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Useful Tropical Plants

Cycas rumphii

Miq.

Cycadaceae


There has been considerable confusion in the past between this species and Cycas circinalis L. A recent treatment ('The Genus Cycas (Cycadaceae) in Indonesia' Lindstrom A.J. Et al, Telopea 12(3) 385 - 418 2009[
718
Title
The genus Cycas (Cycadaceae) in Indonesia.
Publication
 
Author
Lindstrom A.J.; Hill K.D.; Stanberg L.C.
Website
http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0011/101441/Tel123385Lin.pdf
Publisher
Telopea
Year
2009
ISBN
 
Description
A treatment of the genus Cycas in Indonesia, sorting out the correct names for the various species.
]) has proposed that Cycas circinalis is restricted to southwest India, whilst Cycas rumphii is a found in Indonesia and New Guinea. This treatment seems to have been accepted. Much of the old literature on the uses of these species is in the name of Cycas circinalis, and it can be impossible to tell which species is actually being referred to if the plants range is not given. However, it is quite likely that the two species have virtually identical uses[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

+ Synonyms

Cycas celebica Miq.

Cycas corsoniana G.Don

Cycas speciosa D.Don

Zamia corsoniana G.Don

Common Name: Sago Palm

Cycas rumphii
Plant with a small crop of fruit at Botanical garden Berlin-Dahlem, Germany
Photograph by: Osmodi
Creative Commons Attribution-Share Alike 3.0-2.5-2.0-1.0
Cycas rumphii Cycas rumphii Cycas rumphii Cycas rumphii Cycas rumphii Cycas rumphii

General Information

Cycas rumphii is a slow-growing, evergreen, palm-like plant with an erect, sometimes branched, main stem that can eventually be up to 10 metres tall and 11 - 35cm in diameter; this is topped by a spreading crown of numerous large leaves each around 1.5 - 2.5 metres long[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].
The plant has a range of traditional uses, especially as a food and a medicine. It is sometimes sold in local markets. The pith in the stem is often harvested from the wild and used as a food source in its native range, though recent research has shown that this is a potentially dangerous practice since the pith can cause chronic nervous disorders if it is not treated properly. Overall its use is not to be recommended, especially since it is becoming rare in the wild[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. The plant is also grown as an ornamental.
Occurs over a wide range in coastal areas, but this species has declined due to a habitat loss of 20% in the last 50 years. The plant is classified as 'Near Threatened' in the IUCN Red List of Threatened Species(2011)[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].

Known Hazards

The plants contain alkaloids of carcinogens and also an amino-acid that causes chronic nervous disorders[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Regular consumption of the plant leads to severe health problems and death. This toxic principle can be removed if the food is properly prepared but consumption of the plant still cannot be recommended because its use often means the death of the plant and it is becoming rare in the wild.

Botanical References

200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
990
Title
The Cycad Pages
Publication
 
Author
 
Website
http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/wlist.html
Publisher
Royal Botanic Gardens, Sydney.
Year
2012
ISBN
 
Description
A website dedicated to the various species of Cycad, with a comprehensive description of all the known species (as of 2012). At present (2015), the site is still running but is no longer being updated
,
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.

Range

Southeast Asia - Indonesia, New Guinea.

Habitat

Coastal and near coastal communities in littoral forest and rainforest; at elevations up to 200 metres. Often on stabilized dunes composed of coral sands and coral limestone[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
,
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].

Properties

Conservation StatusNear Threatened
Edibility Rating *  *
Medicinal Rating *  *
HabitEvergreen Shrub
Height3.50 m
Growth RateSlow
PollinatorsInsects, wind
Self-fertileNo
Cultivation StatusOrnamental, Wild

Cultivation Details

Succeeds in the hot tropics and subtropics[
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
]. Plants are tolerant of light frost[
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
]. Although Cycads mainly prefer a summer rainfall climate with cool, dry winters, most of them will adapt easily to a Mediterranean climate with its dry summers and moist winters[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].
Prefers a sunny position, but also succeeds in light shade[
188
Title
The RHS Gardener's Encyclopedia of Plants and Flowers
Publication
 
Author
Brickell. C.
Publisher
Dorling Kindersley Publishers Ltd.
Year
1990
ISBN
0-86318-386-7
Description
Excellent range of photographs, some cultivation details but very little information on plant uses.
,
302
Title
Tropical Ornamentals; A Guide
Publication
 
Author
Whistler. W. Arthur.
Publisher
Timber Press Inc. Oregon.
Year
2000
ISBN
0-88192-448-2
Description
An excellent little guide to some of the more commonly cultivated ornamental plants of the Tropics, often giving some information on the plants other uses.
]. Requires a strong loam with sharp sand and good drainage[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
]. Succeeds in dry soils. Succeeds in poor soils[
302
Title
Tropical Ornamentals; A Guide
Publication
 
Author
Whistler. W. Arthur.
Publisher
Timber Press Inc. Oregon.
Year
2000
ISBN
0-88192-448-2
Description
An excellent little guide to some of the more commonly cultivated ornamental plants of the Tropics, often giving some information on the plants other uses.
].
The seeds float and can be transported long distances in the sea, thus accounting for the very large distribution of this species[
314
Title
Palm and Cycad Societies of Australia.
Publication
 
Author
 
Website
http://www.pacsoa.org.au/
Publisher
 
Year
0
ISBN
 
Description
Contains at least a little information on the majority of palm and cycad species, plus a wealth of photographs. A first class website.
].
Plants are slow-growing[
188
Title
The RHS Gardener's Encyclopedia of Plants and Flowers
Publication
 
Author
Brickell. C.
Publisher
Dorling Kindersley Publishers Ltd.
Year
1990
ISBN
0-86318-386-7
Description
Excellent range of photographs, some cultivation details but very little information on plant uses.
].
Species in this genus can usually be transplanted easily even when quite large. The best time for moving them is just before the beginning of a new growing season, the roots being trimmed if they are damaged and perhaps some leaves being removed. New roots should develop quickly as the season progresses[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].
Species in this genus form structures known as coralloid roots. These roots branch off from the taproot or secondary roots and are distinctive in that they grow laterally or upward, forming a nodular mass at the apex. These coralloid roots occur slightly below or slightly above the soil surface and generally contain cyanobacteria, also known as blue-green algae. These are able to fix atmospheric nitrogen and make it available as a nutrient to the plant. The ability to extract this important nutrient from the air explains how many cycad species are able to survive on almost sterile soils[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].
A dioecious species, with individual plants producing either all male or all female cones. Therefore both male and female forms of the plant need to be grown if seed is required[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
]. On very rare occasions, usually when a plant has been under severe stress, it can change sex and produce either all female or all male cones[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].

Edible Uses

Species in this genus are generally toxic unless the food is prepared correctly. See notes above on toxicity.

The pith is rich in carbohydrate and a sago can be made from it[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
46
Title
Dictionary of Economic Plants.
Publication
 
Author
Uphof. J. C. Th.
Publisher
Weinheim
Year
1959
ISBN
-
Description
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
,
61
Title
A Dictionary of Plants Used by Man.
Publication
 
Author
Usher. G.
Publisher
Constable
Year
1974
ISBN
0094579202
Description
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
,
177
Title
Plants for Human Consumption.
Publication
 
Author
Kunkel. G.
Publisher
Koeltz Scientific Books
Year
1984
ISBN
3874292169
Description
An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
]. A common food in parts of its range[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].
To be suitable for the extraction of sago, the plant should not have fruited, as fruiting depletes the store of starch in the stem. Most Cycas plants are capable of yielding large amounts of starch at around 7 years of age. The best time for the extraction of starch is just before a flush of new leaves[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].

The raw seed is poisonous, but after being cut into thin slices, dried, then steeped in water for a few minutes and dried again, it becomes edible[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
61
Title
A Dictionary of Plants Used by Man.
Publication
 
Author
Usher. G.
Publisher
Constable
Year
1974
ISBN
0094579202
Description
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
,
63
Title
Nuts.
Publication
 
Author
Howes. F. N.
Publisher
Faber
Year
1948
ISBN
-
Description
Rather old but still a masterpiece. Has sections on tropical and temperate plants with edible nuts plus a section on nut plants in Britain. Very readable.
,
146
Title
A Manual of Indian Timbers.
Publication
 
Author
Gamble. J. S.
Publisher
Bishen Singh Mahendra Pal Singh
Year
1972
ISBN
-
Description
First written in the 19th century, but still a classic, giving a lot of information on the uses and habitats of Indian trees. Not for the casual reader.
,
177
Title
Plants for Human Consumption.
Publication
 
Author
Kunkel. G.
Publisher
Koeltz Scientific Books
Year
1984
ISBN
3874292169
Description
An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
]. The kernel contains around 20 - 30% starch[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
]. It can be used as a sago[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
335
Title
Perennial Edible Fruits of the Tropics : an Inventory
Publication
 
Author
Martin, F. W.; Campbell, C. W.; Rubertbe, R. M.
Publisher
U.S. Dept. of Agriculture, Agricultural Research Service
Year
1987
ISBN
 
Description
A booklet giving terse details of almost 300 species of edible fruits, plus regional lists of Botanical and Common names for over 2,500 less well-known edible fruits of the tropics.
]. Using the seed for food cannot be recommended, however. The flattened-ovoid seeds are around 45 - 58mm long, 35 - 45mm wide[
990
Title
The Cycad Pages
Publication
 
Author
 
Website
http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/wlist.html
Publisher
Royal Botanic Gardens, Sydney.
Year
2012
ISBN
 
Description
A website dedicated to the various species of Cycad, with a comprehensive description of all the known species (as of 2012). At present (2015), the site is still running but is no longer being updated
,
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
]. See the notes above on toxicity.

The very young leaves are edible[
177
Title
Plants for Human Consumption.
Publication
 
Author
Kunkel. G.
Publisher
Koeltz Scientific Books
Year
1984
ISBN
3874292169
Description
An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
]. When around 30 - 40cm long, the young, not yet quite unfolded, succulent leaves are cooked and eaten as a vegetable[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
,
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].

The plant yields a gum[
64
Title
Vegetable Gums and Resins.
Publication
 
Author
Howes. F. N.
Publisher
Faber
Year
 
ISBN
81-88818-17-8
Description
A very good book dealing with the subject in a readable way.
,
146
Title
A Manual of Indian Timbers.
Publication
 
Author
Gamble. J. S.
Publisher
Bishen Singh Mahendra Pal Singh
Year
1972
ISBN
-
Description
First written in the 19th century, but still a classic, giving a lot of information on the uses and habitats of Indian trees. Not for the casual reader.
,
171
Title
Economic Botany.
Publication
 
Author
Hill. A. F.
Publisher
The Maple Press
Year
1952
ISBN
-
Description
Not very comprehensive, but it is quite readable and goes into some detail about the plants it does cover.
]. No further details are given.

Medicinal

The abundant pollen is strongly narcotic[
240
Title
Glossary of Indian Medicinal Plants (Including the Supplement).
Publication
 
Author
Chopra. R. N., Nayar. S. L. and Chopra. I. C.
Publisher
Council of Scientific and Industrial Research, New Delhi.
Year
1986
ISBN
-
Description
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
,
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].
The male cone scales are commonly sold as an anodyne in bazaars in India[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].

The bark and the seeds are ground to a paste with oil and used as a poultice on sores and swellings[
240
Title
Glossary of Indian Medicinal Plants (Including the Supplement).
Publication
 
Author
Chopra. R. N., Nayar. S. L. and Chopra. I. C.
Publisher
Council of Scientific and Industrial Research, New Delhi.
Year
1986
ISBN
-
Description
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
].

The juice of tender leaves is useful in the treatment of flatulence and vomiting[
240
Title
Glossary of Indian Medicinal Plants (Including the Supplement).
Publication
 
Author
Chopra. R. N., Nayar. S. L. and Chopra. I. C.
Publisher
Council of Scientific and Industrial Research, New Delhi.
Year
1986
ISBN
-
Description
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
].

A gum obtained from the plant has been used medicinally, particularly as an agent that is said to produce rapid suppuration when applied to malignant ulcers. The gum also has the repute of being a good antidote for snake and insect bites[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].

Other Uses

The bark sap is used as a glue[
339
Title
Agroforestry in the Pacific Islands: Systems for Sustainability
Publication
 
Author
W.C. Clarke and R.R. Thaman (Editors)
Website
http://www.unu.edu/unupress/unupbooks/80824e/80824E00.htm#Contents
Publisher
United Nations University Press, Tokyo
Year
1993
ISBN
92-808-0824-9
Description
The guide includes information on 100 species of plants for Agroforestry. It is also available on the web at the address given above.
].

A gum exudes through wounds in the plant, especially from the megasporophylls, stems and leaves[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
]. It is used medicinally and as an adhesive[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].
When placed in water, Cycas gum begins to swell almost immediately. By the end of several days, it expands to many times its original size and becomes so colourless and transparent that it cannot be seen in water but must be felt for with a rod[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
]. Cycas gum has been likened in its properties to that of Sterculia setigera[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
]

The fruits are strung together to make children's toys or rattles[
339
Title
Agroforestry in the Pacific Islands: Systems for Sustainability
Publication
 
Author
W.C. Clarke and R.R. Thaman (Editors)
Website
http://www.unu.edu/unupress/unupbooks/80824e/80824E00.htm#Contents
Publisher
United Nations University Press, Tokyo
Year
1993
ISBN
92-808-0824-9
Description
The guide includes information on 100 species of plants for Agroforestry. It is also available on the web at the address given above.
].

The stems are used in small traditional constructions in Indonesia[
1934
Title
Economic Botany of the Cycads
Publication
Econ Bot 12, 3-41 (1958)
Author
Thieret J.W.
Website
https://doi.org/10.1007/BF02863122
Publisher
 
Year
1958
ISBN
 
Description
 
].

Propagation

Seeds - best sown as soon as they are ripe, though the seeds of many species will take a few months to finish maturing the embryo before they are ready to germinate. Sow the seeds in a tray in a freely-draining medium and place in moderate shade. Bottom heat at about 27°c will hasten seed germination dramatically. Young roots are quite brittle and once germination takes place, the root grows rapidly. It is important to pot up the seedlings at this time in order to give them enough root-space. Grow on the plants in pots until large enough to plant out[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].
Division of off-sets or suckers is best carried out just before the plant comes in to new growth at the start of the growing season[
1935
Title
The Cycads
Publication
 
Author
Whitelock L.M.
Publisher
Timber Press; Portland, Oregon
Year
2002
ISBN
0-88192-522-5
Description
An excellent book dealing with the eleven different genera and almost 300 species of plants we know as Cycads. There are detailed descriptions and a host of other information for each species.
].
Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2023-02-09. <tropical.theferns.info/viewtropical.php?id=Cycas+rumphii>

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