The following species are not described here. Interested readers are referred to the excellent descriptions provided by

Z. amblyphyllidia, Z. amplifolia, Z. angustifolia, Z. angustissima, Z. boliviana, Z. chigua, Z. cremnophila, Z. cunaria, Z. dressleri, Z. fischeri, Z. herrerae, Z. ipetiensis, Z. kickxii, Z. lawsoniana, Z. lindleyi, Z. lucayana, Z. manicata, Z. montana, Z. monticola, Z. muricata, Z. neurophyllidia, Z. obidensis, Z. ottonis, Z. paucijuga, Z. picta, Z. portoricensis, Z. pseudomonticola, Z. pumila, Z. skinneri, Z. soconuscensis, Z. spartea, Z. splendens, Z. standleyi, Z. sylvatica, Z. tuerckheimii, Z. vasquezii, Z. wallisii.

map
Zamia range map (1).

Zamia Linnaeus 1762

Common Names

Maw'-ti-ree-na (Kubuyari); koo (Karapaná and Tanimuka) (all are tribes of northwest Amazonia) (3).

Taxonomic notes

The taxonomy of the genus is in a state of flux and "a significant monograph on Neotropical cycads will appear in Flora Neotropica in the near future." The genus consists of about 55 to 60 species, including about 12 undescribed species (1). Fifty-four are listed here.

Description

"Stems often branched, subterranean to aboveground. Leaves broadly oblong-elliptic; leaflets entire to coarsely dentate, without midribs, venation dichotomous but appearing parallel. Cones distinctly peduncled. Pollen cones more slender than seed cones. x = 8" (2).

Range

Neotropical: USA:Florida, Puerto Rico; Mexico; Central America; South America to Bolivia (1).

Big Tree

Oldest

Dendrochronology

Ethnobotany

Pharmacological studies have found glycosides of methylazoxymethanol, macrozamine and cycasine. Some species are used in Brazil as an antidote to snakebite (3).

Observations

Remarks

First known from 3 species described in lower Eocene deposits in Louisiana, Mississippi and Tennessee (1).

Derivation of the name Zamia is "equivocal, perhaps from misreading of Latin azania, a kind of pine cone, or from Latin zamia, loss, from the "sterile appearance" of the pollen cones" (2).

Citations

(1) Jones 1993.
(2) Garrie P. Landry in the Flora of North America online.
(3) Schultes & Raffauf 1990.

See also:

Calaway H. Dodson. 1998. A new species of Zamia (Zamiaceae) from Ecuador. Novon 8: 12-14.

W.H. Duncan. 1979. Zamia (Cycadaceae) new for Georgia. Sida 8:115-116.

J.E. Eckenwalder. 1980a. Dispersal of the West Indian cycad Zamia pumila L. Biotropica 12:79-80.

J.E. Eckenwalder. 1980b. Taxonomy of the West Indian cycads. Journal of the Arnold Arboretum 61:701-722.

J.W. Hardin. 1971. Studies of the southeastern United States flora. II. The gymnosperms. Journal of the Elisha Mitchell Science Society 87:43-50.

G.P. Landry. 1980. The ecology and variation of Zamia pumila L. in Florida. M.S. thesis. Louisiana State University.

Stevenson 1987.

D.W. Stevenson. 1993. The Zamiaceae in Panama with comments on phytogeography and species relationships. Brittonia 45: 1-16.
ABSTRACT: A key to, and descriptions of, the eleven species of Zamia in Panama are presented. Four of these are new species: Z. cunaria, Z. dressleri, Z. ipetiensis, and Z. neurophyllidia. Floristically, Zamia is represented in Panama by three elements: three Central American species, Z. acuminata, Z. fairchildiana, and Z. skinneri, which reach their southern limits in central Panama; three northern South American species, Z. chigua, Z. manicata, and Z. obliqua, which reach their northern limits in Panama; and five endemic Panamanian species, Z. cunaria, Z. dressleri, Z. ipetiensis, Z. neurophyllidia, and Z. pseudoparasitica. These distributions are intepreted by a consideration of sister group relationships based upon derived morphological character states.

Ward, D.B., ed. N.d. Rare and Endangered Biota of Florida. Vol. 5. Plants. Gainesville. Pp. 122-124.

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This page is from the Gymnosperm Database
URL: http://www.geocities.com/~earlecj/za/za/index.htm
Edited by Christopher J. Earle
E-mail:earlecj@earthlink.com
Last modified on 18-Dec-1999

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