Photo Dennis Stevenson
logo
The Cycad Pages
Zamia amazonum

Zamia amazonum D.W. Stev., "Fl. Colombia 21: 33, fig. 3" (2001).
"TYPE: BRAZIL. Amazonas. Confluence of Rio Tauri and Rio Icana, D. Stevenson 886 (holo INPA; iso COL, MO, NY, U)."


Etymology: The specific epithet refers to the wide distribution of this species throughout the upper Amazon basin.

Historical notes:

Distinguishing features: Rachis densely tomentose when young, rachis densely prickled with the prickles often branched, small less than 15 cm long seed cone.

Distribution and habitat: A widespread species found in Amazonian areas of Brazil, Colombia, Peru, and Venezuela.

Conservation status: Fairly common locally throughout its range. Not listed in the IUCN Red List of Threatened Plants.

Description:

Stem subterranean, 3-8 cm in diameter.

Cataphylls triangualr basally, linear-lanceolate apically, 3-8 cm long, 1-2 cm wide.

Leaves 2-6, 0.5-2.5 m long, oval to elliptic; petiole 0.5-1 m long, armed with small to stout branched prickles; rachis 0.5-1 m long, with 6-12 subopposite pairs of leaflets, armed with prickles in the lower third.

Leaflets chartaceous to papyraceous, oblong-lanceolate to lanceolate, acuminate at apex, denticulate in upper half, 15-20 cm long, 2-4 cm wide.

Pollen cones 2-6, cylindrical, brown, 6-10 cm long, 1-2 cm in diameter; peduncle 8-15 cm long.

Seed cones usually solitary, dark red-brown, 10-15 cm long, 3-5 cm in diameter; peduncle 5-8 cm long. Seeds with a red outer fleshy layer, ovoid, 1 cm long, 0.5 cm in diameter.


The Cycad Pages

© 1998-2012 Royal Botanic Gardens Sy dney
Written and maintained by Ken Hill 1998-2010
Maintained by Leonie Stanberg and Dennis Stevenson 2010-2012
This site is currently not being maintained