|Photo Ken Hill
|The Cycad Pages
- Ceratozamia robusta Miq., Tijdschr. Wis-Natuurk. Wetensch. Eerste Kl. Kon. Ned. Inst. Wetensch. 1: 42-43 (1847).
- "TYPE: Mexico, Chiapas, NW of Tuxtla Gutierrez, 9 Jul 1983, Stevenson 549A (neo NY, iso ?)."[NY]
Latin, robusta, large.
Named in 1847 by Dutch botanist
from plants of uncertain
origin cultivated in European collections. All type material was
apparently lost, and a new type based on material collected in
Chiapas was designated in 1986.
Large plants with long leaves and thick wide leaflets.
Distribution and habitat:
Widely distributed, in Belize, Guatemala and Mexico, Oaxaca (?Chiapas) and
Veracruz states. An understorey plant in evergreen wet tropical forests.
1997 IUCN Red List of Threatened Plants category R.
|Photo Ken Hill
Plants arborescent; stem 200 cm long, stem 30 cm diam.
Leaves 8-30 in crown. New growth emerging bronze, red or chocolate
brown, or mid-green. Leaves dark green, semiglossy, 150-300 cm long, flat (not
keeled) in section, with 100-200 leaflets; vernation straight; rachis not or
slightly spirally twisted; petiole 20-60 cm long, armed with prickles.
Leaflets not clustered, lanceolate, symmetric, broadest below middle,
falcate, concolorous, thick or leathery; margins recurved; median leaflets 20-30
cm long, 20-50 mm wide.
Pollen cones brown, ovoid-cylindrical or narrowly ovoid-cylindrical,
30-50 cm long, 10-14 cm diam.; peduncle 10 cm long.
Seed cones grey, ovoid-cylindrical, 30-50 cm long, 10-14 cm diam.;
peduncle 15 cm long.
Seeds ovoid, 25 mm long, 20 mm wide; sarcotesta white, aging to brown.