|Photo Ken Hill
|The Cycad Pages
- Ceratozamia latifolia Miq., Tijdschr. Wis-Natuurk. Wetensch. Eerste Kl. Kon. Ned. Inst. Wetensch. 1: 206 (1848).
- "TYPE: Mexico, San Luis Potosi, W of Antiguo Morelos, 20 July 1983, Stevenson 565E (neo NY, iso MEXU, NY, fide Stevenson & Sabato 1986)"[NY]
Latin latus, wide, folium, leaf. Although technically referring
to leaves, this name is actually from the distinctively broad leaflets.
Named in 1848 by Dutch botanist
All type material was apparently lost, and a new type based on material
collected in San Luis Potosi was designated in 1986 .
Plants of small stature with broad thin leaflets even arranged along the rachis
Distribution and habitat:
Restricted to oak forests in the cloud zone of the Sierra Madre Oriental,
in San Luis Potosi, Queretaro and Hidalgo states, Mexico.
1997 IUCN Red List of Threatened Plants category V.
|Photo Ken Hill
Plants arborescent; stem 10-20 cm long, stem 10 cm diam.
Leaves 2-4 in crown. New growth emerging bronze, red or chocolate
brown. Leaves light or bright green, semiglossy, 50-100 cm long, flat (not
keeled) in section, with 30-80 leaflets; vernation straight; rachis not or
slightly spirally twisted; petiole 15-20 cm long, unarmed.
Leaflets not clustered, lanceolate, asymmetric, broadest above middle,
not falcate, weakly discolorous, thick or leathery; margins flat; median
leaflets 15-24 cm long, 20-40 mm wide.
Pollen cones yellow-green, fusiform-cylindrical, 15-17 cm long, 2-2.5
cm diam.; peduncle 5 cm long.
Seed cones yellow-green, ovoid-cylindrical, 5-6 cm long, 4-4.5 cm
Seeds ovoid, 18-19 mm long, 14 mm wide; sarcotesta white, aging to