 |
| Photo Ken Hill
|
 |
| The Cycad Pages
| | Encephalartos latifrons
| |
- Encephalartos latifrons Lehm., Tijdschr. Natuurl. Gesch. Physiol. 4: 424, t. 9 (1837). L - t. 9
- TYPE: the illustration: t. 9 OR hort Hamburg.
Etymology:
Latin latus, broad and frons, a fern frond or leaf. A
misnomer since it is the leaflets that are broad and not the leaves.
Literature:
Illustrations:
Vernacular:
Historical notes:
Described in 1838 by German botanist
J.G.C. Lehmann.
Distinguishing features:
Distinguished by the mid to deep green glossy leaves with broad, closely
crowded, overlapping leaflets with lobes on the lower margins only. It is
most similar to E. arenarius, which has shorter stems and dull,
slightly silver or grey leaves. Median leaflets of E. latifrons are
and twisted out of the leaf plane, but separate and untwisted in E.
arenarius.
Distribution and habitat:
Eastern Cape Province, South Africa, in dense shrubland on rocky ridges and
slopes.
Conservation:
1997 IUCN Red List of Threatened Plants
category E.
 |
| Photo Ken Hill
|
 |
| Photo Ken Hill
|
Description:
Plants arborescent; stem 3 m tall, 30-35 cm diam.
Leaves 100-150 cm long, yellow green to light or bright green, highly
glossy, moderately keeled (opposing leaflets inserted at 90-120° on
rachis); rachis yellowish, straight with last third sharply recurved, not
spirally twisted; petiole straight, with no prickles; leaf-base collar not
present; basal leaflets not reducing to spines.
Leaflets ovate, strongly discolorous, overlapping upwards, with 2-3
lobes on most leaflets, insertion angle obtuse (45-80°); margins flat;
upper margin entire (no teeth); lower margin entire (no teeth); median leaflets
10-15 cm long, 40-60 mm wide.
Pollen cones 1-3, ovoid, green, 30-50 cm long, 8-17 cm diam.
Seed cones 1-3, ovoid, green, 50-60 cm long, 25 cm diam.
Seeds oblong, 25-33 mm long, 16-18 mm wide, sarcotesta red.