|The Cycad Pages
- Encephalartos whitelockii P.J.H. Hurter, "Phytologia 78(6): 410-411, fig. 3" (1995). H—PRE
- "TYPE: Uganda, Mpanga River Falls, 1200 m alt. (leaf and median section of microstrobilus), 27 Oct 1994, P.J.H. Hurter 94U/3a (holo PRE)."
Honoring Loran Whitelock of Los
Angeles, California, well-known contemporary student and collector of
Described in 1995 by South African horticulturist
Distinguished among the central African species by the stiff dark green
leaves with falcate, well-spaced, dentate leaflets that curve towards the
leaf apex and carry more than 3 teeth on each margin. The teeth on the
lower margin are also well-spaced rather than crowded to the base. The
bluish-green cones with smooth scale apices, the sessile seed cones and the
long-stalked, often pendulous pollen cones are also distinctive.
Distribution and habitat: Uganda
1997 IUCN Red List of Threatened Plants
Plants arborescent; stem 4 m tall, 35-40 cm diam.
Leaves 310-410 cm long, dark green, highly glossy, slightly keeled
(opposing leaflets inserted at 160° on rachis); rachis green, gently
curved, somewhat lax or straight with last third sharply recurved, not spirally
twisted; petiole straight, with 6-12 prickles, spine-free for 13 cm; leaf-base
collar not present; basal leaflets reducing to spines.
Leaflets lanceolate, strongly discolorous, not overlapping, not
lobed, insertion angle horizontal; margins flat; upper margin heavily toothed
(more than 3 teeth); lower margin heavily toothed (more than 3 teeth); median
leaflets 23-30 cm long, 20-28 mm wide.
Pollen cones 1-5, narrowly ovoid, green or yellow, 50 cm long, 9 cm
Seed cones 1-3, ovoid, green or yellow, 45 cm long, 35 cm diam.
Seeds ovoid, 30-35 mm long, 25-30 mm wide, sarcotesta red.