|The Cycad Pages
- Encephalartos hirsutus P.J.H. Hurter, "S. African J. Bot. 62(1): 46-48, fig 1" (1996). H—PRE
- "TYPE: Republic of South Africa, Northern Province, 1000 m alt, frond and male cone, 7 Jun 1994, P.J.H. Hurter 94R/1 (holo PRE)."
Latin hirsutus, hairy, from the persistent tomentum.
Described in 1996 by South African horticulturist
P.J.H. Hurter. A recently
recognised member af a group of blue-leaved Transvaal cycads (see also
E. dolomiticus, E. eugene-maraisii, E. dyerianus and
Distinguished within a group of blue-leaved Transvaal species by the
straight leaves with straight tips, the upwardly overlapping (incubous)
median leaflets that are distinctly decurrent, short and entire, the lower
1-2 pairs of leaflets reducing in size but not becoming divided, a clear
petiole up to 13 cm long, and glaucous bluish green cones with no
persistent tomentum. This group of species is distinguished from the blue
leaved species of the Cape Province (E. lehmannii and allies) by the
almost concolorous leaves with stomata on both surfaces.
Distribution and habitat:
1997 IUCN Red List of Threatened Plants
Plants arborescent; stem 4 m tall, 35-40 cm diam.
Leaves 110-140 cm long, blue or silver, dull, strongly keeled
(opposing leaflets inserted at 40-70° on rachis); rachis blue, straight,
stiff, not spirally twisted; petiole straight, with no prickles, spine-free for
13 cm; basal leaflets not reducing to spines, or reducing to spines.
Leaflets lanceolate, concolorous, overlapping upwards, not lobed,
insertion angle obtuse (45-80°) or acute (less than 45°); margins
flat; upper margin entire (no teeth); lower margin entire (no teeth); median
leaflets 13-17 cm long, 10-24 mm wide.
Pollen cones 2-5, narrowly ovoid, bluish-green, 50 cm long, 9 cm
Seed cones 1-3, ovoid, blue-green, 40 cm long, 35 cm diam. Smooth.
Seeds oblong, 30-35 mm long, 15-18 mm wide, sarcotesta red.