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The Cycad Pages
Encephalartos septentrionalis

Encephalartos septentrionalis Schweinf., Bot. Zeit. Berlin 29: 334 (1871). I—K
"TYPE: Sudan, Gumanga, Schweinfurth 2952 (syn. K); near Nganye, Schweinfurth 3992 (syn. K)."


Etymology: northern

Literature:

Illustrations:

Vernacular:

Historical notes: Described in 1871 by German botanist -- Schweinfurth.

Distinguishing features: yellowish cones; long-stalked seed cones; dentate leaflets with teeth crowded to the base on the lower margin.

Distribution and habitat:

Conservation: Not listed in the 1997 IUCN Red List of Threatened Plants.

Description:

Plants arborescent; stem 2 m tall, 30 cm diam.

Leaves 100-150 cm long, light or bright green, highly glossy, flat (not keeled) in section (opposing leaflets inserted at 180° on rachis); rachis green, straight, stiff or gently curved, somewhat lax, not spirally twisted; petiole straight, with more than 12 prickles; leaf-base collar not present; basal leaflets reducing to spines.

Leaflets lanceolate, strongly discolorous, not overlapping, not lobed, insertion angle horizontal or obtuse (45-80°); margins flat; upper margin heavily toothed (more than 3 teeth); lower margin heavily toothed (more than 3 teeth); median leaflets 7-18 cm long, 15-35 mm wide.

Pollen cones 8-10, narrowly ovoid, green or brown, 20-22 cm long, 6-8 cm diam.

Seed cones ovoid, green or brown, 30-35 cm long, 18-20 cm diam.

Seeds oblong, 23-35 mm long, 16-25 mm wide, sarcotesta red.


The Cycad Pages

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Written and maintained by Ken Hill 1998-2010
Maintained by Leonie Stanberg and Dennis Stevenson 2010-2012
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