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The Cycad Pages
Encephalartos concinnus

Encephalartos concinnus R.A. Dyer & I. Verd., Kirkia 7: 147-158 (1969). H—PRE
"TYPE: Rhodesia, Belingwe District, few miles S of Belingwe, Smit PRE 30142 (holo PRE)."


Photo Ken Hill

Etymology: latin concinnus, neat or trim, from the compact and attractive habit.

Literature:

Illustrations:

Vernacular:

Historical notes: Described in 1969 by South African botanists R. Allen Dyer and Inez Verdoon, who separated the previously broadly defined E. manikensis into a number of segregates, primarily on differences in pollen cone morphology (see also E. munchii, E. pterogonus and E. chimanimaniensis).

Distinguishing features: A member of the E. manikensis complex, a group of robust cycads from the region of the Zimbabwe-Mozambique border with stout erect trunks of medium height, leaves with short petioles and numerous reduced spine-like leaflets, median leaflets with 1-6 spines on each margin, green cones and red seed-coats.

Distribution and habitat: Scattered and sporadic, in small populations in southern Zimbabwe, in woodland or grassland on cliffs and rocky hills.

Conservation: 1997 IUCN Red List of Threatened Plants category E.

Description:

Plants arborescent; stem 3 m tall, 45 cm diam.

Leaves 150-200 cm long, light or bright green, semiglossy, flat (not keeled) in section (opposing leaflets inserted at 180° on rachis); straight, stiff, not spirally twisted; petiole straight, with 1-6 prickles; leaf-base collar not present; basal leaflets reducing to spines.

Leaflets lanceolate, weakly discolorous, not overlapping, not lobed, insertion angle obtuse (45-80°); margins flat; upper margin lightly toothed (1-3 teeth); lower margin lightly toothed (1-3 teeth); median leaflets 10-15 cm long, 20-25 mm wide.

Pollen cones 1-4, fusiform, green, 30-50 cm long, 7-10 cm diam.

Seed cones 1-2, ovoid, green, 35-45 cm long, 15-20 cm diam.

Seeds oblong, 30-35 mm long, 18-23 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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