Asplenium stenopteron Peter

Aspleniaceae, Henk Beentje. Flora of Tropical East Africa. 2008

Type

Type: Tanzania, Kilimanjaro, Marangu to Bismarck Hut, Peter 598 (B!, holo.)

Morphology General Habit

Terrestrial.

Vegetative Multiplication Rhizomes

Rhizome erect, short with rather dense dark red-brown narrowly triangular attenuate scales to 4.5 × 0.7 mm.

Morphology Leaves

Fronds suberect, herbaceous, lanceolate, 19 × 4 cm, not proliferous on the single fertile frond seen.

Morphology Leaves Stipes

Stipe green, 5.5 cm long, with hair-shaped scales to 3 mm long, with an occasional lobe.

Morphology Leaves Leaf lamina

Lamina to 13 cm long, 1-pinnate, pinnae in 10–11 pairs, alternate, lanceolate, the median largest and to 2.1 × 0.5 cm, the basal reduced, the apical gradually decrescent, the terminal pinna in line with the rachis, a lobed unit 2.7 × 0.8 mm, basiscopic base cuneate and almost dimidiate, acroscopic base at more of an angle, margin whitish, slightly thickened, crenate-serrate, apex narrowly obtuse; glabrous or with few minute scales.

Morphology Leaves Rachis

Rachis narrowly winged, with few scales as on stipe.

Morphology Reproductive morphology Sori

Sori 1(–2) per pinna, ovate, 2.5–3 mm long.

Morphology Reproductive morphology Sori Indusium

Indusium entire, ± 0.5 mm wide.

Ecology

No data; 1700 m

Conservation

Possibly extinct; this is a well-collected area. A specific search is needed for the ‘Ex’ category.

Note

A taxon quite on its own, does not key anywhere close.

Distribution

Range: Only known from the type Flora districts: T2