Marsilea - Marsileaceae

Marsilea megalomanica Launert

 

 

 

 

Synonyms

Common name

Description

Rhizome filiform with internodes up to 1.5 cm long; nodes densely hairy at first. Stipes graceful, slightly curved, up to 20 cm long, marked with parallel grooves, sparsely set with long hairs or almost hairless, smooth, bearing the sporocarps towards the apex. Leaflets broadly triangular or triangular-obovate in outline, 1.2–2.3 cm long, 0.9–1.4 cm wide, wedge-shaped at the base, usually erose-crenate at the margin, softly grey-hairy when young, later with scattered hairs or hairless. Pedicels slender, flexuous, 1–2 cm long, sparsely set with long hairs when young. Sporocarps pedicellate, arranged in 2 rows on either side of the axis, subrectangular or obliquely semi-elliptic, 4–6 mm long, 3–3.8(–4) mm wide, laterally moderately compressed, covered with dense adpressed hairs; lateral veins 11–12, distinct up to the ventral margin; upper tooth shortly conical, obtuse or subacute; lower tooth almost obsolete. Sori 7–10.

Notes

Derivation

Habitat

Dry waterholes in thicket, growing in sandy soil, 300-450m.

Distribution worldwide

See African distribution.

Distribution in Africa

Kenya.

Growth form

Terrestrial.

Literature

  • Launert, E. (2003) Marsileaceae. Flora of Tropical East Africa, Page 15. (Includes a picture).
  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 56.
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