Isoetes - Isoetaceae

Isoetes nigroreticulata Verdc.

 

 

 

 

Synonyms

Isoetes tenuifolia sensu Faden, non Jermy

Common name

Description

Annual (fide Faden), almost completely submerged or on mud. Corm 2–3-lobed; leaves densely tufted, 3–16 cm long, 0.7–8 mm wide at middle; ligule narrowly triangular, 2 mm long. Velum complete, shiny black and reticulate, the adjacent leaf margin pale and thin, 1–2 mm wide above, narrower in sporangial area. Megaspores with rather scattered tubercles on large face, 3 smaller faces with small low indistinct tubercles or almost smooth.

Notes

Derivation

Habitat

Seasonal and long lasting pools and marshes with grasses and sedges, c. 1520 m.

Distribution worldwide

See African distribution.

Distribution in Africa

Kenya.

Growth form

Terrestrial.

Literature

  • 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 10.
  • Verdcourt, B. (2005) Isoetaceae. Flora of Tropical East Africa, Page 2.
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