Salvinia hastata Desv.
Synonyms |
Salvinia mollis Desv. |
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Common name |
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Description |
Rhizome horizontal, c. 1 mm. in diameter, upper surface with dark-brown multicellular hairs up to 2 mm. long. Leaves: floating leaves opposite, oblong in outline, sometimes slightly broadened towards the base, apex notched, base cordate to almost truncate, flat (or infolded along the midrib when leaves closely spaced), up to 2 x 1.3 cm, upper surface papillate with minute whitish simple multicellular hairs, pilose beneath with brownish multicellular hairs; submerged leaf dissected, up to 6.5 cm. long, lobes densely set with dark-brown multicellular hairs up to 3 mm. long. Sporocarps up to 6, arranged in 2 rows along the midrib of one dissected leaf-lobe, spherical, hairy. |
Notes | Differs from other species by having more oblong leaves with a truncate apex and heartshaped base, the apex of the leaf-papilla does not have an open basket of 4 curved cells. |
Derivation | hastata: spearshaped, not a very good description since the leaves are more heartshaped than spearshaped at the base. |
Habitat | Sluggish streams and backwaters. |
Distribution worldwide | Africa, Madagascar, Mascarene Islands. |
Distribution in Africa |
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Growth form |
Aquatic. |
Literature |
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