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Electronic Flora of South Australia genus Fact Sheet

Family: Compositae
Isoetopsis

Citation: Turcz., Bull. Soc. Nat. Mosc. 24:174, t. 3 (1851).

Derivation: Generic name Isoetes and the Greek -opsis, appearance; as the habit resembles that of Isoetes.

Synonymy: Not Applicable

Common name: None

Description:
Tufted stemless annual herb; leaves basal, linear, erect.

Capitula sessile, axillary, crowded at the base of the plant, discoid, heterogamous; involucres ovoid; bracts at first herbaceous, becoming scarious, imbricate in 2 subequal series; receptacle flat, naked, pitted; outer florets female, 3- or 4-seriate, tubular; corollas conical with 3 or 4 minute acuminate lobes at the narrowed apex; style branches linear with subulate glabrous terminal appendages.

Achenes obconic, villous with shortly 2-fid hairs; pappus of large free scales; inner florets few, bisexual, sterile, tubular, 3- or 4-merous; corollas narrow below, abruptly campanulate; anthers obtuse at the base with prominent subulate apical appendages; style almost entire, papillose; achenes abortive, linear, glabrous; pappus absent.

Biology: No text

Taxonomic notes: Monotypic. (H. Robinson & R. D. Brettell (1973) Phytologia 26:73-75:)

Author: Not yet available


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