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Common name: rough maidenhair fern
Adiantum hispidulum Sw. APNI*
Synonyms: Adiantum hispidulum var. glabratum Domin APNI*
Adiantum hispidulum var. normale Domin APNI*
Description: Rhizome short-creeping, covered with dark brown scales; rootlets lacking bulbils.
Fronds 5–70 cm high, palmately or dichotomously divided, ultimate segments symmetric to asymmetric and very shortly stalked; segments 5–13 mm long, tough, pale to dark green; ultimate segments of fronds pubescent or rarely glabrous; stipe black, stout, slightly rough to scabrous; stipe and rachises sparsely hairy.
Sori small, 1–20 per segment, close together along outer and upper margins.
Spores to 32 per sporangium, brown, outline in polar view triangular to convex-triangular; aborted spores usually numerous; perine finely granulate, loosely adhering to exine.
Distribution and occurrence: Widespread in rainforest and open forest, often amongst rocks.
NSW subdivisions: NC, CC, SC, NT, CT, NWS, CWS, LHI
Other Australian states: Qld Vic. N.T.
Text by Peter G. Wilson
Taxon concept: Flora of NSW 1 (1990)
| ||Key to the varieties|| |
|1||Fronds helicoid. Lamina of pinnules especially below with short rigid hairs, less than 0.5 mm long.||var. hispidulum|
|Fronds helicoid or pedate. Lamina of pinnules especially below with soft, flexuose or silky pubescent hairs longer than 0.5 mm. Undersurface of pinnules pale subglaucous||var. hypoglaucum|
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.