Haplopteris C.Presl

Genus

Pteridophytes > Polypodiales > Pteridaceae > Vittarioideae

Characteristics

Rhizome creeping, densely covered with roots and scales; roots densely hairy; scales narrow, clathrate with a hair-like apex. Fronds scattered to crowded. Stipe narrowly winged. Lamina narrowly to broadly linear to narrowly elliptic or oblanceolate, erect, arcuate or pendulous, coriaceous; venation indistinct, consisting of a midvein and simple or forked, oblique lateral veins which unite with a continuous submarginal vein. Sori linear along the submarginal vein, immersed in grooves; paraphyses numerous, unbranched or branched; terminal cell often clavate. [See also Du Puy (1993: 542–543), Green (1994: 566) for description of Vittaria; from the Latin vitta (a ribbon), referring to the narrow, ribbon-like fronds of these ferns.] [Haplopteris description pending. The above description is for the genus Vittaria by Jones (1998) in the Flora of Australia Volume 48; the genus has since been revised and split into three genera (see Crane 1997) with the two species occurring in Australia (per Jones 1998) now placed in Haplopteris-Editor, 24 June 2022.]
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Epiphytic or epilithic grasslike plants. Fronds simple, linear, entire, glabrous. Venation consisting of a costa and oblique unbranched veins, free except for a submarginal fertile connecting vein. Sori in one elongate marginal or submarginal groove on each side of lamina, immersed, rarely superficial; paraphyses long with a dark obconic head. Spores monolete, most ellipsoid, sometimes fusiform, smooth, transparent.
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Commonly grow in damp, shaded habitats.
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Hardiness (USDA) 8-12

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