Odontosoria (C.Presl) Fée

Genus

Pteridophytes > Polypodiales > Lindsaeaceae

Characteristics

Plants terrestrial or on rock, not forming colonies. Stems creeping on substrate surface, mostly short; hairs brown, jointed (grading into long, narrow scales with uniseriate tip), not clathrate. Leaves closely spaced to quite distant, erect to arching, narrowly oblong [triangular, ovate, to irregularly shaped], 10--50 cm [to 6 m]. Petiole glabrous or with a few basal scales, stem buds absent, vascular bundles 1. Blade 3--4-pinnate [2--5-pinnate, sometimes scandent or climbing], ± glabrous [some species with spines on petiole, midrib, or costae]; rachises without prickles; nectaries absent. Segments nearly dichotomously divided; ultimate segments linear to cuneate, margins entire or bifid. Veins free, simple or forked. Sori terminal near blade margin on single vein or on commissure joining 2--8 veins, ± spheric to transversely elongate, indusia attached at base and sides, opening toward margin. Spores tetrahedral to nearly globose, or oblong, trilete or monolete, smooth or granulate. x = 38, 47.
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Plants terrestrial. Rhizomes shortly creeping, protostelic or solenostelic, covered with dark brown hairs or subulate scales. Fronds approximate; stipe stramineous or dark stramineous, shallowly sulcate adaxially, glabrous; lamina 3-or 4-pinnate, pinnatifid and gradually narrowed toward apex; ultimate pinnules or segments usually cuneate or linear; veins free, simple or once or twice forked on ultimate pinnules, papery to slightly leathery. Sori usually submarginal, ovate, terminal on a single vein, or on 2 or 3 veins; annulus consisting of 12-24 thickened cells; indusia ovate or cup-shaped, basally and partially or entirely adnate laterally. Spores ellipsoid and monolete, or globose and trilete.
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Hardiness (USDA) 7-12

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