Hymenophyllum spp.
Family: Hymenophyllaceae
Project: Southwest Biodiversity Consortium
Plants epiphytic or on rock. Stems long-creeping, intertwining, threadlike; hairs brown, sparse. Roots few, delicate. Leaves 1--3-pinnatifid, 2--6 × 0.5--1.5 cm. Petiole short, threadlike, not winged. Blade with inconspicuous glandular hairs or prominent stellate hairs; margins entire to distantly dentate. Soral involucres 2-valved, the halves roundish to ovate. Sporangial receptacle a low mound of tissue included within involucre. Gametophytes persistent, ribbonlike, much branched. Gametophyte gemmae platelike or absent. Most species of Hymenophllyum occur in middle elevation rainforests; a few occur in continuously moist temperate habitats. Although all members of this genus are relatively small and delicate, leaves of many species outside the flora become considerably longer by indeterminate growth of the leaf apices.

Species
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Hymenophyllum dot map
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Hymenophyllum dot map
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Image of Hymenophyllum sieberi
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