Aglaomorpha drynarioides (Hook.) Roos

Family

Polypodiaceae

Nomenclature

Aglaomorpha drynarioides (Hook.) Roos, Blumea 31(1): 153. 1985; Boonkerd et al., Thai For. Bull. (Bot.) 32: 9. 2004; Hovenkamp & Roos, Fl. Males., Ser. II, Ferns and Fern Allies 3: 16. 1998. – Acrostichum drynarioides Hook., Sp. Fil. 5: 284. 1864. – Type: Norris s.n. (K; iso B), Peninsular Malaysia, Penang.

Description

Description from Hovenkamp & Roos, Fl. Males., Ser. II, Ferns and Fern Allies 3: 16. 1998.
Epiphytic, lithophytic or terrestrial. Rhizome 2–3 cm thick or more, densely covered with scales, not glaucous, short creeping, phyllopodia up 10 cm distant, not elevated; dilated frond bases imbricated, rachises not persistent. Anatomy: vascular bundles many, equally sized, arranged in one row with a conspicuous dorsal invagination, without dark bundle sheaths. Rhi­zome scales spreading, pseudopeltate, 10–21(–27) by 0.7–1.5 mm, index 8–20, basal auricles short, apex narrowly acuminate to long-filiform, strongly dentate with re-curved teeth, midrib absent. Fronds internally dimorphic, sessile, the dilated base lobed, sometimes narrowed, upwards pinnatifid, 50–175 by 15–45 cm, index 3–3.5, glabrous to sparsely set with short acicular hairs, apical pinnae present. Sterile pinnae with or without basal constriction, 9–26 by 2–5.5 cm, index 3.5–6.5, margin entire, apex acute to acuminate. Fertile pinnae in upper 2/3 of the frond, strongly narrow­ed, up to 10–45 by 0.3–0.5 cm, completely covered with longitudinal coenosori. Coe­nosorus linear, sometimes interrupted, very shallowly sunken. Sporangia glabrous . Spores with small globules.

Distribution in Thailand

PENINSULAR: Narathiwat.

Wider Distribution

Malesia and the Pacific.

Ecology

Epiphytic, lithophytic or terrestrial in evergreen forest.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is common and widespread in other parts of its range.

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