Calciphilopteris alleniae (R.M.Tryon) Yesilyurt & H.Schneid.

Family

Pteridaceae, subfamily Cheilanthoideae

Nomenclature

Calciphilopteris alleniae (R.M.Tryon) Yesilyurt & H.Schneid., Phytotaxa 7: 55. 2010. – Doryopteris alleniae R.M.Tryon, Contr. Gray Herb. 191: 91, f.1-4. 1962; Boonkerd et al., Thai For. Bull., Bot. 32: 7. 2004.

Description

Rhizome short creeping; scales narrow, darker in the centre. Fronds slightly dimorphic. Stipes terete with one vascular bundle, c. 13–20 cm long, laminae ovate, apex rounded, base cordate or 3–5 lobed (sterile) or 3–7 lobed (fertile); sterile lamina c. 5.6–7 x 4–5 cm, no hydathodes on upper surface, margin with whitish to brownish, membranaceous border; veins copiously anastomosing, forming areoles which become smaller towards margin; fertile fronds generally shorter with stipes c. 4.2 cm long, laminae c. 5.6 x 3.4 cm.

Distribution in Thailand

PENINSULAR: Yala.

Wider Distribution

Peninsular Malaysia.

Ecology

Ecology.– Lithophytic .

Proposed IUCN Conservation Assessment

Data Deficient (DD). The current distribution and status of this species are uncertain.

1. Sterile plant; 2. Sterile frond; 3. Venation of sterile lamina; 4. Fertile frond.

1. Sterile plant; 2. Sterile frond; 3. Venation of sterile lamina; 4. Fertile frond.

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