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

Yesilyurt, Jovita C. & Schneider, Harald, 2010, The new fern genus Calciphilopteris (Pteridaceae), Phytotaxa 7, pp. 52-59 : 55

1. Calciphilopteris alleniae (R.M.Tryon) Yesilyurt & H.Schneider , comb. nov.

Basionym:— Doryopteris alleniae Tryon (1962: 91 , fig 1–4), as ‘ allenae ’. Holotype: MALAYSIA: Perak: Gunong Idong , near Perak, 24 May 1962, B.M. Allen 4763 (GH). Paratypes: 12 January 1959, B.M. Allen 4103 ( GH, US), 13 August 1959, B.M. Allen 4343 ( GH) .

Rhizome predominantly short-creeping, scales 3 mm, ferrugineous, lanceolate to linear-lanceolate, caudate, margin dentate. Petiole terete, black, indument of fibrils, particularly dense towards the base of the lamina. Sterile and fertile fronds coriaceous; glabrescent, indument on the abaxial side with glandular hairs and/or fibrils, veins usually joined at the vein-ends (at the margin of the lamina). Sterile fronds up to 20 cm long; lamina up to 10 cm, simple, entire to 3-lobed, ovate to oblong-ovate, hydathodes absent. Fertile fronds up to 35 cm; lamina up to 15 cm; suborbicular, obovate to 3-lobed (rarely pedate); pinnae/segments conspicuously ascendant, long linear-lanceolate. Indusium with margin entire to more or less irregular. Sporangium with pedicel 1–1½ × the capsule length; annulus with up to 34 indurated cells. Spores light castaneous to dark castaneous, echinate.

Distribution:—known only from a few localities on the Malay Peninsula (Perak: Gunong Idong, Gunong Temurong and Selangor: Gua Batu).

Note:—there is an orthographic error in Doryopteris allenae which is regulated in the ICBN by Article 60.11, recommendation 60C.1 and it is here therefore, corrected (it should be Calciphilopteris alleniae instead of C. allenae ).

Selected specimens:— MALAYSIA: Ding Hou 709 (L); Molesworth-Allen 4103 (GH), 4393 (GH), 4763 (GH, US).