Calciphilopteris papuana (Copel.) Yesilyurt & H.Schneider

Yesilyurt, Jovita C. & Schneider, Harald, 2010, The new fern genus Calciphilopteris (Pteridaceae), Phytotaxa 7, pp. 52-59 : 56-57

3. Calciphilopteris papuana (Copel.) Yesilyurt & H.Schneider , comb. nov. — Fig. 1B .

Basionym:— Doryopteris papuana Copeland (1911: 86) . Holotype: PAPUA NEW GUINEA: Goodenough Bay , King 208, (MICH, isotype BO).

Rhizome slender, short- to long-creeping, scales up to 2.5(–3) mm, dark brown, lanceolate, to ovatelanceolate, margin entire. Petiole terete, dark brown to atropurpureous, with fibrils and usually scaly, scales semi- to non-clathrate. Sterile and fertile fronds glabrescent to glabrous, indumentum on the adaxial side with fibrils on the main veins only, abaxial side with fibrils throughout (smaller on the lamina, bigger on the main veins) and non-clathrate to semi-clathrate microscales on the main veins. Sterile fronds up to 28 cm; lamina up to 15 cm, pedate; ovate to pentagonal; pinnae/segments1–3 pairs; hydathodes present (sometimes obscure). Fertile fronds up to 42(–45) cm; lamina up to 27 cm; pentagonal to broadly-cordate or suborbicular, pedatepinnatifid to pedate-bipinnatifid; pinnae/segments in 2–6(–7) pairs; basal pinnae/segment falcate, with 1–2 acroscopic lobes and 2–4 basiscopic segments/lobes, which are ascendant, falcate to lanceolate, first segment/ lobe divided into 1–3 lobes, lobes ascendant, lanceolate; other pinnae/segments conspicuously ascendant, lanceolate to linear-lanceolate. Indusium with margin entire to slightly eroded. Sporangium with pedicel 1(–

1½) × the capsule length; capsule with annulus with 17–25 indurated cells. Spores castaneous to light castaneous, cristate.

Distribution:—endemic to New Guinea, mainly in the eastern part.

Selected specimens:— PAPUA NEW GUINEA: Brass 21853 (BM, GH, L, US); 21623 (GH, L); Carr 12372 (BM, L, NY); Kairo 629 (BM, L); King s.n. (BM, UC, PE); Hartley 10656 (GH, L).

Figures

FIGURE 1. Sketches of fertile leaves showing their general attributes and morphological variation: A. Calciphilopteris ludens. B. Calciphilopteris papuana. C. Calciphilopteris wallichii.