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FOC | Family List | FOC Vol. 2-3 | Pteridaceae | Cheilanthes

17. Cheilanthes bhutanica Fraser-Jenkins & Wangdi, Fern Gaz. 18: 220. 2009.

云南旱蕨 yun nan han jue

Pellaea yunnanensis Ching, Acta Phytotax. Sin. 20: 235. 1982, not Cheilanthes yunnanensis Brause (1913).

Rhizomes ascending to erect, sometimes with creeping branches; scales bicolorous, black with narrow, light brown margins, lanceolate to narrowly lanceolate. Fronds clustered or closely spaced. Stipe shiny, dark brown to nearly black, to 19 cm × 1.5-2 mm, terete or slightly flattened adaxially, scaly toward base; scales mostly bicolorous, narrowly lanceolate, glabrous above. Lamina brownish green when dry, ovate-pentagonal, 9-12 × ca. 9 cm, 2-pinnate-pinnatifid, papery, glabrous on both surfaces, apex acute to shortly acuminate; rachis grooved adaxially, glabrous. Pinnae ca. 6 pairs, basal pair largest, deltoid, 4-6 × ca. 5 cm, shortly stalked (2-3 mm), apex acuminate; pinnules 4 or 5 pairs, basiscopic pinnules enlarged, basal basiscopic pinnules longer than adjacent acroscopic ones, oblong-lanceolate to narrowly deltoid, 2-4 × 0.8-2 cm, sessile, base unequally cuneate, apex acuminate. Ultimate segments 3 or 4 pairs, oblong, 6-15 × 3-5 mm, margins mostly entire. Sori confluent, but mostly interrupted at sinuses. False indusia continuous, margins somewhat erose.

Rock crevices in forests; 1500-1900 m. Sichuan (Kangding), Yunnan (Kunming) [Bhutan].


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