1. Coniogramme petelotii Tardieu, Bull. Mus. Natl. Hist. Nat., sér. 2. 5: 334. 1933.
心基凤了蕨 xin ji feng liao jue
Coniogramme subcordata Ching, Bull. Fan Mem. Inst. Biol. 2: 213. 1931, not Copeland (1910), nor Maxon (1913).
Plants 30-50 cm tall. Rhizomes long creeping; scales brownish, narrowly lanceolate. Fronds closely spaced; stipe straw-colored, 10-40 cm × 2-4 mm; lamina dark green, ovate or narrowly ovate, nearly as long as stipe, 10-25 cm wide, trifoliolate or 1-pinnate, thinly papery or herbaceous when dry, both surfaces glabrous or nearly so. Lateral pinnae 2-5 pairs, oblong or oblong-lanceolate, 16-28 × 5-7 cm, with stalks 3-5 mm, base slightly cordate or broadly rounded, margin entire, apex shortly caudate; terminal pinna larger than lateral ones, with long stalk ca. 4 cm. Veins distinct abaxially, lateral veins 2-forked, oblique; hydathodes spindle-shaped, far from lamina margin. Sori extending to 2/3-3/4 of veins.
Rock cliffs in dense forests; 700-1400 m. Yunnan [Vietnam].
Fraser-Jenkins (Taxon. Revis. Indian Subcontinental Pteridophytes, 135. 2008) included Coniogramme petelotii within the following species, C. fraxinea.