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Chinese Plant Names | Family List | Adiantaceae | Adiantum

Adiantum gravesii Hance


Description from Flora of China

Adiantum greenii Ching; A. leveillei Christ.

Plants terrestrial, 4-14 cm tall. Rhizomes erect, short, scales black subulate-lanceolate, margins denticulate. Fronds clustered; stipe castaneous-black, glossy, 1-6 cm, slender, glabrous; lamina 1-pinnate, oblong or ovate-lanceolate in outline, 3-6 × 2-2.5 cm; costae and stalks same color as stipes; pinnules 2-4 pairs, 1-2 cm apart, alternate, obliquely spreading upward; stalk up to 3 mm (ca. 1/5 as long as pinnae or shorter), articulate, persistent after pinnules fall; blade broadly obovate or broadly ovate-triangular, ca. 1 × 1 cm, papery, abaxially glaucous, adaxially grayish green, both surfaces glabrous, base rounded-cuneate or rounded, both sides slightly undulate, apex rounded, with 1(or 2) shallow sinus, entire; veins dichotomously branching, and reaching cartilaginous margins, visible on both surfaces. Sori 1(or 2) per pinna; false indusia brown, reniform or lunate (rarely orbicular), leathery, upper margin depressed, persistent.

Adiantum gravesii is very similar to A. lianxianense but differs in the plants being taller and stronger, having larger, broadly ovate or broadly obovate-triangular pinnules that are abaxially glaucous and with shorter stalks.

"Adiantum gravesii var. leveillei" (Ching ex S. K. Wu, FRPS 3(1): 181. 1990) is a nomen nudum and was not therefore validly published (Melbourne Code, Art. 38.1(a)).

Gregarious on wet cliffs, rock crevices, chalky soils in caves; 600-1500 m. Guangdong, Guangxi, Guizhou, Hubei, Hunan, Sichuan, Yunnan, Zhejiang [N Vietnam].


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