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FOC | Family List | FOC Vol. 2-3 | Dennstaedtiaceae | Microlepia

15. Microlepia tenera Christ, Notul. Syst. (Paris). 1: 53. 1909.

薄叶鳞盖蕨 bao ye lin gai jue

Leucostegia tenera (Christ) Ching; Microlepia singpienensis Ching; Oenotrichia tenera (Christ) Tagawa.

Plants terrestrial. Rhizome slender, long and creeping, ca. 1.5 mm in diam., with sparse gray hairs. Fronds distant; stipe gray-brown, ca. 20 cm, ca. 1.4 mm in diam., with scattered hairs, almost glabrous and with scabrous marks below; rachis and rachillae with sparse, gray, acicular hairs; lamina green when dried, 3-pinnatisect, oblong in outline, 20-36 × 12-15 cm, thinly herbaceous, both surfaces and along veins with sparse, gray, acicular hairs, base slightly wider, apex long acuminate; pinnae ca. 20 pairs, alternate, 5-6 cm apart, spreading, shortly stalked, closely connected upward, upswept, basal 8-10 pairs of pinnae bipinnate, oblong, slightly falcate, base rounded, symmetrical, apex acuminate, basalmost pair slightly longer, ca. 8 × 3-3.5 cm, pinnatisect; pinnules ca. 10 pairs, alternate, adjacent, spreading, almost sessile, 2-pinnatisect, oblong, slightly falcate, 15-20 × 8-10 mm, base asymmetrical, basiscopically cuneate, acroscopically truncate, apex obtuse; ultimate pinnules 6 or 7 pairs, oblong, 4-5 × ca. 2 mm, basal acroscopic pinnules largest, parallel with rachis, decurrent along narrowly winged rachillae, margin entire or distally with few broad obtuse teeth, apex rounded. Sori orbicular, small, at base of notch; indusium greenish, orbicular-reniform, small, fixed at basal notch, free laterally, membranous, glabrous, persistent.

● Forests, beside rocks; 1100-1400 m (in Taiwan). Guangxi, Guizhou, Taiwan, Yunnan.


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