屏边溪边蕨 ping bian xi bian jue

Cyclosorus dictyoclinoides (Ching) C. M. Kuo; Thelypteris dictyoclinoides (Ching) C. M. Kuo.

Plants ca. 50 cm tall. Rhizomes short and thick, ascending, almost scaly. Fronds clustered; stipes 15-23 cm, dark stramineous, glabrous on bases, throughout with spreading grayish white acicular hairs and short hairs; laminae broadly lanceolate, 15-25 × 7-10 cm, 1-pinnate, pinnatifid-acuminate at apices; pinnae 7 or 8 pairs, spreading, proximal 1 or 2 pairs free, sessile, slightly shortened, distal ones adnate to rachises and connected by narrow wings, apical ones connected by broad wings; proximal pinnae oblong-lanceolate, 3-4 × ca. 1.5 cm, bases truncate or rounded-cuneate, symmetrical, margins crenate, apices shortly acuminate; middle pinnae of similar shape as proximal ones, ca. 5 × 2 cm, bases adnate to rachises; costae raised on both sides. Veins evident, 3 or 4 pairs of veinlets joining into areoles, areoles in 2 lines, 4 or 5 per line, subsquare or pentagonal and with an excurrent veinlet arising from joining point ± tortuous, proximal pair of veinlets arising from far above bases of costules. Laminae herbaceous, dark brown-green when dry, both surfaces with dense grayish white acicular long hairs along rachises, costae, and veins. Sori linear, attached along veinlets (sometimes attached along excurrent veins), exindusiate. Sporangia each with 1 or 2 erect acicular hairs near top.

Streamsides in forests, steep forested slopes; 1200-2000 m. S and SE Taiwan, SE Yunnan [N Vietnam].