南亚合睫藓

Dichodontium reinwardtii (Dozy & Molk.) Dozy & Molk., Bryol. Jav. 1: 85. 1859. Leptotrichum reinwardtii (Dozy & Molk.) Mitt., J. Linn. Soc. Bot., Suppl. 1: 12. 1859. Symblepharis dilatata Wils., Hooker’s J. Bot. Kew Gard. Misc. 9: 293. 1857. Symblepharis guizhouensis Tan, Q.-W. Lin, Crosby & P.-C. Wu, Bryologist 97: 134. 1994, syn. nov. Symblepharis breviseta Bartr., Ann. Bryol. 8: 7. 1935 (1936), hom. illeg. Type. China: Guizhou, Nin Tao Shan (Mt.), alt. 2000 m, S.-Y. Cheo 825 (holotype FH).

Plants small to medium-sized, up to 3 cm high, yellowish green above, brownish below, in dense tufts. Stems erect, simple or sparsely branched, crowdedly foliate, densely radiculose below. Leaves ca. 7 mm long, moderately crispate when dry, erect-spreading to strongly squarrose when moist, lanceolate from an erect, sheathing and strongly clasping base, rather abruptly narrowed from the shoulder, subulate to canaliculate toward the apex; margins undulate at the sheathing base, crenulate to serrulate near the apex, unistratose; costa broader at the base, reddish brownish, percurrent to shortly excurrent; upper cells rectangular to quadrate, from 20–30 µm × 6–9 µm to 9–14 µm × 9 µm, thick-walled, the cells near the margins becoming longer; lower cells in the sheathing base, rectangular, thin-walled, 50–75 µm × 8–12 µm, the cells near and above the shoulder becoming thick-walled and porose; alar cells not differentiated. Dioicous. Perichaetial leaves erect, with narrow limbs. Setae single, straight, 2–8 mm long, light brown; capsules slightly elongate-ovoid, erect, ca. 2.2 mm × 0.7 mm; peristome teeth reddish brown, dicranoid, spreading when dry. Spores brownish, warty.

Type. Indonesia: Java.

Chinese specimens examined: GUANGXI: Xing-an Co., C. Gao & G.-C. Zhang 1662 (IFSBH). GUIZHOU: Jiang-kou Co., C. Gao & J.-Y. Feng 32259 (IFSBH); Leigong Shan (Mt.), B.C. Tan 91-705 (FH) [as Symblepharis guizhouensis]. SICHUAN: Tian-quan Co., C. Gao et al. 18422 (IFSBH). TAIWAN: Ilan Co., Y. Shimada s.n. (TNS). XIZANG: Mo-tuo Co., Y.-G. Su 3500 (IFSBH, KUN). YUNNAN: Bin-chuan Co., M.-K. Cui 9580 (IFSBH).

Habitat: on rotten wood and bases of trees, rarely on rocks; Distribution: China, Nepal, India, Myanmar, Indonesia, and the Philippines.

Symblepharis guizhouensis was established by Tan et al. (1994) on the basis of S. breviseta Bartr. The species was published primarily based on its short setae [2–3(–6) mm long]. However, the seta length of S. guizhouensis is clearly within the range of setae found in S. reinwardtii.

Illustrations: Pl. 64, figs. 1–13.