Tropicos | Name - !Distichophyllum collenchymatosum Cardot

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!Distichophyllum collenchymatosum Cardot

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Project Name Data (Last Modified On 3/20/2009)

Acceptance : Accepted

Project Data (Last Modified On 5/5/2009)

General Reference:

Wu Peng-cheng, M. R. C. & S. He. 2002. Hookeriaceae–Thuidiaceae. 6. viii + 221 pages. In Moss Fl. China. Science Press & Missouri Botanical Garden, Beijing, New York & St. Louis.

Illustration & Map (Last Modified On 5/5/2009)

Illustrations:

Distichophyllum collenchymatosum Cardot (Figs. 1–2.)

Map:

Distribution (Last Modified On 5/5/2009)

Distribution:

Habitat: on shady rocks, decaying logs, forest floor and road banks; alt. 200–1200 m.

Distribution: China, Korea, Japan, and the Philippines.

Specimens Examined (Last Modified On 5/5/2009)

Specimens Examined:

Chinese specimens examined: Fujian: Gu-tian Co., D.-K. Li 20279 (FH, IBSC); Mt. Wuyi, D.-K. Li 16303 (FH, IBSC). Guangdong: Feng-kai Co., P.-J. Lin 36 (FH, IBSC); ibid, Heshiding Nature Reserve, J.-L. Zhang & S.-H. Shi 121, 141 (FH, SYS); Ru-yuan Co., P.-J. Lin 758 (IBSC, MO), L. Zhang 98 (FH, IBSC); Shi-xing Co., P.-J. Lin 4491 (IBSC); Yang-chun Co., B.-H. Liang 89785 (FH, IBSC). Guangxi: Li-po Co., Z.-H. Zhang 2534 (FH). Guizhou: Mt. Leigong, B.-C. Tan 91-789 (FH). Hainan: Mt. Diaoluo, P.-J. Lin 3346 (FH, IBSC); Mt. Jianfeng, P.-J. Lin et al. 577 (FH, IBSC). Hong Kong: (as D. sinense, see Dixon 1933). Hunan: Mang Shan (Mt.), P.-J. Lin et al. 1135 (FH, IBSC); Yi-zhang Co., P.-J, Lin et al. 940 (IBSC). Taiwan: Ilan Co., W.-C. Lee 256 (FH, IBSC); Tai-pei Co., C.-C. Chuang 5019 (FH, IBSC); Tao-yuen Co., M.-J. Lai 9417 (H). Yunnan: Gong shan (Mt.), C.-W. Wang s.n. (FH, IBSC). Zhejiang: Mt. Xitianmu, P.-C. Wu 7911 (MO); Wen-zhou City, D.-K. Li 8294 (FH, IBSC).

Notes (Last Modified On 5/5/2009)

general taxon notes:

Dixon (1933) characterized this variety as having narrow, robust and shortly cuspidate leaves and pellucid, rather large leaf cells, which are slightly but not very markedly smaller toward the margins. The large, pellucid leaf cells separate this species from Distichophyllum maibarae, which has smaller leaf cells and a much shorter leaf apical mucro. The nearly uniform leaf cells across the blade from the margins to the costa separate D. collenchymatosum from D. cirratum, which has several submarginal rows of distinctively smaller leaf cells.

Thériot (1907) compared Distichophyllum cavaleriei with D. nigricaule and D. heterophyllum and concluded that it differed from the latter two species by the larger leaf cells and broader leaf borders. Our examination shows that these distinguishing features fall within the accepted range of characters of D. collenchymatosum.

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3. Distichophyllum collenchymatosum Card. 厚角黄藓 hou-jiao huang xian

Bull. Soc. Bot. Genève, ser. 2, 3: 278. 1911. Type. Japan.

3a. Distichophyllum collenchymatosum var. collenchymatosum 厚角黄藓原变种 hou-jiao huang xian yuan bian-zhong

Distichophyllum cavaleriei Thér., Monde Pl., ser. 2, 9: 22, 1907. Type. China: Guizhou, Tong Tcheou, 1904, J. Cavalerie s.n. (lectotype PC, designated by P.-J. Lin & B. C. Tan 1995).

Distichophyllum sinense Dix., Hong Kong Naturalist., Suppl. 2: 22. 1933. Type. China: Guangdong, White Cloud Mountain, Herklots 302C.

Distichophyllum cf. perlimbatum Broth., in Z.-H. Li & Piippo, Trop. Bryol. 9: 40. 1994, nom. nud.

Plants small to medium-sized, densely tufted. Stems often irregularly branched, complanately and densely foliate, 1–3(–6) cm tall, 3–5 mm wide with leaves. Leaves contracted and undulate when dry, ovate-oblong to broadly lingulate, 1.5–3.0 mm × 1.0 mm, with a distinct, well developed and stout apical acumen or mucro measuring 20 to 50 µm long; leaf margins entire, plane to wavy when wet, with a well developed border consisting of 2–3 rows of thin-walled, linear cells, measuring 12–18 µm wide; costa well developed, extending to leaf apex or ending well below the apex; laminal cells large, round-polygonal, (27–)34–56 µm wide, thin-walled, slightly collenchymatous, nearly uniform in size from the margin to costa, becoming slightly smaller only near the apex and extreme periphery, rectangular at leaf base. Perichaetial leaves narrowly oblong, small, less than l mm long, with distinct border. Sporophytes lateral. Setae elongate, 10–15 mm long, smooth; capsules ovoid, about 1.0–1.5 mm long. Gemmae filamentous, highly branched, multiseptate present on the abaxial, basal part of leaf costa.