Bryoria barbata Li S.Wang & D. Liu, 2017

Wang, Li Song, Wang, Xin Yu, Liu, Dong, Myllys, Leena, Shi, Hai Xia, Zhang, Yan Yun, Yang, Mei Xia & Li, Li Juan, 2017, Four new species of Bryoria (Lichenized Ascomycota: Parmeliaceae) from the Hengduan Mountains, China, Phytotaxa 297 (1), pp. 29-41 : 34

Bryoria barbata Li S.Wang & D. Liu sp. nov. ( Fig.2 )

Mycobank # MB 816226

Thallus chestnut brown, decumbent to subpendent, irregularly dichotomously branched, pseudocyphellae oblong to fusiform, prominent, 0.5–1 mm long, grayish white to brown.

Type:— CHINA. Yunnan: Lijiang Co., Jiuhe village, Laojunshan Mt., 3860 m elev., 26°37’N, 99°43’E, on bark of Abies sp. , 22 May 2011, L. S. Wang & M. M. Liang 11-32052 ( KUN-L, Holotype!).

Etymology:— The epithet “ barbata ” refers to the morphology of the thallus resembling a beard.

Morphology:— Thallus decumbent to subpendent, 5–10(15) cm long ( Fig. 2A ); surface light brown, yellowish brown to chestnut brown, smooth and shiny; branching anisotomic-dichotomic, branches cylindrical, 0.3–0.6 mm in diam., branch angles obtuse near the base, becoming acute near the tips; lateral spinules rare or absent, 0.1–0.3 mm long; spinulose branches rare, concolorous with the thallus, 1–2 mm long; pseudocyphellae oblong to fusiform, grayish white, light brown or dark brown, prominent, 0.5–1 mm long ( Fig. 2B ); soralia absent; isidia - like spinules absent; cortex 80–100 μm thick, single-layered, outer part brownish, inner part hyaline; medulla hyphae loosely arranged, not ornamented, 4–5 μm in diam.; apothecia lateral and sessile, exciple grayish white, eciliate, disc dark fawn brown to yellowish brown, concave when young, becoming flat to convex when mature, 0.2–2 mm in diam. ( Fig. 2C ); asci clavate, 8-spored, ascospores broadly ellipsoid to subglobose, simple and hyaline, c. 4 × 5 μm, spore wall 0.5 μm thick; pycnidia not seen.

Secondary metabolites:— Medulla P+ orange red, K–, C–, KC–, CK–, containing fumarprotocetraric acid.

Substrate and ecology:— Usually on bark of Abies , Picea and Rhododendron , rarely on rock, at elevations between 2450–4300 m.

Distribution in China:— Jilin, Inner Mongolia, Shannxi, Sichuan, Xizang and Yunnan.

World distribution:— Only known from China.

Notes:— This species is characterized by decumbent to subpendent thallus, irregularly dichotomic branching, chestnut brown thallus color, grayish white to brownish, oblong and prominent pseudocyphellae and the presence of fumarprotocetraric acid. It may be confused with B. trichodes (Michx.) Brodo & D. Hawksw. , which also has prominent pseudocyphellae. However, the latter species is pendent, usually light brown in color and has roundish and small (less than 0.5 mm) pseudocyphellae.

Selected specimens examined:— CHINA. Jilin Prov.: Changbai Mt., 800 m, 42°02’N, 128°08’E, 12 July 2007, H. Kashiwadani 200708079, 200708111, 84326 ( HMAS). Inner Mongolia: Aershan Ci., Xinganmotianling, 1400 m, 47°11’N, 119°58’E, J. B. Chen A –316 ( HMAS). Shannxi Prov. : Baoji Co., Taibai Mt. , 3500 m, 33°54’N, 107°46’E, 02 September 2014, X. Y. Wang , 14–44885. Sichuan Prov.: Daofu Co. , 3950 m, 30°46’N, 101°18’E, 31 August 2007, L. S. Wang 07–28336 ; Xiangcheng Co., Daxueshan, 4300 m, 28°34’N, 99°49’E, 11 September 2002, L. S. Wang 02–21402. Xizang Prov.: Jiayu Co. , Zhunbadala , 3600 m, 03 July 1975, M. Zang 67-e ; Chayu Co., Chawalong Vil., 3500 m, 27 September 1982, J. J. Su 4876–b ; Muruo Vil., 3912 m, 28°35’N, 98°01’E, 26 September 2014, L. S. Wang , 14–46712. Yunnan Prov.: Dali Co., Cangshan Mt. , 3600 m, 25°41’N, 100°06’E, 12 June 2005, L. S. Wang 05–24672 ; Deqing Co., Baima Snow Mountain, 4300 m, 28°22’N, 99°00’E, 21 June 2013, L. S. Wang , 13–38428 ; Lijiang Co., Jiuhe Vil., Laojunshan Mt. , 4150 m, 26°37’N, 99°43’E, 26 Novermber 1999, L. S. Wang 99-18709 ; Shanggerila Ci., Haba Snow Mt. , 3900 m, 27°20’N, 100°04’E, 26 October 2002, L. S. Wang 02–21778 .

Figures

FIGURE 2. Bryoria barbata. A. Habit; B. Grayish white and prominent pseudocyphellae; C. Sessile apothecia. All the scale = 1 mm, photo by Li Song Wang.