New locality of Leptophascum leptophyllum (Pottiaceae)

Shan-Hsiung Lin, Kuei-Yu Yao, Chao-Rong Chen and Jia-Dong Yang

地孢苔（叢苔科）新產地

林善雄‧姚奎宇‧陳昭榮‧楊嘉棟

Leptophascum leptophyllum (Müll. Hal.) J. Guerra & Cano, J. Bryol. 22: 92, 2000.

         (地孢苔*) (Figs. 1-2)

Basionym: Phascum leptophyllum Müll Hal., Flora 71: 6, 1888.

Physcomitrium rhizophyllum Sak., Bot. Mag. Tokyo 52: 469, 1938.

Furnaria rhizophylla (Sak.) Sak., Muscol. Jap., 68, 1954.

Tortula vectensis Warburg et Crundwell, Trans. Brit. Bryol. Soc. 4: 763, 1965.

Tortula rhizophylla (Sak.) Iwatsuki et Saito, Misc. Bryol. Lichenol. 6: 59, 1972.

Chenia rhizohylla (Sak.) R. H. Zander, Phytologia 65(6): 425, 1989.

Chenia leptophylla (Müll. Hal.) R.H. Zander, Bull. Buffalo Soc. Nat. Sci. 32: 258, 1993.

 (薄葉陳氏苔、陳氏蘚)

A mundivagat species spreads by human agency through rhizoid-borne brood bodies in the soil diaspore bank; plants cleistocarpous, anacrogynous; lamina cells epapillose; leaf margin plane above, sharply crenulate to irregularly dentate above with sharp mid-marginal wall projections usually ending in a weak simple papila; marginal cells often smaller than medial; thin costa ending before apex; leaf apex with a brown thick-walled apiculus; costal section with epidermal cells and guide cells appearing homogenous, dorsal stereid band hardly differentiated, ventral stereid band absent.

   

        This is the third report of the species Leptophascum leptophyllum (Müll. Hal.) J. Guerra & Cano from Taiwan. Prviously discovery of Chenia leptophylla (Müll. Hal.) R.H. Zander ( = L. leptophyllum) inTaiwan was first made by Chiang and Hsu (1997), on the base of Yeliu collection of Dr. Hironori Deguchi who visited Taiwan in Jan. 1989, and later by Chao-Rong Chen (2008) while he studied his Master thesis of “Bryophyte inventory on hiking trails of Mt. Shihman”.

Distribution in Taiwan: Taipei Co., Yeiliu (Deguchi s.n. in HAST); Taoyuan Co., Mt. Shihman (Chao-Rong Chen-67a, 68 in TUNG, NHCUE); Nantou Co., Tsaotun (Kuei-Yu Yao-4322 in TUNG, TAIE).

Range: Cosmopolitan.

Fig. 1. Leptophascum leptophyllum (Müll. Hal.) J. Guerra & Cano. a-c: Leaves. d: Upper leaf marginal cells. e: Leaf apex. f-g: Leaves in cross section, in fig. f including leaf marginal cells and lamina cells. h-i: gemmae borne in leaf axil. j-k: brood bodies borne on the tip of minute rhizoid. l: costal transverse section. Scales: a-c: 0.375μm. d-e, h-l: 37.5μm. f-g: 75μm. All drawn from Kuei-Yu Yao-4322, Tsaotun.

Fig. 2. Leptophascum leptophyllum (Müll. Hal.) J. Guerra & Cano. a: Plant with rhizoids borne on stem and its base. b-c: Leaves, in fig. c with rhizoids borne on upper costa of leaf. d: Leaf apex. e: Medial lamina cells. f: Marginal cells of leaf. g: Alar cells of leaf. h: Upper marginal cells of leaf. i: Leaf in cross section. j: Stem in cross section. Scales: a: 0.75 mm. b-c: 400μm. d-h: 40μm. i-j: 80μm. All drawn from Chao-Rong Chen-67a, Mt. Shihman.

References:

Arts, T. and P. Sollman. 1991. Remarks on Phascum leptophyllum C. Müll., an earlier name for Tortula rhizophylla (Sak.) Iwats. & K. Saito. Lindbergia 17: 20-27. 

Chen, C.-R. 2008. Bryophyte inventory on hiking trails of Mt. Shihman. Master thesis of Department of Applied Science, National Hsinchu University of Education, Hsinchu.

Chiang, T.-Y. and T.-W. Hsu. 1997. Chenia leptophylla (C. Müll.) Zand. (Family Pottiaceae), a generic and species record new to moss flora of Taiwan. Taiwania 42(3): 161-164.

Corley, M. F. V., A. C. Crundwell, R. Düll., M. O. Hill and A. J. E. Smith. 1981 [1982]. Mosses of Europe and the Azores; an annotated list of species, with synonyms from the recent literature. J. Bryol. 11: 609-689.

Eckel, P. 1986. Didymodon australasiae var. umbrosus new to eastern North America. The Bryologist 89: 70-72.

Guerra, J. and M. J. Cano. 2000. A taxonomic contribution on the European cleistocarpous species of Pottiaceae (Musci). J. Bryol. 22: 91-97.

Hedderson T. A. and R. H. Zander. 2008. Chenia ruigtevleia (Pottiaceae), a new moss species from the Western Cape Province of South Africa. The Bryologist 111(3): 496-500.

Reese, W. D. 1967. The discovery of Tortula vectensis in North America. Bryologist 70: 112-114.

Sakurai, K. 1938. Beobachtungen über japanische Moosflora. XVII. Bot. Mag. Tokyo 52: 469. 1938.

Sakurai, K. 1954. Muscologia Japonica. Pp. 247, Iwanami Shoten, Tokyo.

Saito, K. 1973. Memoir of the Japanese Pottiaceae (1). Subfamily Pottioideae. Bull. Natn. Sci. Mus. Tokyo 16: 81-91.

Segarra, J. G. 2001. Nota briològica, Leptophascum leptophyllum (Müll. Hal.) Guerra et Cano, novetat per a la flora briològica aragonesa. Orsis 16: 187-188.

Warburg, E. F. and A. C. Crundwell. 1965. Tortula vectensis, a new species from the Isle of the Wight. Trans. Brit. Bryol. Soc. 4: 763-766.

Zander, R. H. 1989. Seven new genera in Pottiaceae (Musci) and a lectotype of Syntrichia. Phytologia 65: 432-436.

Zander, R. H. 1993.Genera of the Pottiaceae: mosses of harsh environments. Bull. Buffalo Soc. Nat. Sci. 32:1-378. 

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*New Mandarin plant name