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Published In: Die Musci der Flora von Buitenzorg 2: 514. 1904. (Musci Buitenzorg) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/18/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/4/2009)
General Reference:

Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Pohlia leucostoma (Bosch & Sande Lac.) M. Fleisch. (Figs. 1–8.)
Map: Pohlia leucostoma (Bosch & Sande Lac.) M. Fleisch. (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Habitat: on soil or thin soil over rocks; alt. 1700–3000 m.
Distribution: China, Japan, India, Nepal, Indonesia, and U.S.A. (Hawaii).

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:


Chinese specimens examined: Xizang: Ya-dong Co., Xizang Team 7855 (HKAS). Yunnan: Bao-shan Co., X.-J. Li 80-275 (HKAS); Gong-shan Co., M. Zang 747, 883, 1054 (all in HKAS); Kunming City, D.-C. Zhang 95-0914 (HKAS).

Notes     (Last Modified On 5/4/2009)
general taxon notes:
This species is characterized by having two different colors of its gemmae. The ovoid gemmae are reddish brown to pale brown; while the linear or vermicular gemmae are green or pale green.
Ochi (1959) considered that Pohlia leucostoma differs from P. gracillima in the morphology of its gemmae. The former has a large number of ovoid gemmae, occasionally a few linear ones in leaf axils, while the latter often produces abundant linear gemmae. We notice that specimens of P. leucostoma from Xizang and northwestern Yunnan produce mostly ovoid gemmae, sometimes mixed with both ovoid and linear ones, while plants from moist habitats in central and lower elevation regions of China tend to produce a large number of linear gemmae. For this reason, and after our examinations of many collections, we concluded that these two taxa belong to a single species that has different types of gemmae depending on moisture in the environment.


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14. Pohlia leucostoma (Bosch & Sande Lac.) Fleisch.   异芽丝瓜藓   yi ya si gua xian
Musci Buitenzorg 2: 514. 1904. Webera leucostoma (Bosch & Sande Lac.) Fleisch. in Par., Index Bryol. (ed. 2) 5: 114. 1905. Brachymenium leucostomum Bosch & Sande Lac., Bryol. Jav. 1: 142. 1860. Type: Indonesia. Java.
Pohlia gracillima (Card.) Horik. & Ochi, Liberal Arts J. Tottori Univ. 4: 13. 1954. Webera gracillima Card., Bull. Soc. Bot. Genève,, ser. 2, 1: 125. 1909.
Plants small to near medium-sized, very slender, up to ca. 15 mm long, green, yellowish green or brownish, in dense tufts. Stems erect, slender, loosely foliate, with brownish rhizoids at base. Leaves soft, curly when dry, spreading when moist, ovate-lanceolate or oblong-lanceolate, 1–2 mm × 0.3–0.7 mm, upper leaves smaller; margins plane or nearly so, entire or only serrulate near apex; costae ending near to the apex, sometimes decurrent at base; leaf cells linear, 70–120 µm × 7–10 µm, becoming narrower close to the margins. Gemmae in leaf axils, usually abundant, filiform to vermicular, without distinct leaf primordia. Dioicous. Sporophytes not seen.
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