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Published In: Bulletin of the New York Botanical Garden 8(31): 369. 1914. (Bull. New York Bot. Gard.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 4/2/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/6/2009)
General Reference:

Illustration & Map     (Last Modified On 5/6/2009)
Illustrations: Isopterygium saxense R.S. Williams (Figs. 1–18.)
Map: Isopterygium saxense R.S. Williams (Distribution in China)

Distribution     (Last Modified On 5/6/2009)
Habitat: on rocks or soil in forests; alt. 700–1500 m.
Distribution: China and the Philippines.


Specimens Examined     (Last Modified On 5/6/2009)
Specimens Examined:


Chinese specimens examined: Guangdong: Sha-qing, Huang-po cave, P.-J. Lin 113 (PE); Ru-yuan Co., Z.-H. Li 95063, 95101, 95222, 95287 (all in SYS), W.-B. Tang 96013 (SYS).

Notes     (Last Modified On 5/6/2009)
general taxon notes:
This species is close to Isopterygium albescens, but differs in having shorter and thicker leaf apices and serrulate stem leaves.


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6. Isopterygium saxense Williams   石生同叶藓   shi sheng tong ye xian
Bull. New York Bot. Gard. 8: 369. 1914. Type: the Philippines.
Plants pale green. Stems prostrate, radiculose, subpinnately branched, branches short; in stem cross section outer cortical cells in 2 layers, thick-walled; central strand absent; pseudoparaphyllia filamentous or very linear-lanceolate. Stem leaves ca. 1.0 mm × 0.25 mm, triangular-lanceolate, shortly acuminate; margins entire or slightly serrulate near apex; costae indistinct; median leaf cells 40–50 µm × 5–6 µm; alar cells not differentiated; branch leaves smaller, clearly serrulate. Dioicous. Perichaetial leaves lanceolate, ca. 2 mm long, slenderly acuminate, falcate-secund. Setae 12–14 mm long; capsules pendulous, shortly ellipsoid, ca. 1 mm long, constricted below the mouth when dry, exothecial cells papillose, quadrate, ca. 20 µm wide, thick-walled; stomata lacking; opercula slenderly rostrate; annuli wide; peristome hypnoid. Spores 12–14 µm in diameter, papillose.
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