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!Isopterygium saxense R.S. Williams Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Publicado en: 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
 

Datos del Proyecto Nombre (Last Modified On 4/2/2009)
Aceptación : Accepted
Datos del Proyecto     (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.)
Mapa: Isopterygium saxense R.S. Williams (Distribution in China)

Distribución     (Last Modified On 5/6/2009)
Distribución:
 
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).
 

Notas     (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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