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Published In: Journal of Science of Hiroshima University, Series B, Division 2 (Botany) 16: 240. 1978[1979]. (J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot.) Name publication detail
 

Project Name Data (Last Modified On 3/16/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/4/2009)
General Reference:

Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Schistidium subconfertum (Broth.) Deguchi (Figs. 12–24.)
Map: Schistidium subconfertum (Broth.) Deguchi (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Distribution:
Habitat: on rocks in the alpine zones of high mountains.
Distribution: China and Japan.
 

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:
Chinese specimen examined: Sichuan: see the type information cited above.

Notes     (Last Modified On 5/4/2009)
general taxon notes:
 
Schistidium subconfertum is characterized by small plants, nearly muticous leaves, and vestigial peristome teeth. The basal leaf cells are somewhat transparent and much longer than those of other species of Schistidium in China. Bremer (1980b) considered S. subconfertum as a synonym of S. apocarpum seemingly based on the part of type specimens consisting of some S. apocarpum. Our examination of the type specimens indicated that the peristome teeth of S. subconfertum are truly vestigial, with much reduced lower parts of the teeth covered with dense papillae. Furthermore, smaller plants, muticous leaves (rarely very short hair-points on the upper leaves), and somewhat transparent, longer basal leaf cells distinguish Schistidium subconfertum from S. apocarpum.
 
Schistidium subconfertum resembles S. pulvinatum (Hedw.) Brid. in having similar vestigial peristome teeth, but differs from the latter in having muticous leaves. Schistidium pulvinatum has distinctly long, hyaline hair-pointed leaves, which give the habit a a grayish color.

 

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6. Schistidium subconfertum (Broth.) Deguchi   皱叶连轴藓   zhou-ye lian-zhou xian
J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 16(2): 240. 1979. Grimmia subconferta Broth., Symb. Sin. 4: 45. 1929. Type. China: Sichuan, Mu-li Co., alt. 4650 m, Handel-Mazzetti 7493 (holotype H; isotypes BM, E, S).
 
Plants small, only up to 1.5 cm high, yellowish green to brownish above, dark brown to blackish below, in rigid, dense tufts. Stems erect, frequently branched, without central strand in cross section. Leaves erect, imbricately appressed to stems when dry, spreading when moist, obtusely keeled above, 1.2–1.8 mm long, ovate-lanceolate to lanceolate, muticous or rarely with rather short, hyaline hair-points; margins entire, narrowly recurved on one side, bistratose above; costa stout, percurrent, gradually narrowed toward base, smooth on abaxial surface, consisting of nearly uniform cells in cross section; upper cells small, unistratose except at margins, irregularly quadrate, 4–5 µm wide, with incrassate and somewhat sinuose walls; median cells rectangular, 7–10 µm × 4–5 µm, with strongly sinuose walls; basal marginal cells short-rectangular to rectangular, more or less transparent, 10–23 µm × 4–7 µm, with nearly straight walls; basal juxtacostal cells elongate, 17–34 µm × 4–6 µm, somewhat transparent, with smooth walls. Autoicous. Perichaetial leaves large, ovate-lanceolate, cuspidate at apex; perigonia often located just below perichaetia. Setae yellowish brown, erect, 0.3–0.4 mm long, shorter than urns; capsules small, erect, immersed, oblong-ovoid, 0.7–0.8 mm long, smooth; exothecial cells oblate to quadrate, thin-walled; stomata present at base of urns; annuli wanting; opercula obliquely rostrate; peristome teeth vestigial, yellowish, densely papillose on both outer and inner surfaces. Calyptrae small, cucullate. Spores small, 7–9 µm in diameter, yellowish, smooth.
 
 
 
 
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