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Published In: Species Muscorum Frondosorum, Supplementum Primum 1: 90. 1811. (Sp. Musc. Frond., Suppl. 1) 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: Grimmia incurva Schwägr. (Figs. 13–20.)
Map: Grimmia incurva Schwägr. (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Distribution:

 

Habitat: on rocks and cliffs; alt. 1400–3200 m.
Distribution: China, Japan, Russia, Europe, and North America.
 

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:
Chinese specimens examined: Jiangxi: Mt. Lushan, W.-M. Zhu 7715 (IFSBH), D.-K. Li 017377 (SHM). Shaanxi: Mt. Miaowangsan, F. Hugh 132(b) (as Grimmia proboscidea Dix., sp. nov., BM). Taiwan: Ilan Co., C.-I. Peng 83-35A (MO). Xizang: Lang Co., M. Zang 1753 (HKAS); Ya-dong Co., M. Zang 449 (HKAS).
 

Notes     (Last Modified On 5/4/2009)
general taxon notes:
Grimmia incurva is distinguished from other Chinese species of Grimmia by having leaves linear-lanceolate from an elongate-rectangular base. Other distinct features are: 1) leaves contorted when dry; 2) margins narrowly recurved on one side; 3) basal juxtacostal leaf cells elongate, with sinuose walls; and 4) basal marginal leaf cells hyaline and rectangular with thin walls. Character variation in G. incurva sometimes occurs. According to the original description of this species, the setae are curved. However, the type specimen has nearly straight setae. We have seen only one Chinese specimen that has curved setae. Deguchi (1978) indicated that most Japanese specimens had straight setae. Nevertheless, numerous European specimens have curved setae. Grimmia incurva has been reported as dioicous in Europe and North America, and we have verified European and North American specimens. However, Deguchi (1978) found that some specimens of G. incurva in Japan are autoicous. We also found that one Chinese specimen with sporophytes is autoicous.

 

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10. Grimmia incurva Schwaegr.   卷叶紫萼藓   juan-ye zi-e xian
Sp. Musc. Frond., Suppl. 1(1): 90. 1811. Grimmia contorta var. incurva (Schwaegr.) Molendo, Jahres-Ber. Naturhist. Vereins Passau 10: 119. 1875. Type. Austria: “In summis alpibus Carinthiae, Glockner, C. Ludwig.” (lectotype G, designated by Deguchi 1978).
 
Plants up to 2 cm high, green to dark green above, dark brown to black below, in loose tufts. Stems moderately branched, with poorly developed central strand in cross section. Leaves appressed, more or less crisped or contorted when dry, spreading when moist, linear-lanceolate from elongate-rectangular base, upper part elongate-subulate, keeled above, 2.5–3.0 mm long, ending with smooth, hyaline hair-points; margins narrowly recurved on one side; costa percurrent, consisting of nearly homogeneous cells or somewhat small abaxial cells in cross section; upper cells unistratose except bistratose at margins, irregularly quadrate, sinuose, ca. 7 µm wide; median cells short-rectangular, 12–16 µm × 6–7 µm, with thick and strongly sinuose walls; basal marginal cells hyaline, elongate-rectangular to rectangular, 23–69 µm × 9–11 µm, with thin and straight walls; basal juxtacostal cells with more or less nodulose, thickened longitudinal walls. Dioicous or autoicous. Perichaetial leaves similar to vegetative leaves, but larger, with long hyaline hair-points. Setae more or less curved, twisted when dry, yellowish, ca. 2 mm long; capsules yellowish brown, cylindrical, ca. 2 mm long; exothecial cells elongate-hexagonal to rectangular, thin-walled; stomata present at base of urn; annuli consisting of quadrate cells with thick walls; opercula with obtuse beaks; peristome teeth lanceolate, outer surface densely papillose above, sparsely papillose below, inner surface papillose throughout. Calyptrae mitrate. Spores not seen.
 
 


 

 
 
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