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Published In: Annals and Magazine of Natural History, ser. 2 3: 491. 1849. (Ann. Mag. Nat. Hist., ser. 2) Name publication detail
 

Project Name Data (Last Modified On 3/16/2009)
Acceptance : Accepted
Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Coscinodon cribrosus (Hedw.) Spruce (Figs. 1–13.)
Map: Coscinodon cribrosus (Hedw.) Spruce (Distribution in China)

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

 Habitat: on dry, exposed rocks; alt. 2700–3700 m.

Distribution: China, Japan, India, Russia, Europe, North Africa, and North America.
 
 

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:
Chinese specimens examined: Shaanxi: see the type information cited above. Taiwan: Hua-lin Co., Shyu-lin village, Koponen 18123 (H).
 

Notes     (Last Modified On 5/4/2009)
general taxon notes:
Coscinodon cribrosus is characterized by: 1) plants small, in dense hoary cushions; 2) leaves lanceolate, distinctly longitudinally plicate on each side of the costa; 3) basal leaf cells rectangular to somewhat elongate and thin-walled; 4) setae shorter than urns and capsules immersed in perichaetial leaves; 5) calyptrae large, covering almost the entire capsule; and 6) peristome teeth cribrose. Even though the specimen from Taiwan is sterile, gametophytic characteristics of this species are easily recognized. Coscinodon cribrose is very similar to Grimmia caespiticia (Brid.) Jur. in sterile condition. It differs from the latter by having smooth leaf cells and longer hyaline hair-pointed leaf apices (always longer than 0.5 mm). In contrast, Grimmia caespiticia has bulging, usually papillose leaf cells and much shorter hyaline hair-pointed leaf apices (Muñoz 1998b). This species does not occur in China. T. Cao and Vitt (1986) reported G. caespiticia from China based on misidentification of G. sinensi-anodon.

 

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1. Coscinodon cribrosus (Hedw.) Spruce   小孔筛齿藓   xiao-kong shai-chi xian
Ann. Mag. Nat. Hist. ser. 2, 3: 491. 1849. Grimmia cribrosa Hedw., Sp. Musc. Frond. 76. 1801. Type. “In petris Goslariae, nec non Hassiae montis Meisner elegeutem speciem primi detexerunt Persoon et Schrader” (holotype G).
Grimmia sinensi-anodon C. Müll., Nuovo Giorn. Bot. Ital., n. ser., 5: 188. 1898. Type. China: Shaanxi (Schen-si) Prov., in loco dicto Zu-lu (Sao-y-san), J. Giraldi 2063 (lectotype H, designated by T. Cao & Vitt 1986). Synonymized by Muñoz 1998b; with Grimmia caespiticia (Brid.) Jur. by T. Cao & Vitt 1986.
 
Plants small, ca. 5(–10) mm high, dark green to blackish green, in densely caespitose mats. Stems erect, simple, sometimes remotely branched. Leaves erect-imbricate when dry, crowded and enlarged toward apex, erect-spreading when moist, narrowly ovate-lanceolate, 1.0–2.0(–3.0) mm × 0.4–0.6 mm, keeled above, somewhat concave below, acuminate and ending with a long, hyaline hair-pointed leaf apex (usually longer than 0.5 mm), strongly plicate on both sides of costa; leaf margins entire, plane below, more or less incurved above shoulder; costa strong, single, percurrent, convex on the dorsal side, in cross section costal cells more or less uniform; upper and median leaf cells obscure, irregularly quadrate to rounded-quadrate, (8–)10–15 µm wide, thick-walled, smooth, in cross section bistratose in the upper part; basal marginal cells and juxtacostal cells short- to elongate-rectangular, 25–40(–50) µm × (8–)10–12 µm, thin-walled, smooth, marginal cells in 3–4 rows with transverse thickening walls. Sporophytes not seen.
 
 
 
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