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Rhynchostegium Schimp. Search in The Plant ListSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Bryologia Europaea 5: 197 (fasc. 49–51. Mon. 1.). 1852. (Bryol. Eur.) Name publication detail
 

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Notes     (Last Modified On 3/31/2009)
general taxon notes:
Rhynchostegium consists of some 128 species in the world with only some 38 species that are better understood (Crosby et al. 2000). In China, P.-C. Chen et al. (1978) reported 15 species, and Redfearn et al. (1996) listed 20 species. Some of these records cannot be verified by this study, such as R. acicula (Broth.) Broth., R. celebicum (Sande Lac.) A. Jaeger, R. confertum (Dicks.) Schimp., R. dasyphyllum Müll. Hal. in Levier, R. herbaceum (Mitt.) A. Jaeger, R. murale (Hedw.) Schimp., R. planiusculum (Mitt.) A. Jaeger, and R. sinense (Broth. & Paris) Broth. Rhynchostegium obsoletinerve Broth. was synonymized with Herzogiella turfacea (Lindb.) Z. Iwats. by Y.-F. Wang and R.-L. Hu (1998). Ten species of Rhynchostegium are treated here.
 
 

 

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10. Rhynchostegium Bruch & Schimp. in B.S.G.   长喙藓属   chang hui xian shu
Bryol. Eur. 5: 197. 1852. Hypnum sect. Rhynchostegium (Bruch & Schimp.) Sull. in Gray, Manual (ed. 2) 670. 1856. Hypnum subgen. Rhynchostegium (Bruch & Schimp.) Hobk., Syn. Brit. Mosses 157. 1873.
 
Plants slender to rather robust. Stems prostrate, more or less irregularly branched. Stem and branch leaves more or less similar, often concave, linear-lanceolate, lanceolate, ovate-lanceolate, broadly ovate, or elliptical, acute, apiculate, shortly to slenderly acuminate; margins entire or serrulate; costae often reaching mid-leaf or beyond, not projecting at tips; median leaf cells elongate-rhomboidal to linear; alar cells differentiated, cells shorter, broader, shortly rectangular or quadrate. Autoicous. Perichaetial leaves sheathing at base, slenderly acuminate, curved at apex. Setae reddish, smooth; capsules inclined to horizontal, ovoid to cylindrical, slightly curved, constricted below mouth when dry; opercula conic at base, often long rostrate; peristome double; exostome teeth papillose above, cross-striolate below, trabeculate on ventral surface; endostome segments lanceolate, perforate; basal membrane high; cilia nodulose. Calyptrae cucullate, smooth. Spores spherical, yellowish green, smooth or papillose.
 
 

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1. Leaves oval, rounded-ovate or orbicular................................................................................................................ 2
1. Leaves elliptical, oblong-ovate-lanceolate to narrowly ovate-lanceolate........................................................... 3
2. Leaves oval, narrowly acute to shortly acuminate at apex; median leaf cells 9–13 µm wide................... 4. R. ovalifolium
2. Leaves rounded ovate or orbicular, broadly acute or apiculate at apex; median leaf cells 6–7 µm wide........
...................................................................................................................................................... 7. R. riparioides
3. Leaves acute or narrowly acute at apex.................................................................................................................. 4
3. Leaves shortly acuminate to long acuminate......................................................................................................... 5
4. Leaves ovate-lanceolate, narrowly acute at apex...................................................................... 3. R. inclinatum
4. Leaves elliptical, acute at apex...................................................................................................... 10. R. vagans
5. Leaves linear-lanceolate or oblong-lanceolate..................................................................................................... 6
5. Leaves ovate-lanceolate, elliptical-lanceolate, or oblong-ovate-lanceolate...................................................... 7
6. Leaves linear-lanceolate; median leaf cells 53–88 µm × 5.5–6.0 µm; alar cells clearly differentiated.......2. R. fauriei
6. Leaves oblong-lanceolate; median leaf cells 140–190 µm × 7–9 µm; alar cells few...... 5. R. pallenticaule
7. Leaves elliptical-lanceolate or ovate-lanceolate, asymmetrical at leaf base, often twisted at apex................. 8
7. Leaves oblong-ovate-lanceolate, symmetrical at leaf base, usually not twisted at apex.................................... 9
8. Stems irregularly pinnately branched; leaves ovate-lanceolate; median leaf cells 70–95 µm × 4.0–5.5 µm.
..................................................................................................................................................... 8. R. serpenticaule
8. Stems regularly pinnately branched; leaves elliptical-lanceolate; median leaf cells 160–195 µm × 10–12 µm...............................................................................................................................................9. R. subspeciosum
9. Leaves distinctly constricted at insertion; margins clearly serrate above leaf base; median leaf cells 90–103 µm long; alar cells oblong-rectangular......................................................................................... 1. R. contractum
9. Leaves not clearly constricted at insertion; margins only serrulate in upper margin; median leaf cells 110–175 µm long; alar cells shortly rectangular or oval.................................................................. 6. R. pallidifolium
 
 
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