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!!Drepanocladus (Müll. Hal.) G. Roth 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: Hedwigia 38(Beibl.): 6. 1899. (Hedwigia) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

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Notes     (Last Modified On 2/26/2009)
general taxon notes:

 

The genus Drepanocladus exhibits the most remarkable variability in the Amblystegiaceae. Loeske (1907) separated Limprichtia Loeske, Sanionia Loeske, Scorpidium (Schimp.) Limpr., Warnstorfia Loeske, and Pseudocalliergon (Limpr.) Loeske from Drepanocladus s. lat. Hedenäs (1989a) combined Limprichtia with Scorpidium, and established Hamatocaulis based on Hamatocaulis vernicosus (Mitt.) Hedenäs. In this flora, one species of Sanionia, two species of Warnstorfia, two species of Scorpidium, one species of Sasaokaea, and seven species and one variety of Drepanocladus are recognized. Redfearn et al. (1996) listed three species of Pseudocalliergon from China, including P. angustifolium Hedenäs (from Drepanocladus lycopodioides var. abbreviatus Moenk.), P. lycopodioides (Brid.) Hedenäs [from Drepanocladus lycopodioides (Brid.) Warnst.], and P. turgescens (T. Jens.) Loeske [from Scorpidium turgescens (T. Jens.) Loeske]. The Chinese records of the first two species cannot be verified at this time, and the third species is treated here in the genus Scorpidium.

 

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9. Drepanocladus (Müll. Hal.) G. Roth   镰刀藓属   lian dao xian shu
Hedwigia 38(Beibl.) 6. 1899. Hypnum subsect. Drepanocladus Müll. Hal., Syn. Musc. Frond. 2: 321. 1851.
Drepanocladus subgen. Limprichtia (Loeske) Podp., Consp. Musc. Eur. 588. 1954. Limprichtia Loeske, Hedwigia 46: 305. 1907.
 
Plants usually large, rather robust, green, yellowish green, or brownish, slightly glossy, in dense mats. Stems prostrate, erect or ascending, irregularly branched or regularly pinnately branched; pseudoparaphyllia foliose. Stem leaves usually falcate-secund or hooked, somewhat concave, usually plicate, oblong-lanceolate or ovate-lanceolate; slightly decurrent at base; margins plane, entire or nearly so; costae single, reaching ca. 1/2 the leaf length or longer, usually percurrent or sometimes excurrent; median leaf cells linear, smooth; basal cells short, broad, somewhat incrassate, porose; alar cells distinctly differentiated, sometimes extending close to costa at leaf base, hyaline, thin-walled, sometimes colored, thick-walled, often forming obvious auricles, occasionally not or hardly differentiated. Dioicous, rarely autoicous. Inner perichaetial leaves erect, elongate-lanceolate, plicate. Setae slender, elongate; capsules inclined or horizontal, ovoid, arching curved, mouth constricted when dry or after dissemination; annuli differentiated; cilia 2–4, nodulose. Spores yellowish or yellowish brown, smooth or finely papillose.
 

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1. Alar cells of stem leaves well differentiated........................................................2

1. Alar cells of stem leaves not or only slightly differentiated....................................6

   2. Leaf costae long-excurrent........................................................6. D. trichophyllus
   2. Leaf costae ending below the apex or only percurrent..........................................3
3. Basal leaf cells not porose; alar cells numerous, green or yellowish, more or less thin-walled...................... 4
3. Basal leaf cells strongly porose; alar cells few, brownish, moderately thick-walled.....5
4. Plants ca. 10–20 cm long; leaves usually distinctly falcate-secund.................. ....................................................................1a. D. aduncus var. aduncus
4. Plants ca. 20–60 cm long; leaves more or less straight or slightly falcate-secund......... ....................................................................1b. D. aduncus var. kneiffii
5. Leaf costae thick; alar cells yellowish, thick-walled............................4. D. sendtneri
5. Leaf costae slender; alar cells mostly hyaline, moderately thin-walled....5. D. sordidus
6. Stems without a central strand and hyalodermis; stem leaf cells thin-walled, not or only slightly porose.... ....................................................................7. D. vernicosus
6. Stems with a central strand and hyalodermis; stem leaf cells incrassate, strongly porose throughout...........................................................................7
7. Dioicous; median leaf cells 15–90 mm long....................................2. D. cossonii
7. Autoicous; median leaf cells 60–140 mm long............................... 3. D. revolvens
 
 
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