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Duthiella Müll. Hal. ex Broth. 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: Die Natürlichen Pflanzenfamilien I((3)): 1009. 1908. (Nat. Pflanzenfam.) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 12/15/2011)
Acceptance : Accepted
Notes     (Last Modified On 12/13/2011)
general taxon notes:
There are about six species of Duthiella in the world (Crosby et al. 2000). Five species are known in China.

 

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2. Duthiella Müll. Hal. ex Broth.   绿锯藓属   lu ju xian shu
Nat. Pflanzenfam. I(3): 1009. 1908.
Matsumuraea S. Okamura, Bot. Mag. (Tokyo) 28: 106. 1914.
 
Plants soft, green, yellowish green to dark green, not or slightly glossy, in small flattened mats. Primary stems creeping, with dense, reddish brown rhizoids; secondary stems prostrate, ascending, rarely dendroid, irregularly pinnately branched, complanately foliate; central strand present or absent; pseudoparaphyllia absent. Stem and branch leaves similar, only different in size, often crisped when dry, erect-spreading when moist, ovate or broadly ovate at the base, gradually narrowed to a shortly acuminate apex, slightly decurrent at the base, sometimes rounded or auriculate; margins grossly serrate above, subentire to serrulate below; costae single, slender, ending above mid-leaf; upper and median leaf cells hexagonal, rhombic, or elongate-rhomboidal, thin-walled, with 1–3 or more minute papillae on both surfaces; basal cells rounded-hexagonal; alar cells scarcely differentiated. Dioicous. Perichaetia lateral on secondary stems or branches. Inner perichaetial leaves sheathing at the base, slender above. Setae elongate, up to 5 cm long, smooth; capsules oblong-ovoid, slightly inclined, with a short apophysis; opercula conic, obliquely shortly rostrate; annuli not differentiated; peristome double; exostome teeth 16, lanceolate, yellowish, papillose; endostome segments narrowly lanceolate, keeled, perforate, papillose; basal membrane high; cilia 3, nodulose. Calyptrae small, cucullate, smooth. Spores spherical, light yellow, minutely papillose.
 
 

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1. Leaf cells with 3–4(–6) papillae in rows over each cell lumen...................................................... 2. D. flaccida
1. Leaf cells with a single, rarely 2 papillae at or near the center of each cell lumen........................................... 2
2. Upper and median leaf cells elliptic or elongate-hexagonal...................................................... 5. D. wallichii
2. Upper and median leaf cells oblong-oval or elongate-rhomboidal, ca. 6 times as long as wide................... 3
3. Stem leaf apices often twisted; marginal leaf cells not clearly differentiated; leaf cells thin-walled................
..................................................................................................................................................... 4. D. speciosissima
3. Stem leaf apices usually rugose, not distinctly twisted; marginal leaf cells enlarged; leaf cells thick-walled 4
4. Leaves not appressed when dry; leaf cell walls sinuous; alar cells few................................... 1. D. declinata
4. Leaves usually appressed when dry; leaf cell walls not sinuous; alar cells numerous......... 3. D. formosana
 
 
 
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