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Pinnatella M. Fleisch. 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 45: 79. 1906. (Hedwigia) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 12/16/2011)
Acceptance : Accepted
Notes     (Last Modified On 12/15/2011)
general taxon notes:
Fifteen species are recognized in the world (Enroth 1994b). Recently, a new species, Pinnatella homaliadelphoides Enroth, S. Olsson, S. He, Shevock & D. Quandt, was described from Yunnan (Enroth et al. 2010). Nine species are currently known in China.

 

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2. Pinnatella M. Fleisch.   羽枝藓属   yu zhi xian shu
Hedwigia 45: 79. 1906.
 
Plants medium-sized to rather large, rarely small, yellowish green or dark green, not glossy, in loose tufts or mats. Primary stems creeping; secondary stems erect or ascending, to 10 cm long, 1–2-pinnately branched; pseudoparaphyllia foliose; central strand well differentiated or absent. Stipe leaves triangular to broadly ovate; stem and branch leaves similar, mostly ovate or oblong-ovate, rarely broadly lingulate, usually strongly concave, sometimes transversely undulate, obtuse, broadly acute, or shortly acuminate at the apex; margins serrate above; costae single, ending near leaf apex, rarely shorter and double; upper leaf cells usually rounded-quadrate, rounded-hexagonal, rhombic, or elliptical, moderately thick-walled, sometimes papillose; median cells slightly elongate; basal cells rectangular to oblong, somewhat thick-walled, sometimes porose; alar cells few, quadrate to shortly rectangular; intramarginal cells below the mid-leaf more or less differentiated. Axillary hairs 3–5 cells long. Dioicous. Perichaetia laterally on secondary stems. Setae short, straight, smooth or scabrose; capsules ovoid to oblong-ovoid, erect to slightly inclined, symmetric; opercula conic, obliquely rostrate; annuli not differentiated; peristome double; exostome teeth 16, lanceolate, densely papillose, often perforate; endostome segments narrowly lanceolate, slightly shorter or as long as the teeth, densely papillose; basal membrane moderately high; cilia absent. Calyptrae cucullate, grayish brown, sparsely hairy. Spores spherical, finely papillose.
 
 

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1. Leaves strongly complanate, shortly wide-spathulate, often lobed at the base; costae nearly absent................
........................................................................................................................................... 5. P. homaliadelphoides
1. Leaves often concave, mostly ovate or oblong-ovate, rarely broadly lingulate, not lobed at the base; costae usually single, strong, or sometimes short............................................................................................................. 2
2. Intramarginal cells (teniolae) below the leaf apex clearly and strongly differentiated.. 1. P. alopecuroides
2. Intramarginal cells below the leaf apex not or weakly differentiated.............................................................. 3
3. Leaf apices narrowly acute or acute....................................................................................................................... 4
3. Leaf apices obtuse or obtusely acute..................................................................................................................... 6
4. Plants to 20 cm long; leaves ovate-lanceolate, narrowly acute at the apex; median leaf cells 15–25 µm × 4–5 µm, distinctly elongate, longer than upper cells 12–20 µm × 5–6 µm......................... 9. P. taiwanensis 
4. Plants only to 10 cm long; leaves broadly ovate-lanceolate or nearly triangularly ovate-lanceolate, shortly acute at the apex; median and upper leaf cells more or less similar, 6–15 µm × 5–10 µm........................... 5
5. Central strand present in stem cross section................................................................................... 2. P. ambigua
5. Central strand absent in stem cross section...................................................................................... 7. P. makinoi
6. Costae single, slender, reaching just above the mid-leaf or sometimes shorter, double; median leaf cells sublinear, 20–30 µm long, thick-walled, distinctly porose............................................ 3. P. anacamptolepis
6. Costae single, thick, reaching to the leaf apex, occasionally costae forked at the tips; median leaf cells oval to rhomboidal, 10–20 µm long, moderately thick-walled, not or indistinctly porose............................ 7
7. Central strand present in stem cross section; leaves oblong-ovate............................................. 6. P. kuehliana
7. Central strand absent in stem cross section; leaves ovate-lingulate.................................................................... 8
8. Stipe leaves triangular; stem leaves 2.5–2.6 mm × 1.2–1.3 mm, distinctly undulate or plicate when dry, moderately decurrent at the base................................................................................................ 4. P. foreauana
8. Stipe leaves ovate; stem leaves 1.5–2.2 mm × 0.8–0.9 mm, somewhat plicate when dry, not decurrent at the base.............................................................................................................................................. 8. P. robusta
 
 
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