Pohlia tibetana X.R.Wang & X.M.Shao, 2022
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publication ID |
https://dx.doi.org/10.3897/phytokeys.206.84716 |
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persistent identifier |
https://treatment.plazi.org/id/222D8393-9B39-53B3-8634-9C5B45A8A49D |
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treatment provided by |
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scientific name |
Pohlia tibetana X.R.Wang & X.M.Shao |
| status |
sp. nov. |
Pohlia tibetana X.R.Wang & X.M.Shao sp. nov.
Figs 1 View Figure 1 , 2 View Figure 2
Type.
China. Tibet, Linzhi City, Sygera Mountain, Lulang Town , 29°49'0.96"N, 94°44'27.24"E, 3101 m a.s.l., 4 August 2017, Wei Li & Li-wei Wang 20170804LL010 (holotype: BAU!) GoogleMaps .
Diagnosis.
The new species differs most saliently from other species of Pohlia by the combination of slender plants (Figs 1A View Figure 1 , 2A View Figure 2 ), loosely attached leaves (Figs 1A View Figure 1 , 2A View Figure 2 ) and axillary solitary, dark red and flower-like gemmae (Figs 1A, F View Figure 1 , 2A, F View Figure 2 ) (Table 1 View Table 1 ).
Description.
Plants slender, light green, dull. Stems 0.5-1.2 cm. Leaves spreading, somewhat contorted when dry, lanceolate to ovate-lanceolate, 0.5-1.0 mm long, somewhat decurrent; margins serrulate to serrate in distal 1/2; costa ending 3-5 cells below leaf apices. Distal laminal cells rhomboidal, 35-70 μm long, 7-11 μm wide, walls thin; Median laminal cells linear-rhomboidal, 70-110 μm long, 5-11 μm wide, walls thin. Basal laminal cells rectangular, 23-65 μm long, 9-16 μm wide, walls thin. Axillary gemmae borne singly in upper leaf axils, 200-280 μm long, 140-230 μm wide, yellowish brown to deep cherry-red, opaque, rosebud shaped, with conspicuous, incurved, peglike to broadly triangular laminate leaf primordia scattered on the bulbiform body. Leaf primordia the same color as the body, arising as elongate, peglike outgrowths, but rapidly differentiating to form a laminate appearance. Sporophytes unknown in China populations.
Etymology.
The specific epithet Pohlia tibetana refers to the type locality in Tibet in southwestern China.
Distribution and habitat.
Currently Pohlia tibetana is only known from the type locality. This species grows on loose soil of rocks in the forest of Pinus armandii Franch. It forms tufts mixed with Pohlia flexuosa Harvey, Pohlia hisae T.J.Kop. & J.X.Luo and Calypogeia fissa (L.) Raddi.
Chinese name.
西藏丝瓜藓 (xī zàng sī guā xĭan)
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