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Published In: Species Muscorum Frondosorum 45. 1801. (Sp. Musc. Frond.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/17/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/17/2009)
General Reference:

Notes     (Last Modified On 3/17/2009)
general taxon notes:
Tetraphis currently consists of two species in the world. Both species occur in China.


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1. Tetraphis Hedw.   四齿藓属   si-chi xian shu
Sp. Musc. Frond. 45. 1801. Georgia sect. Tetraphis (Hedw.) Braith., Brit. Moss Fl. 1: 28. 1880.
Plants small, bright green to reddish brown, in dense tufts. Stems erect, slender; triangular in cross section; central strand present. Leaves sparse, arranged in 3 ranks, lower leaves broadly ovate, acute at apex; upper leaves oblong-ovate, acuminate at apex; margins entire; costa strong, ending near leaf apex; upper and median leaf cells rounded-hexagonal, rather thick-walled; lower cells elongate, irregularly rectangular. Protonemata filamentous, short-lived. Gemmae cups often present at the tips of sterile plants. Autoicous (with perigonia and perichaetia terminal on different branches or sometimes some stems producing only perigonia). Perichaetial leaves lanceolate. Setae elongate; capsules narrowly cylindrical, erect, symmetric or slightly curved; opercula conic; annuli none; peristome 4, triangular, deeply inserted below the mouth, yellowish brown. Calyptrae long-conic, plicate. Spores spherical, smooth to slightly roughened.

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1. Plants smaller, 8–10(–15) mm high; capsules ca. 2.5 mm long; setae geniculate at middle, papillose in the upper half; spores larger, 12–16 µm in diameter, roughened..........1. T. geniculata
1. Plants larger, 12–18(–23) mm high; capsules ca. 3–4 mm long; setae straight, smooth; spores smaller, 10–12 µm in diameter, smooth.......................................................2. T. pellucida
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