Philonotis uncinata (Schwägr.) Brid.
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Authority
Buck, William R. 2003. Guide to the plants of central french Guiana. Part 3. Mosses. Mem. New York Bot. Gard. 76: 1-167.
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Family
Bartramiaceae
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Scientific Name
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Description
Species Description - Plants small to medium-sized, 0.5-3 cm tall, glaucous- to yellow-green, in dense to lax tufts. Leaves erect and often secund, especially at stem apices, when dry, erect-spreading when moist, oblong-lanceolate to triangular-lanceolate, 0.5-1.5 x 0.2-0.35 mm; margins toothed nearly throughout, the teeth paired, often revolute below; costa subpercurrent to short-excurrent; cells short- to long- rectangular, 30-80 x 4-10 µm, prorulose at upper ends, especially on adaxial surface; basal cells scarcely to distinctly laxer and wider. Asexual reproduction none. Dioicous. Setae 1.5-3 cm long; cap¬sules 1.5-2 mm long, inclined to cernuous, subglobose, furrowed; exostome teeth papillose; endostome segments nearly as long as the teeth.
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Discussion
This is a variable species, with a vast synonymy. Our material can be segregated as var. glaucescens (Homschuch) Florschutz [Syn.: P. glaucescens (Homschuch) Paris]. It is recognized by leaves at the stem apices not hooked and with a percurrent costa. The var. uncinata has leaves hooked at stem apices and an excurrent costa.
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Distribution
On rock along Crique de l'Est, uncommon, 200 m.
French Guiana South America|