Isopterygium tenerifolium Mitt.
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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
Hypnaceae
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Scientific Name
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Description
Species Description - Plants medium-sized, in lustrous, mostly soft, dark green when alive, becoming yellowish green, thin mats; stems creeping, to ca. 4 cm long, flaccid, irregularly but freely branched, the branches simple, complanate-foliate. Leaves crowded, complanate, wide-spreading to squarrose, often curved and asymmetric, although rarely straight and ± symmetric, ovate-lanceolate to ovate, gradually acuminate, 1.1-1.5 x 0.3-0.48 mm; margins minutely serrulate throughout, mostly narrowly erect ± throughout, rarely plane; Plants medium-sized, in lustrous, mostly soft, dark green when alive, becoming yellowish green, thin mats; stems creeping, to ca. 4 cm long, flaccid, irregularly but freely branched, the branches simple, complanate-foliate. Leaves crowded, complanate, wide-spreading to squarrose, often curved and asymmetric, although rarely straight and ± symmetric, ovate-lanceolate to ovate, gradually acuminate, 1.1-1.5 x 0.3-0.48 mm; margins minutely serrulate throughout, mostly narrowly erect ± throughout, rarely plane; costa short and double and indistinct or absent; cells linear, 140-215 x 5-6(8) µm, somewhat shorter in the acumen, becoming shorter in 1-2 rows across the insertion; alar cells few in extreme basal angles, not reaching the costa, 2-4, in 1-2 rows, extending up the margins by 1-2 cells, subquadrate to short-rectangular. Asexual propagula not seen. Autoicous. Setae (2)2.5-3(4) cm long, twisted, curved just below the urn; capsules horizontal to pendent, arcuate, asymmetric, cylindric, 1.0- 1.5 mm long, constricted below the mouth dry or moist.
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Distribution
In moist forests, rare, ca. 160 m, our only collection from a log in a small pond.
French Guiana South America|