Pilotrichum

• Authority

  Buck, William R. 2003. Guide to the plants of central french Guiana. Part 3. Mosses. Mem. New York Bot. Gard. 76: 1-167.

• Family

  Pilotrichaceae

• Scientific Name

  Pilotrichum

• Description

  
  Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead in /home/emu/nybgweb/www-dev/htdocs/science-dev/wp-content/themes/nybgscience/lib/VHMonographsDetails.php on line 179
  

  Genus Description - Plants small and slender to robust, in dull or lustrous, green to golden to bronzy, often small patches; stems creeping, leaves often eroded or naked or with small scale-like leaves, the primary branches erect to pendent, pinnate, irregularly pinnate to regularly bi- to tripinnate, not complanate-foliate, in cross-section with a sclerodermis. Primary branch leaves fairly crowded, scarcely or distinctly contorted when dry, squarrose to erect, mostly erect-spreading to spreading when moist, lanceolate to ovate, acute to acuminate, sometimes asymmetric, sometimes plicate, seldom undulate, often concave; margins subentire to serrulate, plane or incurved, sometimes narrowly recurved, elimbate; costa double, usually ending 3/4 the leaf length to subpercurrent, often crested; cells mostly short-rectangular, mostly prorulose, usually firm- to thick-walled, usually porose, becoming oblong toward the insertion; secondary (and tertiary) branch aves squarrose to erect, sometimes ± contorted when dry, broadly ovate to lanceolate, acute, apiculate or acuminate, often concave, with costa ending mg ca. 1/2 the leaf length to subpercurrent, diverging throughout or parallel above, tapering toward apex or not, often crested with cells ± isodiametric to oblong, usually prorulose at upper ends, often thick-walled, sometimes porose, becoming longer ar insertion, usually more thick-walled and porose. Asexual propagula often on costae or leaf bases, uniseriate, usually brown, slightly roughened. Dioicous or rarely synoicous. Setae short, rarely exceeding 2 mm, often stout, smooth; capsules exserted or rarely immersed, erect, ± ovoid to cylindric, symmetric; exostome teeth on the front surface with a straight or obscurely zig-zag median line, spiculose throughout; endostome with a low basal membrane, segments narrow, keeled, not or narrowly perforate, about as long as or shorter than the teeth, cilia mostly none, rarely rudimentary. Calyptrae mitrate, lobed at base, naked or hairy, smooth.

• Discussion

  This neotropical genus of 20 species was monographed by Crosby (1969).