Grimmia tenuicaulis R.S.Williams
-
Authority
New York Botanical Garden. Herbarium of Dr. Per Axel Rydberg. Purchased, 1899. Contributions from the New York Botanical Garden.
-
Family
Grimmiaceae
-
Scientific Name
-
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
Species Description - In compact tufts up to 6 cm. high. Stems very slender, often thread-like, with few simple, mostly short branches: perichaetial and upper stem leaves rather broadly ovate-lanceolate, concave, revolute on borders, blade 1 1/3 mm. long, with rough hair point about 2/3 blade in length, the papillae of point spreading, often recurved: moistened leaves erect-spreading: upper cells irregular, somewhat transversely or vertically elongated, mingled with rounded cells .004—006 mm. in diameter: cells toward base more or less elongated rectangular, those near margin from nearly quadratic to twice longer than broad, towards costa becoming 2-4 times longer than broad: cells apparently never distinctly sinuous walled: sections of leaf show costa with two large cells on ventral side and two rows of somewhat smaller cells on dorsal side: lamina of leaf is of one thickness of cells, usually wnth one or two rows doubled near costa, or sometimes somewhat distant from costa, but not doubled in margin: occasionally the leaf is hyaline nearly ¼ down from apex, the hyaline cells always elongated: evidently dioicous: sporophyte not seen.
-
Discussion
Specimens of type collected near Neihart, Belt Mts., Mont., Sept. 21, 1 89 1, also obtained at Marsh Lake and Dawson on the Yukon River.