Trichodon

Schimper

Coroll. Bryol. Eur., 36. 1856 ,.

Etymology: Greek trichos, hair, and odon, tooth, alluding to slender divisions of peristome
Treatment appears in FNA Volume 27. Treatment on page 459. Mentioned on page 443, 444, 467.

Plants scattered or in loose tufts, light to yellowish green. Stems 0.2–0.4 cm, simple; rhizoids at base, papillose. Leaves slightly contorted when dry, subulate, tubulose, base broad and sheathing; margins plane or incurved, serrate to enlarged portion of leaf base; costa percurrent to excurrent, filling distal part of subula, strongly prorulose on abaxial surface; medial laminal cells rectangular, sometimes quadrate and irregularly angled on margins, smooth or prorulose. Specialized asexual reproduction sometimes present, as smooth, round or irregularly shaped tubers on rhizoids. Sexual condition dioicous; male and female plants about the same size; perichaetial leaves not differentiated. Seta yellow to red, elongate, erect. Capsule erect to inclined, exserted, yellowish to reddish-brown, cylindric, slightly curved or sometimes straight, smooth; annulus of 1–3 rows of large cells, deciduous; operculum conic to short-rostrate; peristome single, teeth 16, divided nearly to base to form two filiform segments, papillose. Calyptra cucullate. Spores globose, minutely papillose.

Distribution

North America, Europe, Asia in boreal and arctic areas

Discussion

Species 2 (1 in the flora).

... more about "Trichodon"
forming a marginal border +  and not differentiated +
Robert R. Ireland Jr. +
Schimper +
cucullate +
yellowish;reddish-brown +
straight +  and curved +
cleistocarpous +
erect;inclined +
cylindric +
subpercurrent +
shortrectangular +  and isodiametric +
North America +, Europe +  and Asia in boreal and arctic areas +
Greek trichos, hair, and odon, tooth, alluding to slender divisions of peristome +
curved +  and straight +
subulate +
dioicous +  and sexual +
angled +, quadrate +  and rectangular +
conic +  and short-rostrate +
on short branches +  and axillary +
enlarged +
filamentous +
Coroll. Bryol. Eur., +
ireland1978a +
papillose +
yellow;red +
elongate +
globose +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
percurrent +  and excurrent +
Trichodon +
Ditrichaceae +
papillose +
divided +
irregularly--shaped;round +
specialized +
synoicous +, paroicous +, autoicous +, dioicous +  and sexual +
in loose tufts +  and scattered +
light +  and yellowish green +
female +  and male +
small +  and medium-sized +