Fissidens cristatus

Fissidens cristatus Wilson; Mitt. & Wils. Jour. Bot
&KewMisc. 9: 294. 1857.
? Fissidens dubius Beauv. Prodr. Aeth. 57. 1805.
? Skitophyllum adiantoides var. marginatum Pylaie, Jour, de Bot. Desv. II. 4: 163. 1814.
Fissidens circinans Schimp.; C. Miill. Bot. Zeit. 22: 340. 1864.
Fissidens decipiens De-Not. Comm. Soc. Critt. Ital. 2: 98. 1865.
Fissidens rupestris Wilson; Jaeger, Enum. Fissid. 25. 1869. (Nomen nudum.)
Fissidens floridanus Lesq. & James, Proc. Am. Acad. 14: 137. 1879.
Fissidens coUinus Mitt. Jour. Linn. Soc. 21: 559. 1885. (According to Paris.)
Plants in rather close dark green sods 1-3 cm. high; leaves numerous, overlapping, 1.5-2.5 mm. long, oblong-Ungidate to oblong-lanceolate, acute to roimded and subapiculate, bordered by a band of hghter-colored cells, ^r regularly crenulate-serrate above, the costa percurrent or nearly so; vagmant laminae about half the length of the leaf; leaf-cells irregularly hexagonal, bulgmg-mamillose, 6-10 m, afew 12 ju, bistratose in places; perichaetial leaves broadly ovate with a very small and narrow dorsal and apical lamina; dioicous; sporophyte lateral; seta 1-4. mm. long; capsule inclined to horizontal, oblong, narrowed to the seta, the mm 1-1.5 mm. long, the exothecial cells incrassate, oblong to quadrate or hexagonal; operculum long-rostrate, nearly as long as the txrn; divisions of peristometeeth strongly trabeculate with fine longitudinal and obUque lines between the nodes below, appendiculate and finely papillose at the top; spores 10-15 /x in diameter, maturmg from late autumn to winter.
Type locality: Khasia Mountains, India.
DistributionOn moist shaded soil and stones, occasionally on the base of trees; eastern North America from Nova Scotia to the Gulf of Mexico, west to the Rocky Mountains; in all the
continents of the Northern Hemisphere. , ., ^ ^ ,, tt7 t. .in