120 ' BRYACE^. [Barbula. 



§ 4. Unguiculat^. Plants longer, cespitose : leaves linear- 

 lanceolate ; areolation close, minute, chlorophyllose above, 

 hyaline or yelloioish at base ; costa nahed, not prolonged 

 into a hair-point ; perichmtium sheathing : flowers dioe- 

 cious : teeth of the peristome long, closely twisted, attached 

 to a very short membrane. 



13. B. unguiculata, Hedw. In soft bright or dirty gi-een 

 tufts : leaves narrowly ovate and oblong, linear-lanceolate, 

 generally blunt at the apex or mucronate by the excurrent 

 costa, plane, concave and revolute on the borders from the 

 middle downward, carinate and flat on the borders in the upper 

 part, where the green areolation is closely papillose and indis- 

 tinct ; perichaetial leaves hyaline to near the apex : calyptra 

 narrow, long-beaked, reaching a little below the conical long- 

 rostrate straight or curved lid : capsule oblong-elliptical or sub- 

 cylindrical, regular or subincurved ; teeth purple, twisted two 

 or three times ; annulus none. — Frond. Muse. ii. 92, and Muse. 

 Frond, i. 59, t. 23 ; Bryol. Eur. t. 142, 143. Brymn unguicu- 

 latum. Dill. Tortula unguiculata. Roth ; Lindb. Trichost. 241. 



Hab. On damp black soil, along fences, on rocks, stones, etc. ; very 

 common and variable. 



A number of forms are described by authors, as Vars. cuspidata, apicu- 

 lata, microcarpa, obtusifolia, fastUjiata, etc., whose characters are indi- 

 cated by their names. Most of these, if not all, are found in N. America; 

 the last only is alpine. 



14. B. Jooriana, Muell. Loosely cespitose, small, bright 

 green, easily moistened and soft ; stems simple or with a short 

 terminal innovation : leaves slightly crispate, erect, open when 

 moistened, linear-lanceolate from a half-clasping narrowly oblong 

 more pellucid base, obtuse, acute or short-mucronate, sliglitly 

 revolute toward the base ; costa yellow, scabrous on the back, 

 excurrent ; cells of the areolation rectangular and large toward 

 the base, minutely hexagonal, very chlorophyllose, distinct and 

 scarcely papillose toward the apex ; perichajtial leaves erect, 

 long-sheathing, oblong, acuminate, not mucronate : capsule 

 erect, small, oblong, on a short reddish pedicel ; teeth very 

 slender, hair-like, split to near the base, reddish. — Bull. Torr. 

 Club. V. 49, and Regensb. Flora, Iviii. 77. 



Hab. Clayey ground, near Baton Rouge (JDr. Joor). Specimens doubt- 

 fully referred to this species by Austin are ticketed as from Port Royal, 

 S. C. [Austin). 



