— 261 — 
short-rectangular; costa not excurrent. Perichetial leaves con- 
 volute. with short broad obtuse point; costa not excurrent, — 
Capsule suboblong; lid rostellate; teeth ^ half-twisted with 
. patent points when dry; annulus broad. Tufts dense. Habit 
. of Ceratodon. —- Sterile siliceous places r. Hur. Mediterr. distr. 
. Italy: Areangeli. France: Goulard. i00] . 10 
. €. Leaves entire not or indistinctly reflexed. Stem very short. 
aa. Leaves papillose. Peristome rudimentary or wanting: 
 64.B.bieolor Br. eur. — Gymnostomum Br. eur; Barbula 
. Lindb. 5: He 
. "Leaves ovate-lanceolate acuminate acute marked with orange 
Stripes at base; basal cells short-reetangular yellow or brown- 
_ yellow; costa’ pereurrent or short-excurrent. Capsule oblong- 
. eylindric plicate when dry; annulus revoluble. Spores large. 
. Tufts dense. Dioecious. — Crevices of calcareous rocks in 
_ higher alp. reg. r. Eur. Switzerl: Schimper; Culmann. 
= bb. Leaves gen. smooth. Peristome much contorted. 
 05.B.agraria Hedwig. — Bryum Swartz.: ` 
— Leaves subovate acute subinvolute, slightly twisted when dry; 
cells rhombie-quadrate somewhat large; costa subexcurrent. 
erichetial leaves broader, short-acuminate or. obtusate, not 
wholly convolute; costa not percurrent. Capsule narrow-c lin- 
dric; lid nearly as long; annulus revoluble. Stem nearly indi- 
stinct. Monoeċious. -— Rocks and sand r. Amer. »U. 8.»: 
Lesq. et Jam. (Cuba! Wright, herb. Sullivant, com. C. Mueller; 
S:t "Thomas: Breutel, com. Roell). di 
66.B.Raui Austin. : 
»Leaves smooth spathulate-ovate acuminate or apiculate; 
basilar areolation loose; costa subexcurrent. Perichetial leaves 
convolute often blunt; costa thin. Capsule oblong:cylindrie 
Plicate when dry; lid long; annulus narrow. Dioeeious. — 
Rocks r. Amer. U. 8.»: Lesq. et J. 
67.B.Joorii C. Mueller in Flora 1875. IW Ed 
»Leaves nearly smooth from oblong half-sheathing base linear- 
lanceolate obtusate mucronulate, faintly crisped; basal ells 
short-rectangular hyaline; costa excurrent. Perichetial leaves 
from oblong sheathing base acuminate not mucronate. Capsule 
oblong; teeth rufous; calyptra rough.  Dioecious. Habit of 
B, unguiculata; Stem very short. — Amer. r. U: Sui C. M: 
-~ 8. Leptobarbula Schimper. PO 
68.B.tenuis Hedwig. — »Trichostomum Hedwig»: €: M.; Bar- 
bula Kindb.; Didymodon bericus Notaris. tbi 
