— 984. — 
VI. Gymnostomum. Capsule sometimes but r. with. peri- 
stome; lid deciduous not systylic; annulus often present.) Leaves 
sublinear not recurved; cells gen. subquadrate, the upper us. 
opake and very small. oiez  * 
j I. Eucladium Br. eur. Ica 
1.W.verticillaía L. — Bryum L.; Weisia C. Mueller. 
Leaves carinate brittle from short ovate base somewhat 
abruptly narrowed to the nearly subulate acumen; inner. basal 
cells much larger than the outer. Capsule brownish suboblong; 
teeth cleft or perforated. Tufts eradiculose us. encrusted with 
calcareous deposite. R. fruiting. -- Dripping calcareous or 
sandstone rocks. Eur. princ. in southern distr. not. r. Switzerl.! 
Sweden very r. Spain: Levier; Dieck, com. Roell. .Greece: 
Heldreich. Amer. r. Can.: Macoun. 
II, Pseudo-Pottia Kindb. 
A. Leaves not recurved. Peristomial teeth well-evolute more 
or less perforated; annulus distinct. Monoecious. 
2.W.exwspitosa Bruch. — Pottia C. M.; Trichostomum Jur. 
Leaves suboblong acute or short-acuminate; basal cells small 
short-rectangular; costa short-excurrent, Capsule subovate small- 
mouthed us. twice longer than the rostellate lid; pedicel yellow. 
Often loosely tufted. — Bare calcareous’ soil in warmer distr. 
r. Eur. France: Philibert; Brébisson. Germany: Schemmann. | 
B. Leaves recurved. Peristome us. imperfect or wanting; 
annulus not distinct. Paroecious. 
3.W.Starkei Hedwig. — Pottia C. M. ins 
Leaves subobovate-oblong or narrower, acute or short-acumr | 
nate, recurved nearly all around; basal cells rectangular; costa - 
gen excurrent. Capsule oval-oblong; lid short thick subconie - 
or obtuse; pedicel us. yellowish. Us. not tufted. Smaller than — 
the last. — Fallow fields and banks. Eur, not r. Sweden: | 
Hamnstrem, France: Bouvet. Greece: Heldreich. Amer. #4 
»U. S.»: Lesq. et Jam. E 
* W.Davallii Smith. — Gymnostomum Sm.; Weisia Kindbs 
Pottia minutula Br. eur. coke E 
Capsule subovate; teeth none; pedicel reddish. Leaves often | 
rufescent when old. Very small. — Eur. not r. Sweden, Swit- 
zerl.! Amer. r. »U. S.»: Lesq. et Jam. uu den 
* W.mutiea Venturi. — Pottia Vent.; Weisia Kindb. 
Leaves with subpercurrent costa. Peristome rudimentary- em 
Dolomitie rocks r. Eur. Switzerl: Mari. .biógilgq; dme 
