— 403 — 
often percurrent. Capsule globose obtusely apiculate; pedicel 
short or indistinct. Stem often finally branching. — Wet 
clayey soil r. Amer. U. S.: Sullivant, com. C. Mueller. 
2. A.Hampei Limpricht (»Physcomitrella patens + Physcomitrium 
sphericum»). -— Physcomitrella Limpr.; Aphanorhegma Kindb. 
Calyptra as in the last. Capsule oval with short conic point, 
pedicel not much shorter. Leaves as in Physcomitrella. — Eur. r. 
»Germany»: Limpricht. 
Fam. 38. Phascacee. 
| 169. Phaseum L. 
A. Leaves close to an head-like bud, us. smooth and ser- 
rulate. 
L  Aeaulon. Capsule immersed globose not or indistinctly 
mamillate; calyptra very short mitriform. Leaves us. serrulate 
at the mostly recurved borders; costa r. long-excurrent, Mon- 
oecious with distinct male flowers. Plants minute. 
B. Leaves not densely close, us. papillose and entire (or 
faintly sinuolate). : 
a, Capsule not rostrate. 2, 
II. Asehisma. Capsule immersed subglobose apiculate; ca- 
lyptra broad short submitriform, often cleft at one side. Leaves 
papillose involute; costa subpercurrent. Monoecious with distinct 
male flowers. Plants minute. 
HI. Eu-Phaseum. Capsule often exserted, oval-globose api- 
culate or r. mamillate; calyptra us. broad subcucullate or r. 
mitriform. Leaves us. papillose often reflexed; costa excurrent. 
Paroecious. Stem often distinct. 
b. Capsule obliquely rostrate. 
IV. Mildeella. Capsule sometimes exserted, suboval or r. 
globose; calyptra narrow cucullate. Leaves mostly papillose; 
costa gen. long-excurrent. Monoecious with distinct male flowers, 
or dioecious. Stem distinct. 
| I. Acaulon C. Mueller. 
A. Leaves smooth; costa complete. 
a. Leaves concave; costa subpercurrent. verra 
1.Ph.mutieum Schreber. — Acaulon C. M; Spherangium 
Schimper. 1 
Upper leaves subovate acute or short-acuminate; borders re- 
curved (sinuolate or serrulate) above; costa short-excurrent or 
pereurrent. Inner perichetial leaves of same length, not wholly 
convolute, us, serrulate and much longer than the short-pedi- 
