a 060 a 
acuminate, often obtuse; costa abbreviate or scarcely pereurrent, 
Capsule exserted; pedicel nearly immersed. Spores as in the 
last. — Amer, r. »U. S.»: Mrs Britton. í 
41.B.Hallii Austin; Britton 1. c. 
Upper leaves subovate very short-acuminate acute; costa per- 
current. Capsule. wholly exserted; pedicel nearly emergent at 
apex. Spores large papillose. — Amer. r. »U. S.»: Mrs E. G. 
Britton. IE 
b. Leaves long-acuminate. Spores somewhat large, us. very 
papillose. i 
12.B.texana Austin; Britton l. c. — B. flexuosa var. nigricans 
Sull. l. c. 
Upper leaves.from ovate-oblong base abruptly subulate-acu- 
minate, entire. Capsule wholly exserted, longer than the thick 
neck; pedicel subemergent. — Amer. U. S.: com. Macoun. 
* B.Donnellii Austin; Lesq. et Jam. 
»Leaves sinuolate above, sometimes faintly papillose. Pedicel 
often emergent. — Amer. r. U. S.»: Lesq. et Jam. 
* B.Sullivantii Austin; Lesq. et Jam. — B. flexuosa Sull.1. c. 
in. part. i i 
Capsule partly emergent. Spores larger, more papillose. — 
"Amer. r: »U. S.»: Sullivant. 
13.B.flexuosa Schw:egrichen. — Phaseum Schw.; Bruchia C. M.; 
B. Beyrichiana Sull. 1..c. 
Upper leaves from ovate-oblong base nearly gradually narro- 
wed :to the linear- subulate by the (not excurrent) costa nearly 
filled acumen. Capsule oval piriform without distinct neck, 
partly emergent; pedicel not shorter. — Amer. r. U. S: Lang- 
lois, com.. Cardot. 
A 161. Pleuridium Bridel. 
| As Monoecious with gemmiform male flowers. 
a. Branches julaceous. Leaves obtusate or short-acuminate; 
upper cells small rhomboidal. : 
1.P.Sullivantii Austin. — »P. nervosum» Sull. icon. m., non 
Brid. , ; ji 
Leaves subovate crowded: upper with thick excurrent costa, 
perichetial abruptly acuminate much larger. Capsule broad-oval 
thick-pointed; pedicel nearly half as long. — Amer. x. »U. S.»: 
Sullivant. 4 
b. Branches not julaceous, Leaves long-acuminate; the upper 
larger; cells rectangular. - A aw : b ba 
