346 
__b. Acaulescent species. Autoicous. Leaves subulate, smooth, 
serrate or dentate; capsules almost sessile. 
1. Spores reticulate. (B&B. Drummondi, B. Raveneli.) 
2. Spores pitted. (4. drevifolia, B. Caroline.) 
II. TREMaToponTowE. Neck of the capsule longer than the 
spore-sac ; seta much exserted, lid differentiated but not dehiscent. 
Spores papillose. (. Bolanderi, B. longicollis.) 
III. Sportepera. Capsule without any neck, rounded at 
base, immersed on a very short seta; calyptra small apical. (B. 
palustris.) 
KEY. 
Neck shorter than the spore-sac, or equal to it; lid undifferentiated ; seta immersed — 
or slightly exserted. 
Caulescent, paroicous; seta 3-5 mm. long, exserted. 
Leaves 1-3 mm. long, subulate, awn smooth or papillose. 
Spores spinose, .025-.035 mm. ; calyptra smooth. 
\ Capsule ovoid, neck short, leaves nearly smooth. 
1, flexuosa. 
Capsule elongated, neck long; leaves subpapillose. : 
2. Sullivants. | 
Spores reticulate, .035-.045 mm. ; leaves subpapillose. 
Plants 5 mm. high, seta erect, neck large. 
3. Texana. 
Plants 2-3 mm. high, seta curved, neck contracted. 
sa. curviseta, 
Spores papillose, .032-.037 mm.; leaves papillose. 5 
5- Donnellit. 
Leaves short, smooth, not subulate, vein ending in or below the ape* 
toicous. 
Spores papillose, .030-.045 mm.; leaves ovate-lanceolate. 
6. Hallit. 
Spores pitted, .o20-.027 mm, ; leaves triangular. 
Apex acuminate, vein percurrent, capsules orange above. 
a. brevifolia. 
Apex blunt, vein ending below it, capsules brown. 
8. fusca. 
Acaulescent, 1-3 mm. high, autoicous; seta and capsule immersed. 
Spores reticulate, .025-.035 mm. ; capsules orange-colored. 
Leaves slender, serrate; calyptra smooth. af 
9. Drummondit. 
Leaves spinose-serrate ; calyptra papillose. ce 
10, Ravenelit. 
Spores pitted, .024~.027 mm., calyptra papillose. ; 
11. Caroling. — 
Neck equal to or longer than the spore-sac, lid differentiated but not dehiscent; 
long-exserted. *Spores papillose, .020-.025 mm. ; calyptra smooth. 
: Leaves short, acuminate, serrulate; neck abrupt. : 
12, Bolandert. 
Leaves short, subulate; neck tapering. - 
oe 13. longicollis. 
Neck none, the base of the capsule rounded ; calyptra small, apical. 
14. palustris. 
