616 MUSCI. (MOSSES.) 



ropean, and the point is more strongly serrulate : the capsule also is inclined to 

 an oval shape. (Eu.) 



11. P. subulatuin, Schreb. Very much like the last, but the base of 

 the leaf not so suddenly dilated, more lanceolate, the point not so serrulate; ca- 

 lyptra smaller; the antheridia naked in the axils of the perichsetial leaves. 

 Pennsylvania and Rhode Island : rare. (Eu.) 



12. P. palustre, Br. & Sch. Distinguished from the last two species 

 mainly by its campanulate-conic calyptra 4 - 5-lobed at the base : inflorescence 

 as in No. 11. Sandy soil, New Jersey, James. Louisiana. (Eu.) 



13. P. Bicrvosiim, Hook. Upper leaves more or less obovate-oblong, 

 densely areolated above, serrate at the apex of the lamina, with a broad, long- 

 excurrent costa; the lower leaves much smaller, oblong, acuminate, closely 

 appressed ; capsule ovate ; pedicel short ; calyptra cuculliform ; male flower 

 gemmiform at the base of the fertile stem. Pennsylvania, Drummond. 



6. ASTOMUM, Hampe. Stems simple or branched, perennial: leaves elon- 

 gated, costate, the terminal much larger, with a. loose, hyaline areolation below; 

 above minute, subquadrate, granulose : calyptra cuculliform: capsule globose or 

 ovate, more or less rostellate. (Allied to the Weisieae.) 



* Male flower gemmiform, axillary. 



14. P. crispum, Hedw. Stems divided above, bearing several capsules 

 on each branch ; leaves crisped when dry, shortly cuspidate by the strong ex- 

 current costa, the lower ovate-lanceolate, the upper linear-lanceolate from an ob- 

 long base, the margins above strongly convolute ; capsule globose, apiculate, 

 with a more or less obscure operculation. It is uncertain if the species is truly 

 American ; but specimens (imperfect) from Texas and Indiana appear to belong 

 to it. (Eu.) 



15. P. Sllllivaillii, Schimp. Resembles the last, but has shorter stems, 

 not so much branched ; capsule solitary, shining, bright orange-colored ; calyp- 

 tra and spores smaller. Very common. 



16. P. nitidlllum, Schimp. Near No. 15, but a smaller species, with 

 a shining, pale chestnut-colored, oval, obliquely rostellate capsule, its pedicel 

 thrice as long as in the last ; calyptra minute, scarcely descending to the obscure 

 line of operculation. Central Ohio : rare. 



fr % Male flower gemmifbnn, terminal on the main stem or its branches. 



17. P. L.llclOVlCiaillIIIl, Sulliv. Larger than No. 14 ; leaves very 

 much the same in every respect ; capsule oblong-oval, obtusely rostellate, usu- 

 ally 2-3 in the same perichajth, borne on a branch arising from below the male 

 flower. (P. crispum, var. rostellatum, Schwccgr.? Hook, <f~ Wils. in Dram. 2d 

 Coll., No. 10.) New Orleans, Drummond. 



5. BRIT CHI A, Schwaegr. (Tab. 15.) 



Calyptra mitriform, lobed at the base. Capsule obovate or oblong, rostellate, 

 pedicellate : collum large. Coltimella present. Spores numerous, usually 

 yellow, muriculate. Inflorescence moiwecious : male flower gemmiform, term,- 



