74 
ished, and not at all vaginal; leaf-cells heteromorphous and not placed 
end to end, in cross-section square, the basal ceils longer and more 
inflated, and very irregular in size; costa stouter (particularly at 
the base), ete. 
T. lineare (Swartz) Sulliv. (7! vaginans, Sulliv.) has a small 
ovate-oval or -oblong capsule, with a shorter operculum, broader 
subpersistent annulus, straight (not twisted) granulose (Sulliy. 
Icones to the contrary notwithstanding) persistome, whose teeth 
are lancolate-subulate or subulate-lineal, subsimple, and more or less 
perforated, and less prominently nodulose; leaves much shorter, 
straight and appressed, with a longer (very narrow and close) areola- 
tion, and a broader and more depressed costa; the perichaetial ones 
more vaginal and convolute and much shorter pointed; it also 
grows exclusively on the ground. 
fT. heteromallum, Lindb. (TZ. Sullivanti, Aust. Ms., 1872.—7. 
~ vaginans, Sulliv, & Lesqx. Muse. Exsic, ed. 2, n. 154.) This fine and 
distinct species is nearest to 7: lineare, and in size and general 
Appearance somewhat intermediate between it and 7! tortile. How- 
ever, it is readily distinguished from the former by its rather longer 
and less appressed leaves, with much shorter cells and thicker inter- 
stices, and a narrower and more terete costa; and by its rather 
longer and narrower ovate or conic-cylindrical capsule, with a very 
narrow peristome, composed of nearly filiform, erect, parallel, almost 
always simple and entire, and still more faintly granulose teeth, and 
a narrower annulus. The perichetial leaves also differ in being 
rather less convolute, and in having a rather less abrupt, longer and 
more acute apex. This species occurs in great abundance along 
highways and by-ways in the White Mountain region of New 
Hampshire, extending into the mountains far above the limit of trees. 
_, Syrrhopodon? Rauei, x. sp —Dioicus; flos mase. gemmifor- 
mis, versus apicem caulis lateralis sed non axillaris; caule procum- 
bente subflexuoso simplici et subramoso, foliis e basi erecta subsemi- 
vaginanti ovato-lanceolata subpatentibus undique vergentibus 
leniter flexuosis siccitate paulum crispabilibus lineali-subulatis con- 
cavo-canaliculatis, margine plano lenissime incrassatove (rarissime 
anguste recurvo) inferne eroso ac superne subserrato, dorso versus 
apicem scabriusculo, costa valida limitibus supra inconspicuis per- 
currente lamellato-striatula, reti minutissimo opaco quadrato basi- 
lari (extremo excepto) vix ancto ad angulos cellulis multis (limi- 
tibus obscuris) duplo triplove majoribus ovalibus paulum inflatis de- 
mum subfuscis pellucidis instructo ; colore atroviridi : pl. fem. ignota. 
On shaded rocks in the mountains of Pennsylvania, ‘ along 
Stony Brook,” Rau, (Associated with Jungermania albicans, var. 
taxifolia and J. setacea.) Stems about an inch, and leaves 14-2 
lines long; the latter usually rather suddenly narrowed 1-1 way 
above the base into a subulate-lineal, thickish, deeply canaliculate 
(scarcely carinate) point, which is slightly scabrous and irregularly 
serrate above, and is chiefly occupied by the stout costa; the 
expanded portion is very minutely and obscurely erose-serrate above 
the middle. The plant is of an uncertain generic character; it ma 
possibly be a Didymodon. The only moss known to me with 
' 
