MUSCI. (MOSSES.) 36 
33. MACROMITRIUM, Brid. (Tab. 16.) 
Calyptra large, conic-mitriform, email plicate or suleate, more or less 
laciniate at the base, hairy or glabrous. QOperculum subulate-rostrate from a 
tonic base. Ca apsule erect-ovate, sai or oblong, long-pedicellate. Peristome 
double or single, sometimes wanting ; the exterior 16 teeth lanceolate, usually 
mb 
base into 16 or more cilia. — Stems creeping ; branches erect, crowded, fertile 
at their summit; leaves ations ementerd costate, with a dense 
and minute dot-like areolation above, enlarge d rectangular and pellucid below. 
(Name from paxpés, long, we #Tpiov, a veil, referring to the very large aie) 
régei, Hochstetter ? sin slender, 1/-2' long, creepin 
pinnately branched ; branches s rect; leaves crowded, erect-patent, pres: 
lanceolate, papillose, recurved on et margins, ventricose-concave at , cana- 
liculate above; capsule oval-oblong; peristome single (the exterior waning} 
short truncate membrane ; calyptra hairy. — Top of Jonah Mo ountain, Georgia, 
Le n the bark of old pine-trees. — We have seen Cape of Good Hope 
specimens epanciity identical with ours, referred doubtfully to M. tenue and 
M. Dregei. (Tab. 16.) 
34. SCHLOTHEIMEA, Brid. (Tab. 16.) 
Calyptra large, conic-mitriform, scabrous at the apex, with 4 or more inflexed 
ode of growth, habit, and structure of leaves very much as in the last genus : 
both genera being the tropical analogues of Orthotrichum, and remarkable for 
the i aoe or reddish-brown color usually predominant in their foliage. — 
(Named ount Schlotheis 
i. S. oo C. Mull. Moneecious; branches short; leaves very 
crowded, ovate-oblong, obtuse, apiculate, delnonib anchuline above, the costa ceas- 
ing below the point. — Grows in compact, gi dark-brown mats, on trees. — 
wer portion of the Southern States. (Tab. 1 
Tre XIV. PTYCHOMITRIES. 
35. PT YCHOMITRIUM, Br. & Sch. (Tab. 16.) 
Calyptra campanulate, plicate, deeply laciniate at the base. Operculum coni 
subulate. Capsule oval, erect, annulate, pedicellate. Peris na single: teeth 
16, perforated or fissile into two unequal filiform segments. Inflorescence mo- 
necious. — Perennial plants, growing on rocks and trees: in habit and aspect 
intermediate between Orthotrichum and Grimmia. — (Name from mrv&, rriyou, 
a fold, and perpior, a veil, referring to the plicate calyptra.) 
1. P. incarvum, Schweer. ms 2/'-3! high, — — 
crowded, ohio. aah shige ss meres at the obtuse 
what cu t, of a rather perc a 
