MUSCI. (MOSSES.) (35) 635 
33. MACROMITRIUM, Brid. (Tab. IL) 
alyptra large, conic-mitriform, longitudinally plicate or sulcate, more or less 
laciniate at the base, hairy or glabrous. Operculum subulate-rostrate from a 
‘Capsule erect-ovate, oval or oblong, long-pedicellate. Peristome 
double or single, sometimes wanting ; the exterior 16 teeth lanceolate, usually 
in pairs ; the interior a more or less osemrane membrane, truncate cut to the 
base into 16 or more cilia. — Stems creeping ; branches erect, est, fertile 
at their summit; leaves latelate-bons, continuously costate, with a dense 
and minute dot-like areolation above, enlarged rectangular and pellucid below. 
(Name from paxpés, long, ssi purpiov, a veil, referring to the very large calyptra.) 
régei, Hochstetter? Stems slender, 1/-2! long, creeping, sub- 
pinnately branched; branches short, erect; leaves aun Shey sors ovate- 
ase, cana- 
i} 
° 
i=] 
E. 
3 
= 
liculate part oo oval-oblong ; rece sinh nee exterior -waitting|, a 
short tru yp f Jonah Mountain, Georgia, 
Lesquereux ; on the bark of old pine-trees. — Wo sas seen Cape of Good Hope 
specimens a sea identical with ours, referred doubtfully to M. tenue and 
M. Dregei. (Tab. IL.) 
34. SCHLOTHEIMIA, Bri. (Tab. IL) 
Calyptra large, conic-mitriform, scabrous at the apex, with 4 or more inflexed 
lobes or appendages at the base. Operculum conic-subulate. Capsule subcy- 
lindrical, rect, pedicellate. Peristome double; the exterior 16 teeth in pairs, 
linear-lanceolate (when dry revolute) ; the interior 16 or more irregular cilia. — 
the ferruginous or reddish-brown color usually predominant in their folia: 
(Named for Count Schlotheim.) 
1. S. Sullivantii, C. Mull. Moncecious; branches short; leaves very 
crowded, ovate-oblong, obtuse, gents rugose-undulate above, the costa ceas- 
ing below the point. — Grows in compact, rigid, dark-brown mats, on trees. — 
Lower portion of the Southern States. (Tab. II.) 
Trine XIV. PTYCHOMITRIEZ. 
35. PTYCHOMITRIUM, Br. & Sch. (Tab. IL) 
Calyptra campanulate, plicate, deeply laciniate at the base. Opereulum conic- 
sule oval 
neecious. — Perennial plants, growing on —— and trees: in habit and aspect 
intermediate between Orthotrichum and Grimmia. — (Name from mrvé, mrixos, 
a Ae and purpior, a veil, referring to the wens calyptra. 
1, P. incarvam, Schwegr. Stems 2/-3!! high, aggregated ; leaves 
crowded, oblong, ligulate, spreading, aes, incurved at the obtuse and some- 
what cucullate apex, concave, costate nearly to the point, of a rather thick tex- 
