MUSCI. (MOSSES.) 19 
Tre IV. DICRANEZX. 
ARCTOA, Br.& Sch. (Tab. 15.) 
Calyptra cuculliform, inflated. Operculum large, obliquely rostrate. Cap- 
sule oval or somewhat turbinate, ribbed when dry, erect or inclined, annulate, 
exserted. Peristome single: teeth 16, lanceolate-subulate, cloven half-way, 
the divisions unequ nflorescence moneecious: male flower gemmiform. — 
Den rt Sean alpine — pean, & on — with — lanceolate-setee 
(Name 
from apxtos, north ; found only in Northern iatitadts: yp 
- fulvéla, Br. & Sch. Leaves fulvous, with a strong continuous — 
costa denticulate at the apex; perichetial leaves large, pert overtopping 
the capsule. — White Mountains, New Hampshire, Oakes. (Tab. 15.) (Eu.) 
11. CAMPYLOPUWS, Brid. (Tab. 15.) 
Calyptra cuculliform, fringed at the coe Operculum conic-rostrate. Cap- 
sule oval, regular or gibbous, annulate, ribbed when dry, on a decurved eH 
Peristome single : teeth 16, ecaccaxteate deeply bifid; segments u 
Inflorescence dicecious : male flower terminal. — Stems densely cxespitose, ‘dicho 
seaiaes ranched ; leaves rigid, lanceolate-setaceous, with a 
; areolation es oblong or rhomboid at the base, elsewhere much smaller 
ae cabquatines med from xapmvXos, curved, and wovs, a foot, in allusion 
to the curved alist ) (Tab. 15.) 
1. C, flexudsus, a Stems 1/—2! high, radiculose ; leaves erect-patent 
or faleate-secund ; eee aggregated at the apex of the stem, regular or gib- 
bous. — Shaded ro oa Mountain, N. Carolina. (Tab. ~ (Eu. 
2. C. ie ince Sulliv. & Lesqx. (Mase. Bor.-Amer., No 
Stems densely leaved above, claviform; leaves erect-patent, scar haeblaa! 
with a long hyaline and denticulate hair-point; costa very broad, strongly lamel- 
0 , dry woods, Raccoon Mts., Alabama, ux. 
3. C. Leanus, Sulliv. Stems fastigiately branched ; the branches termi- 
lanceolate-subulate, erect, rather secund, the costa occupying n 
io and Pennsylvania: not rare; on very much decayed stumps and logs. 
Resembles the young growth of Dicranum flagellare. 
12. DICRANODONTIUM, Br.& Sch. (Tab. 15.) 
‘orm, fringed at the base. Operculum conic-subulate. 
| exper clipieobins, tia smooth, pendulous from an arcuate pedicel. 
- Peristome single : teeth 16, linear-lanceolate, cloven to the base; their divisions 
' unequal. Inflorescence diccious: male flower gemmiform, terminal, — Habit 
and aspect nearly as in the last genus. (Name from dixpavos, fo ted, and 
sder, a tooth.) 
