MUSCI. (MOSSES.). (69) 669 
tate at the base, serrate eyenen: a 5 ae rocks; Alleghany 
mae (Eu.) 
4. H. Oakésii, Sulliv. (1848, adi Meni! Amer., ror n. ser. 4, p. 
tea t. 5.) Diccious stems with elongated, arcuate, subeom , distantly 
se i chlets incurved; leaves ovate-obk acuminate, 
te, semicostate, the upper half sharp i dentate ; capsul 
kand. Flora, 1849. H..Pyrenaicum, Spruce, in Ann. Nat. Hist. 
1849.) — White Mountains of New Hampshire, Oakes. — Intermediate between 
H. umbratum and H. brevirostre; larger than either. (Eu). , 
§5. THAMNIUM, Bryol. Europ.— Primary stems rhizoma-like ; secondary ones 
arcuate-erect, below leafless, above simple, flat-branched, somewhat dendroid + lea eaves 
ovate-lanceolate ; areolation minute, elliptical ; costa stout; subcontinuous : cap 
turgi : operculum rostrate 
rgid, suboval, unequal, cern : pedicels short, aggregated. 
15. H. Alleghaniénse, C. Mull. Hermaphrodite; leaves dark green, 
ee <r above, as is the costa on the back. — Rocky margins of moun- 
§ 6. BE Oe Bryol. Europ.— Main stem prostrate, small-leaved ; the 
principal branches ascending, below simple, above with an irregular fasciculate 
ramification: leaves atieedencidate, acuminate, semicostate ; areolation minute, 
linear, flecuous: capsule oblong, nearly erect, subequal ; operculum rostrate. 
6. H. myosuroides, L. Diccious; branchlets filiform, arcuate ; 
leaves ovate-acuminate, serrulate.— Trunks of trees, and rocks, in hilly dis- 
tricts : rare. (Eu.) 
§7. EURHYNCHIUM, Bryol. Europ.— Stems prostrate, extended, irregularly 
subpinnately or fasciculately branched : leaves loose or imbricating, ovate or oblong, 
acuminate, unicostate; areolation oval-rhomboidal or elongated: capsule oval, un- 
equal, cernuous : operculum conic, usually long-rostrate: pedicel smooth or scabrous 
* Pedicel rough, 
. hiams, Hedw. Diccious; grows in thin loose patches; stems 
psn slong, distantly pinn meek; branchlets short, subcompressed ; 
leaves roundish-ovate, yan spreading, loose ; costa suddenly ceasing more 
than tia. On the ground, in woods. 
. Sultivanti, nine Soya smaller than the last, with a 
Raita and mode of growth; stems somewhat firm, stolonif- 
erous ; branches ascending, subterete ; shanties elongated-ovate, those of the 
fietindchnn .caeemaenas = —_—- — decurrent, denticulate, more or 
less papillose d flexed below ; rostrum of the 
opercalam rather short. (H. adnan ( Brid. ?), Wils. § Hook. in Drum. 8. 
Mosses, No. 133.) — Woods, on the banks of rivulets, Ohio and Pennsylvania. 
* * Pedicels smooth. 
19. -_ strigécum, Hoffm. Pseudo-moneecious ; stem creeping, stolo- 
niferous ding, distichously or subfasciculately ram: 
ulose ; branchlets attenuated ; leaves crowded, spreading, cordate, unis, 
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