shorter. — On dry rocks. Var. set6susi : branches more elongated and slender ;
leaves attenuated, of a yellowish silky hue. — Base of trees, in dry places.
* * Pedicels rough,
59. I I . I’l l t c l b u l l i n ] , L. Monoecious; stems 3 '- 5 ' long, prostrate or
arcuate, with an irregular ramification ; branches ascending ; leaves pale green,
broadly ovate and ovate-lanceolate, concave, serrulate, thin, shining, substriate
only when dry, costate above half-way ; capsule oval or oblong-ccrnuous ; annulus
large ; perichætial leaves recurved ; vaginula emergent, pilose : a large
species. — On the ground, in wet and springy places. (Eu.)
60. H . l> lu iiB Ó S um , L. (Bryol. Europ.) Monoecious; stems 3 '- 4 '
long, creeping branches ascending, ramulose ; leaves yellowish-green or reddish-
brown, ovate aud deltoid-ovate, with a short ratlier oblique point, serrulate above,
scmicostatc, estríate; capsule gibbous, oval, inclined; annulus narrow; only
the upper half of the pedicel scabrous. (H. pseudo-plumostim, Brid., Mull. ;
also H. chrysostomum, Michx.) — Alleghany Mountains. (Eu.)
61. I I , p o p i i i e i i i n , Hedw. Monoecious; stems 2 '- 3 ' long, irregularly
branched; branches ascending or arcuate; leaves gradually and narrowly lanceolate,
acuminate, serrulate above; the costa continuous; capsules numerous,
small, roundish-ovate, suberect ; a small species, with yellowish silky foliage.
(H. refiexura, James in Proceed. Acad, Philad., 1855.) — Eocks and trunks of
trees, in hilly districts. (Eu.)
62. IS . F e n d l e r i , Sulliv. (Muse. Bor.-Amer. No. 334.) Polygamous
(stamiuate, pistillate, and heimaphrodite flowers on the same plant) ; stems
l ' - 2 ' long, creeping; branches erect, simple or ramulose; leaves ovate-lanceolate,
seiTulatc, semicostate ; capsule oval-oblong, suberect, rarely unequal aud
inclined ; ciliolæ of the peristome rudimentary or absent ; opcrctüum conic, with
a short obtuse rostrum ; pedicels slightly scabrous below, smooth above : resembles
the European H. velutinuin, L. (Leskea Eendleri, Sulliv. in Mem. Amer.
Acad. n. ser. 4=,p. 170, t. 1.) —Dry rocks, Santa Ec, New Mexico, Fendler.
63. I I . r e f l é x i im , Starke. Monoecious; stems procumbent, filiform, 2 '-
3' long; branches crowded, slender, arcuate; leaves rather distant, decnrrent,
broadly or deltoid-ovate, suddenly and narrowly lanceolate, spreading a t their
point, scrnilate, heavily costate to the apex ; capsule globose-ovate, horizontal.
(H. subtenue, James, I. c.) —Rocks, and base of trees. White Mountains of New
Hampshire, Oakes, James. (Eu.)
64. I I . S t u r k i i , Web. & Mohr. Monoecious ; resembles the last species ;
but is much larger, and has a slenderer costa extending about half-way up the
leaf. — White Mountains of New Hampshire, Oakes. (Eu.)
65. I I . r i v u l i i r c , Bryol. Europ. Distinguished from H. rutabulum by
its somewhat larger size, more rigid stems, firmer, wider, shorter, and more suddenly
acuminated leaves, with a heavier costa, papillose pedicels ( !' -1 ^ '
and essentially by its dioecious inflorescence. — Wet rocks, mountains of New
England and of Pennsylvania. (Eu.)
66. 1 1 . N o v oe -À n g l iæ , Sulliv. & Lesqx. (Muse. Bor.-Amcr. No. 338.)
Dioecious; stems long, rather stiff; main divisions arcuate-ascending,
irregularly pinnate and, like the branchlets, subjulaceous ; leaves patent-incurved,
widely cordatc-ovate, with a short abrujjt point, dccurrent, very concave,
slightly striate, serrulate, the costa vanishing beyond the middle ; capsule oblong,
oblique, slightly incurved, narrowly annulate ; operculum elongated-conic,
scarcely rostrate ; pedicels 6 " - 7 " long; perichætial leaves filifoimly attenuated.
— Mountains of New England, Oakes, Frost, James, Eaton. — Approaches the
last species ; but that is twice as large, and has more elongated, spreading,
membranous, plicate, distant, and less concave leaves, with a more glossy surface.
The growth, ramification, and operculum separate it from II. hians.
§ 18. CAMPYLIUM, Sulliv. — Stems prostrate, with an irregular, crowded rami-
Jication, or ascending and fastigiately branched: leaves suddenly long-acuminate
from a broadly ovate base, subsquarrose, scarcely costate, scarious ; areolation minute,
linear, flexuous : capsule subcylindrical, erect-cernuous: operculum convex-conic.
67. II. s t c l l à t u a n , Schreb. L)ioecipus ; stems ascending, fastigiatcly
branched, 3 '- 4 ' Iiigh, rather stout; leaves deltoid-ovate, long-acuminate, entire,
ecostate, the margins reflexcd below, the basal angles excavated and furnished
with large diaphanous cellules. —Bpgs and marshes : grows in compact turfs.
— Emit rare : foliage yellowish, shining. (Eu.)
68. Ï Ï . p o ly i l l i o r p ln iB l l , Bryol. Europ. Dioecious ; a more slender
species than the preceding ; stems procumbent, subpinnatcly ramulose ; leaves
cordate-ovate at the base, entire, less squarrose, unicostatc half-way ; without
diaphanous cellules at the basal angles. — Moist and shaded clayey banks. (Eu.)
69. IS. Brid. Monoecious, much smaller than the last;
stems prostrate ; leaves not so crowded, nor so long-acuminate, obscurely bicostate
at tbe base; the margins minutely dentate. — Dry places, at the base of
trees, or on the ground ; rocky liill-sides : fonning close bright-green mats.
§ 19. IIETEROCLÀDIUM, Biyol. Eui'op.— Stans prostrate, divided, radiculose,
sparingly villous, irregularly and suhpinnately ramulose : leaves o f two forms ;
the cauline larger, ovate-lanceolate, squairose ; the ramuline roundish-ovate, obtuse,
suberect ; all denticulate and obscurely bicostate at the base, more or less papillose ;
central areolæ larger, oblong-hexagonal, the marginal subquadrate : capsule oblong,
cernuous : operculum conic, obtuse or slightly rostellate.
70. I Ï . Brid. Dioecious; stems l ' - 2 ' long, filiform,
rigid, fragile, with minute, opaque, dark green and lustreless leaves. — Dry
shaded rocks, Ellis River, White Mountains of New Hampshire, James. (Eu.)
§20. AMBLYSTÈGIUM, Bryol. Europ. — Stems creeping, much and irregularly
branched : leaves erect-patent, rarely bifariously directed, ovate and ovate-lanceolate,
mostly entire; areolation hexagonal-rhomboidal; costa variable: capsule
oblong or cylindrical, more or less curved : opo'culum convex-conic.
71. IS, S B tb tilc , Hoffm. Monoecious; branches crowded, erect; leaves
distant, ovate-lanceolate, acuminate, ecostate, spreading or slightly secund, with
a loose areolation ; capsule ohiong, suberect or slightly cernuous ; operculum
large, apiculate ; the basal membrane of tlic internal peristome nanow; ciliolæ
absent. — Trees, New England. — A very minute species. (Eu.)
57*