4. A* m i l l t i i i d a , Dumort. Fronds prostrate, 2-pinnately divided; the
divisions linear, narrow ; whole plant brownish-green. — Alleghany Mountains,
on moist, rocky banks. (Eu.)
15. S T E E T Z I A , Lehm. (Tab. VI.)
Involucre a t first terminal, arising from the midrib of the frond, at length by
tho growth of the frond dorsal, cup-shaped, short, lacerate. Perianth elongated-
tubular; tho mouth denticulate. Calyptra equalling the perianth, irregularly
torn at tlio apes. Capsule oval. Elaters filiform, free, with two fibres. Inflorescence
dioecious. Antheridia dorsal on the midrib, covered by minute fimbriated
perigonial leaves. Frond with a distinct midrib. (Named for Dr. J. Steetz,
a German botanist.)
I. S. Lyéllii, Lehm. Frond simple or 2-cleft, delicate in texture, oblong-
linear, tho margin slightly waved, entire or obscurely serrate ( l ' - 4 ' long, 3 " -
5" wide). — On tho ground, in wet or springy places. ( Tab. VI. ) (Eu. )
1 6 , P É E E I A , Raddi. (Tab. VII.)
Fractification proceeding from the back of tho frond near the apex. Involucre
cup-shaped, short; the margin lacerate. Perianth none. Calyptra oval,
membranaceous, longer or shorter thau the involucre. Capsule globose. Elaters
long, free, with two fibres. Inflorescence moncecious. Antheridia globose,
immersed in the upper smface of the broad indeterminate midrib of tho frond.
(A personal name.)
1. P . e p i p l l ÿ l l a , Nees. Frond rather membranaceous, sparingly divided
; its divisions oblong, somewhat wedge-shaped, repand-lohed ; calyptra
exserted. — Moist, shady places, on the ground, fonning patches 2 ° - 3 ° broad.
(Tab. V n .) (Eu.)
1 7 . B E À S I A , Mich. (Tab. VIL)
Fructification in an oval cavity in the midrib of the frond. Involucre none.
Perianth a fusiform utricle, vanishing early. Calyptra obovate. Capsule oval-
globose, bursting through the frond near its apex. Antheridia immersed in the
frond and covered by dentate scales. Gemmæ globose, issuing by a slender ascending
tube from their large flask-like receptacles, which arc immersed m the
frond. — (A personal name.)
1. B . p u s i l l a ^ L. Frond 7 " -1 2 " long, 2 " - 3 " wide, iinear-obovate,
simple or forked, or stellatcly expanded, the margins pinnatifidly sinuous. — On
the groimd, sides of ditches, &c.. New York. (Tab. VIL) (Eu.)
H. Vegetation foliaceous (i. e. leaves and stem distinct).
* Leaves succubous ; th e apex o f each le a f lying u n d e r the base of th e next.
18. FO S SOM BR O N IA , Eaddi. (Tab. VH.)
Perianth termmal, or by innovation dorsal on the main stem, snbcampanulate ;
the mouth large, crenate-lobed. Involucral leaves 5 - 6 , minute, subulate, cohcrent
with tho perianth. Calyptra pear-shaped, rupturing early. Capsule globose,
irregularly 4-vaIvcd. Elaters short, containing two or three spiral fibres.
Antheridia naked, borne on the back of the stem, which is prostrate, and
either simple or forked, with somewhat quadrate 3 -5-lobcd undulate flaccid
leaves. (A personal name.)
1. F . p u s i l l a , Nees. S tem 6 " -1 0 " long, thick; perianths conspicuous.
— Moist places on the ground: mostly Southern. (Tab. V II.) (Eu.)
19. GEOCAEYX, Nees. (Tab. VH.)
Perianth none. Involucre oblong, saccate, truncate, fleshy, attaclied by one
side of its mouth to tho stem, pendent. Calyptra membranaceous, partly connate
with the involucre. Capsule oblong. Elaters with two spiral fibres. Antheridia
on spike-like lateral branches, in the axils of small perigonial leaves.
(Name formed of yea, the earth, and KoKv^,flower-cup; from the fructification
bcooming subteixanean.)
1. G . g r a v e o l e m s , Nees. Leaves ovate-quadrate, 2-toothed (light-
green) ; amphigastria oval-lanceolate, 2-cleft to the middle; perianth subterranean.—
On the ground, rotten logs, &c. (Tab. V II.) (Eu.)
20. C H IE O SC V PH E S , Corda. (Tab. VII.)
Fructification terminal upon a short lateral branch. Involucral leaves 2 -6 ,
different from and smaller than the stem-leaves. Perianth usually short, deeply
2 -3-cleft. Calyptra globose, or somewhat club-shaped, slightly chartaceous,
often longer than the perianth, rupturing irregularly at the apex. Capsule oval.
Elaters with two spiral fibres. Perigonial leaves like the cauline, concealing antheridia
in theii’ saccate dorsal bases. Stem-leaves dccurrent on the back of the
stem; rootlets proceeding only from the base of the deeply 2-cleft amphigastria.
(Name formed of 7ier6a^e, and aKvcpos, cup; in allusion to the herbaceous
calypti'a.)
1. C . p o l y a i n t l i o s , Corda. Stems procumhent; leaves ovate-quadrate;
involucral leaves 2, slightly 2-toothed; perianth 3-lobed, the lobes sliorfc and
nearly entire. — Rocks, &c. (Eu.)
2. C . a s c e n c l e n s , Hook. & Wils. Stems prostrate; leaves ascending,
roundish-oblong, slightly emarginate; involucral leaves 2, two-eleft; perianth
2 -3-lobed; the lobes long and irregularly laccrate-tootlied. (C. labiatus,
Taijlor.) — On rotten logs, &c. — A large species, with pale-green foliage.
(Tab. v n . )
3. C . B r u m m o n d i i , Tayl. (inLond. Jour. Bot. 1846.) Densely ciespi-
tose; stems branching, prosti-ate (the gemmiferous ones ascending, attenuated);
leaves ercct-patent, oblong, 2-cleft; amphigastria ovate, acute, connate with
the adjacent pair of leaves; perianth oblong, inflated, bifid and subcompressed
a t the mouth, gibbous at the ventral base, terminal on short naked branches;
involucral leaves 3 - 4 , laciniate, scale-like: a small species. — “ Bark of trees,
North America, Drummond.*^
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