S u b o r d e r III. B R Y A C E .® .
D iv . I. A c r o c i i r i u .
Frait termmal on the main stem, or rarely terminal on short lateral branehcs.
A . CLEISTOCAKPI. — Capsule without an operculnm, rupturing irregularly.
T r ib e I. P H A S C E iE .
3 . A R C H I D I E I H , Bricl. (Tab. I.)
Calyptra irregularly raptured in the middle; the lower part persistent. Capsule
globose, sessile on tho short vaginula, immersed. Columella none. Spores
large, few (8 -1 5 ). Inflorescence monoecious: male flower naked or 2-lcaved,
axilliU-y. — Minute terrestrial plants, of a structuro more simple than any of the
suhordor, hence its name ( ’ApxiStov, a beginning).
1. A . O l i i o e n s c , Schimp. Stems at first erect, l " - 2 " high, afterwards
decumbent, and lengthened by innovations; leaves lanceolate, cuspidate by the
exciirrent costa, slightly denticulate above, tho perichaitial much la rg er; capsule
terminal on a short lateral branch. (A. pliascoides. Muse. AUeghan., No. 213.)
Meadows and waste fields. Central Ohio, and N. Alabama. (Tab. I.)
4 . P H A S C U M , L. (Tab. I.)
Calyptra campanulate or cuculliform. Capsule roundish, more or less .apion-
late, shortly pedicellate, usually immersed. Columella present. Spores numerous,
muriculate; inflorescence monoecious. — Diminutive species, mostly annual,
growing on tho ground, either stemless and bulb-like, or with a short stem,
sparingly divided; leaves costate or ecostate. {’tdcneov, an ancient name for a
moss.)—For convenience, tho genus is here retained in its former extended sense;
the names of the genera, into which a natural an'angemont requires tho species
to be distributed, being used for sections.
if; Plants growing from a confervoid thallus. Columella fugacious.
(, 1. EPHEMilBIJlW, Hampe. — Semicss: leaves o f a loose rhomboidal areolation :
calyptra campanulate-conic : capsule globose-ovate, subsessile, apiculate: spores
large: male flower gemmiform, at or near the base o f the fertile stem.
1. P . s e r r a t u m , Sohreb. Leaves oblong or linear-lanceolate, ecostate,
deeply serrate; capsule purple, shining. —Moist ground; edgeofwoods. (Eu.)
2. P . s e s s i l e , Br. & Sch. Leaves lanceolate-subulate, nearly entire; costa
excurrent, more or less obsolete near the base. — Clayey soil, in thin woods.
Central Ohio. (Eu.)
3. P . c r a s s i n c r v i u i n , Schwaigr. Leaves linear-lanceolate, strongly
and irregularly dentate near the ap e x ; costa continuous, not cxcurrcnt. — With
the la s t .-A l s o with a var. 7 having the leaves near the apex spinnlosc-dcntatc,
(the teeth often recurved,) and papillose or cristate on the b a c k ; spores much
la rg e r: -p ro b a b ly E. spinulosum, Br. ^ Sch., mentioned in Wils. Bnjol. B n t ,
p. 27.
4. P . c o l i i è i 'c n s , Ilcdw. Leaves ohlong-Iauceolatc, strongly serrate;
costa vanishing below the apex ; capsule brownish-purple. — Eiver-banks, Central
Ohio. (Eu.) '
# * Plants without a confervoid thallus. Columella persistent.
^ 2. PIIYSCOMITEÉLEA, Scliimp. — Caulescent : leaves loosely areolated :
calyptra eampanulale-conic : capsule globose, apiculate : antheridia naked, axillary,
with paraphyses ghbosely distended at the apex. ( Closely allied to Aphanorhcg-
ma among Eunai-ieai.)
5. P . j t i i t em s , Ilcdw. Leaves subspatulate-Ianceolate, serrate, costato
nearly to tho apex; capsule sometímos exserted. — Moist clayey soil. Central
Ohio: rare. (Eu.)
§ 3. ACAÜLON, Mull. Stemless, biib-like : leaves broad-ovate or obovate, veiy
concave, recurved at the apex, with a lax areolation: capsule globose, entirely concealed
by the 2 or 3 large subcucullate perichaitial leaves: calyptra minute, cam-
panniate : infiorescence as in \ 1.
6. P . tri< ir a è ti’u i i i . Spruce. Leaves 3-ranked, carinate-concave, shortly
cuspidate by tho continuous oxcurrent costa, tho perichaitial ones 3 and larger ;
capsule horizontal, with a curved pedicel. — On dry soil ; rare. (Eu.)
7. P . H l i i t i c i l j i i , Schreb. Size of tho last; leaves not carinate, costate,
tho perichaitial ones 2 ; capsule erect ; pedicel straight. — Moist ground. (Eu.)
8. P . S c l i i i i i p e r i à n H m , Sulliv. (Muse. Bor.-Amer., No. 26.) Ee-
sembles the last two species, but the perichatial leaves near the apex are papU-
loso on both surfaces, erose-dentate on the recurved margins, and cuspidate by
the costa which extends scarcely \ of tho way towards their base, the other leaves
without any trace of a costa ; capsule, pedicel, and calyptra as in No. 7. — San
Marcos, Texas, Wright.
§ 4. PHASCUM PnopEK. — Stems simple, or once or twice divided by innovations:
leaves costate; areolation below large, loose, oblong, above minute, subquadrate
chlorophyllose: calyptra ouculliform: capsule globular, acuminate. — inoscmhlcii
the Potticffi.)
9. P . c u s p i d à t u i n , Schreb. Leaves elongated-lanceolate, cuspidate
more or less papillose on tho back near the apex; costa excun-ent; capsulé
immersed or exserted ; antheridia mostly naked in the axils of the perichaitial
leaves. — Old fields ; not uncommon. (Tab. I.) (Eu.)
5 5. PLEUEÍDIÜM, Brid. —&ems erect or decumbent: leaves subulate, costate
with a loose and oblong hexagonal reticulation : calyptra cuculliform or campanulatl
comc: capsule globular or ovate; sometimes becoming lateral by innovations o f the
stem. •'
10. P . a l t c r n i f ù l i i im , Brid. Lower leaves ovate-lanceolate, tho upper
much longer, subulate from an oblong base; costa excun-ent, with tlie point
more or less scrrulato ; capsule ovate, obtusely acuminate ; calyptra eueullifonn -
male flower gemmifoi-m, axillaiy. - Old fields, &c.; common. - In Anierieaé
onus the base of the leaves is usually more closely areolated than in the Eu