PLANTS CELLULOSAE FOLIOS;®. 
677 
Subseries I. B. Plants cellulose folios.®. 
Muscorum et algarum pars , Linnaeus. Cryptogamia 
monoecia and dioecia , Stokes. Cryptogamce calyptratce , 
Mohr. 
Plants having true foliaceous expansions or leaves mostly 
distinct, rarely united into a broad herbaceous frond, affixed 
to their place of growth by fibrous roots by which they 
absorb their nourishment, propagated by budlike sporae, 
or by seeds which are enclosed in capsules covered with 
calyptrae. 
FAMILIES. 
Capsule valvular ; columella 0 ; oper- 
culum 0; seeds with elaters intermixed HEPATICiE. 13. 
Capside operculated ; columella distinct ; 
elaters 0 MUSCI. 14. 
Fam. I. 13. II E P A T I C JE . Jussieu. Algarum pars , Lin. 
Cryptogamia dioecia , Stokes. Calyp- 
tratce deoperculataz, Mohr. 
Flowers unisexual. — M ale. Anthers oblong or sphaerical, 
networked, bursting irregularly, either pedicelled in the 
axillae of the perichetial leaves, or sessile on the frond or 
on a peculiar receptacle ; pollen granular. — F em. terminal, 
axillary, lateral or marginal; ovaries many, clustered, sel- 
dom more than one fertile, covered with a calyptra ending 
in a style, and surrounded generally with a calyx ; calyx 
single or double, rarely 0, mostly surrounded with peri- 
chetial leaves ; calyptra bursting and emitting the capsule ; 
capsule mostly pedicelled, valvular, rarely bursting irregu- 
larly ; valves 2, 4, 8 or 16, equal; columella 0; operculum 0; 
seeds P spherical, intermixed with elaters ; elaters membra- 
naceous, tubular, containing a single or double helix ; 
helices twisted spirally. — Plants monoicous or dioicous, 
small, frondose or leafy ; revive quickly after being dried 
by absorption of moisture; leaves undivided or simply cut, 
ribless, mostly bald ; texture loosely cellular ; sporidia bud- 
like, roundish or lenticular, scattered on the leaves and 
frond, or collected in origomes of various shapes. 
