60 J UBULA. 
perianthio subduplo longior, sat crassus, tener, cellulis oppositis 
bistratis 20-seriatis—axialibus majoribus 4—seriatis (interstitiis crucis 
figuram ostendentibus), corticalibus parvulis 16-seriatis oblongo- 
tabulatis conflatus ; apice autem in capsule basin insigniter dilatatus, 
carnosus pallidus, pedicelli apophysin (forma sphere segmentum) 
sistens, vertice ipso (7.¢., facie supera) cellulis quadratis pluriseriatis, 
al lineas diagonales cruciatas ordinatis constans. Capsula globosa, 
a basi ad + (vel ad 4 fere) semicircumferentiz—sc. ad apophysis 
apicem usque—integra, deinde quadrivalvis ; valvule rufo-badiz 
valid recurve, tota fere facie interna (subrugosa) elateriferee ; cellule 
valvularum bistrate, exteriores tabulate pachydermes, incrassationes 
validas ad latera monstrantes; c¢. strati interioris multo minores, 
compress, toto ambitu flavido-incrassate, cavitate pellucida, unde 
valvule poris magnis perforate videantur. Elateres 50-56 cujusque 
valvul, prelongi tenuiusculi, basi angusta adfixi, apice lato truncato 
obtuse quadrato, helice sat valido arctius contorto, folliculo tenuissimo 
cito dissoluto. Spore elateribus duplo latiores, minute tuberculose. 
Andrecia ramulis spiceformibus constantia; bractese diandre. 
Habitatio et Distributio. Species unica, sat variabilis, hucusque 
cognita in saxis humectatis umbrosis crescit. In Hibernia austro- 
occidentali clarissima Miss Hurcuins eam primum reperit ; nuperius 
in Britanniz variis locis, juxta oras occidentales, inventa est, necnon 
in America boreali, subtropica precipue (Virginia, Carolina, Mexico). 
Per terras tropicas totas dispersa videretur, rara tamen. Ipse prope 
Killarney Hibernie etiam ad pedem montis Tunguragua Andium 
Quitensium legi, 
» This fine genus is certainly distinct from both Frullania and Lejeunea, 
and is in some respects intermediate between the two genera. It agrees 
with Lejewnea in the bracts of the female flower being adnate to sub- 
floral ramuli (or innovations),—a character not found in any Frullania ; 
also in the incurrent (not transverse) leaves, whose spinoso-dentate 
margin quite recals the subgenus Odonto-Lejeunea, and has no parallel in 
frullania ; nor are there distinct trigones at the cellular angles, as in every 
Frullania. The pedicel agrees exactly with that of Lejewnea in consisting 
of two concentric strata of conterminous (not alternate) cells, arranged so 
as to form a cross on the transverse section of the pedicel (4 axial, and 16 
stnaller peripheral series of cells); only the apex of the pedicel is more 
dilated than in any Lejeunea, shewing a quadrate, plane, or slightly 
concave surface, traversed by a great number of diagonal lines (the limits 
of the quadrate cells) crossing at right angles. On the longest diagonals, 
viz., those joining the basal angles of opposite valves, I have counted in 
a capsule of inordinate size as many as 32 cells, and they are never fewer 
than 22; besides a few minute thickened cells set at each angle, like a 
gusset, with the effect of preventing any rupture of the apophysis below 
