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1892. | : Briefer Articles. 59 
soriis, haud repletae, lamellis unistratis formatae. Stomata parum 
elevata, exigua, cellulis 5-6 radiatis superficialibus constantia, foro 
minimo vel fere nullo, inter tamen majore cellulisque apice con- 
vexo-prominentibus stellaeformi. Cel/ulae epidermidis parvae, haud 
incrassatae. 
Squamae posticae biseriatae, parvae, remotae, purpureae vel violaceae, 
late ovatae, varie lobatae, lobis superioribus appendiculo  filiformi 
munitis, adice//ae incrassatae e basi paginaque squamarum ortae. 
Inflorescentia monoica. Androecia flori femineo approximata, an- 
theridiis in medio costae uniseriatis, saepe totam costae longitudinem 
occupantibus; ostio/a conica, pallida. Peduncudus capitulorum ex 
apice costae — strato r ente — ortus, basi apiceque nudus, 
longus, tenuis, bicanaliculatus, irregulariter sulcato-carinatus. Capit- 
uéa feminea circularia, disciformia, antice leniter convexa, 5-6 costata, 
costae radiatae humiles papulosae, in centro capituli crassae; capitula 
i argine ipso regulariter denseque 
crenata, postice plana, 5-6 locularia; docu/i radiatim positi, capituli 
nS 
~ 
& 
nullo, operculo dehiscens, pariete tenui exannulifera, unistrata. 
Elateres longiusculi bispiri. Sporae brunneae, tetraédrae, reticulatim 
lamellatae, dilute limbatae. 
Hap.— California. Mexico (Humboldt). 
_The postical scales in both genera are very irregularly lobed 
and dissected, not seldom down to the very base, so that the: biseriate 
arrangement is somewhat obscured. The inflorescence is monoicous 
both; in Duvalia, however, the male organs, which in Cryptomitrium 
Stand just behind the female peduncle, spring from different branches 
7 the Plant; in both the androecia are not pedunculate and the an- 
€ridia, as in Riccia, are immersed in the substance of the frond; they 
Sa small conical ostiola, which are arranged in a long row; In 
walia they are united into a small roundish disk and surrounded by 
Minute lanceolate scales.. 
