19 
minute bidentatis, dentibus omnino rectis, sinu lunulato-obtuso, 
margineinferiori abrupte anguste decurrenti, reti satis laxo in magni- 
tudine undique uniformi, amphigastriis minutissimis, superioribus 
orbiculatis bifidis, dentibus rectis acutiusculis integerrimis, sinu 
obtuso, medialibus inferioribusque bifurcate quadrilobis lobis 
‘primariis rotundo-quadratis valde divaricatis secundariis ovatis vel 
subulatis plerumque acutis ; colore satis viridi. 
In the Southern States, Sudlivant, Ravenel, Mohr. Also, on slides 
at the Delaware Water Gap, New Jersey (Austin). 
C. bidentula, Nees, is a larger species with the leaves of a some-. 
what similar shape and areolation, but with the teeth at the apex 
much less uniform, often very obtuse. sometimes nearly obsolete ; 
ventral flagella none. 
C. arguta, N.&M., also has stems without ventral flagella, 
leaves of a much looser reticulation, broader at the apex, and fur- 
nished with larger, somewhat divergent teeth. Possibly our plant 
is the C. Peruviana, Nees (Syn. Hepat. p., 200). 
7. Lepidozia? Californica, x. sp.—Caule subfiliformi flaccido 
inordinate ramoso, foliis laxe imbricatis profunde -palmatim 3-5- 
fidis, laciniis longe filiformi-attenuatis inzequalibus (inferioribus 
minoribus subinflexisque) integerrimis repandisve aut hic illic iterum 
incisis ; amphigastriis caule latioribus suboblongis profunde bifidis, 
laciniis longe inciso-ciliatis, foliis amphigastriisque involucralibus 
subconformibus; reti laxo; inflorescentia dioica? pistillidiis numer- 
osis, nudis: fructu—. (An Mastigophore species ?) 
Bark of trees, mountains of California, Bolander. (Occurs in 
Muse. Exsic. Sulliv. & Lesqx. Ed. 2, with No. 474, Hypnum 
circinale). 
8. Radula Hallii, n. sp.  Statura inflorescentia habituque A. 
complanate ; sed foliis apice magis incurvis, involucralibus min- 
oribus magis w#qualiter bilobis, perianthio majore ellip'ico-oblongo 
subinflato apice angustiori ore seve subscarioso, perbelle distingui- 
tur. 
On trees, Salem, Oregon, /. Hall. 
9. Radula Sullivanti, Aust. Hep. Ersic. n. 88°—Flavescens 
subnitens; caulibus strictis subparallelis imbricato-cxspitosis hic 
illic (praecipue ad apicem) confertim pinnatis, ramulis brevibus di- 
varicutis, foliis subimbricatis flaccidis siccando subcrispatis patentis- 
simis rotundo-ovalibus falcatis convexis apice magis minusve decur- 
vis basi ventrali abrupte complicatis, margine subrepando-dentata 
inferiore rotundata et cum carina angulum plerumque rectangulum 
formante (carina ad 3-erecta), lobulo parviusculo subinflato apice 
obtusissime triangulari-vel semicirculari-rotundato, margine interna 
cauli adnata et cum eo parallela, toro radicellarammagno umbonato 
vel subeampanulato, reti e cellulis mediocribus subobscuris puncti- 
formibus subrotundo-hexagonis subuniformibus supra hand con- 
vexis, intercallaribus angustissimis pellucidis exstructo: flore et 
fructu ignotis. 
On rocks; mountains of Georgia, Sullivant, Lesquereuc. 
19. Radula spicata, ». sp.—Dioica, minutula ; caule brevi pros- 
trato intricato valde innovanti-ramoso, foliis caulinis laxe imbrica- 
tis semiverticalibus subadscendentibus late obovatis obtusis inte- 
gerrimis basi inflatis obtusissime complicatis spatio brevi latoque 
