LoPHoziA 111 
mostly weak and slender, sparingly subdichotomous, or with a few 
lateral or latero-ventral branches, often innovating from near the 
base of the perianth ; root-hairs short, scanty, colorless or yellow- 
ish: leaves usually distant or contiguous, obliquely inserted, 
patent-horizontal to erecto-patent, now and then reflexed, orbicular- 
ovate to subquadrate-oblong, .36-.9 mm. x .27-.8 mm., some- 
what decurrent dorsally, concave or nearly plane, bilobed 1/—14 
their length, the sinus rather narrow, more or less obtuse, the 
margin otherwise entire or slightly repand, lobes obtuse, nearly 
parallel, rarely inclined toward each other or subdivergent, the 
dorsal a little the smaller; leaf-cells rather thick-walled, with in- 
distinct trigones, the superior and median 24-40/, the basal 
scarcely larger, cuticle smooth or obscurely striolate : underleaves 
wanting unless in association with the 9 bracts: dioicous : androe- 
cium terminal or median, 4 bracts imbricate, concave, mostly 
broader than long, almost transversely inserted ; antheridia ovoid, 
.2 mm. in greatest diameter, on very short stalks, unaccompanied 
Әу paraphyses: 9 bracts often a little smaller than the leaves, 
otherwise similar : perianth much exserted, sometimes exposed to 
the extreme base or even appearing stipitate, now and then falsely 
dorsal through the development of a “ subfloral " innovation, pro- 
late-ellipsoidal or elongate-pyriform, 2-2.7 mm. х.85-1.2 mm., 
inflated, smooth throughout or obscurely plicate only at the obtuse 
apex, the wall bistratose in the basal third or fourth, the mouth 
with a few short connivent teeth : capsule elongate-ovoid, its wall 
of three layers of cells, the external layer with nodular or colum- 
Nar thickenings, the others with semiannular ; spores 14—18 pi, 
granulate-papillate, elaters contorted, slightly attenuate at extremi- 
ties, 120-1 80 и long, 8—10 м in maximum width. 
In swamps, on wet rocks, etc. 
“Ме. Dana, Cal, legit Н. N. Bolander" in herb. Underwood. 
The specimen is wholly sterile, but we feel no doubt as to its 
identity with the above species. 
5. Lopuozia ovata (Dicks.) 
Jungermannia ovata Dicks. Pl. Crypt. Brit. 3: 11. pl. &. f. 6. 
1793. 
Ji “germannia Dicksoni Hook. Brit. Jung. pl. 48. 1816. 
Dip lophyllum Dicksoni Dumort. Rec. d'Obs. Jung. 16. 1835. 
8 Diplophylleia Dicksoni Trevis. Mem. r. Ist. Lomb. III. 4: 420. 
1977. | г: 
_ Bright green above, darker below, caespitose, often in compact 
extended mats ; stems 8-20 mm. long, simple or dichotomously 
