126 JUNGERMANNIACEAE 
monly widest at the middle or a little below. We are of the 
opinion, first ventured as a suspicion by Dr. Spruce (On Cepha- 
lozia, 41) and afterwards confirmed by Mr. Pearson (List of 
Canadian Hepaticae, 9) that Cephalozia crassiffora is a synonym 
of C. pleniceps. 
We have here some grounds for believing that our Californian 
specimen is dioicous as well as monoicous but the branches of a 
Cephalozia can be so easily disarticulated in manipulation that 
we dare not assert this with positiveness. 
&ephalozia pleniceps can be distinguished from its near ally C. 
media by the twice larger, scarcely or not at all decurrent, more 
nearly orbicular and less rhomboidal leaves, which incline to be 
vertical-connivent instead of horizontal or subassurgent, by the 
broader, merely acute lobes, the thinner calyptra, the rather 
more fleshy perianth, etc. This species seems always to be found 
in company with mosses in swamps, beside streams, and on moist 
rocks, while C. media, in California at least, affects logs and decay- 
ing wood almost exclusively. 
PLATE 104. CEPHALOZIA PLENICEPS. 
. Portion of plant showing perianth and androecium, Х 12. 
. Portion of a sterile: stem, with leaves, Х 23 
. Ф branch showing perianth and bicis dorsal view, 12. 
С AOU N м 
ні 
о 
n 
دع‎ 
= 
NU 
4 
о 
В 
= 
я 
m 
= 
< 
= 
e 
SR 
h, with perianth and bracts, dorsal view, Х 12. 
9 branch, lateral view, the perianth undeveloped, Х 23. 
А thin longitudinal microtome section of perianth, >< 23. 
8-11. Cauline 52 showing the outer (convex) face, Х 23. 
12-14. Bracts, X 2 
15. Bracteole, Х =. 
16. Second (next to the inmost) bracteole, Х 23. 
17. Portion of perianth mouth, 
18. Cross-section of stem, 53 
1. 
19-21. Bases of bracts with adjacent parts of stem, in sectional view, X 4 
22. А cauline leaf, X 41. 
VR. 
ts. of 
Figs. 2-4 and 12-17 from the original specimen collected in the уне КО 
New Hampshire by Mr. Oakes, ex herb. Pearson ; the remaining figures from 0 
men collected at Sisson. 
„ó: 
3. CEPHALOZIA MEDIA Lindb. Medd. Soc. Faun. et Fl. Fen? 
242. "1881. 
С. multiflora Spruce, Оп Cephalozia, 37. 1882. ава. 
‚ Pucephalosia media Schiffn.; Eng. & Prantl, Nat. Pflanz 
:97. 1895. 
