EXPLANATION OF THE PLATES. 
—_»~—— 
e I.—Batracnosrermum Diiikesit (Bory), Sirdt. 
h. 
; Plat 
a. 1.—A sterile branc 
ig. 2.—Portion of a young branch, showing a row of 5 central cells, with the little 
? branches at the nodes 
Fig. 3.—Portion of an older bran ch with 3 eystoc 
_ Fig. 4.—Portion of a young aie with the féthale pos and the young trichogyne 1. 
Fig. 5.—Portion of a — nch: b=basal cell of the whorl, f.a.=fem e axis 
=trichogy 
Fig é qnahogyne. f theridi s=—spermation I ii ated 
Plate 
hol ‘> Bas pygmed, geichin 
TI.—CHANTRANSIA. 
- ; igs. 5, 6, Ch. subtilis. 
Fig. 1 r vith 5 bushels of Chantransia (aed size). 
Fig. 2.—Creeping finieae with 2 jee  baeantiee 
 ‘Fig.3 Portion of the thallus. 
_ ¥ig. 1—Branch with spo um. 
_ Fig. 5.—Creeping and erect filamen 
_ Fig. 6.—End of an erect filament with hairs and sporangia. 
Plate III.—Bvizo 
Fig. 1.—B. gigantea. Branch of a one Plant with ‘androsporangism. 
Fig 1g. aoe gigantea. Oosgonium spor 
Fig. 3. ee gated, 
Fig. 4.—B. giganten. 
Fig. 5.—B. gigantea. 
Fig. 6.—B, ie count 
Fig. 7.—B. oma 
dria, 
Branch of & Py peat plant with a young oogonium superposed by 
um, 
Oogonium with wigan oneanate ar 
Oogonium on a nanna a by 2 
eee of a male plant with h androsporangium superpos 
"Brandi of a female plant with oogonia cansgpiaitd and nan- 
" Oogo onium with mature oospore 
: Branch of a male plant with androsporangium 
MCU. 
Several plants on the cells of Cidogonium spec. 
Fi Plate IV.—Cpogonium. 
Fie, 1,—. undulatum yee oogonia, androsporangia, and nannandria. 
la. —E, undula tu’ nandrium. d 
ulo > . 
Franklinianum, Rafer , oogonium ; }, anthe ridium. 
, Rite. 5 3 a, oogonium ; 0, antheridium. 
s Satan m and antberidi um. 
spect trac seeibiai 
Plate V.—CuzTOPHORA. 
Portion 2 the thallus. 
izoids, 
—Ch. punctiform is, Kiitz. Portion of the “aati 
~Ch, punctiformis, Onene filament. 
Plate fhe —SrigEocton1um ; CLADOPHORA. 
larged 
Se gia more 
the upper port Sedo of the thallus. 
“La isk 
ad Led 
° 
os 
2 
Paty 
= Portion of the rong 
air protenswm. "Portion of the thall 
—s tenue. Portion of the thallus fabavel 
1 ag doohora par esi jes h f the 
é oe or Oo 
8 9g reborn ite vl rier 
id 
#y 
enlarged). 
~~ 
/ 
