47 & 
Carter . — The Cytology of the Cladophoraceae . 
DESCRIPTION OF PLATE XXVII. 
Illustrating Dr. Nellie Carter’s paper on the Cytology of the Cladophoraceae. 
Figs. 9-40 all x 1423. 
Fig. 1. Cladophora glomerata , var. fasciculata, (Kiitz.) Brand. Transverse section of a young 
segment, x 6ro. 
Fig. 2. CL glomerata , var. callicoma , (Kiitz.) Rabenh. Transverse section of a young segment 
in the autumn condition, the chloroplast distended with starch-grains ( st.] ). x 610. 
Fig. 3- CL crispata , (Roth) Kiitz. Portion of a young segment, x 510. 
Figs. 4 and 5. Cl. fracta, Kiitz. Transverse sections of young and older segments respectively. 
X 810. 
Fig. 6. CL glomerata , var. simplicior , Kiitz. Transverse section of a fairly old segment, 
x 810. 
Fig. 7. Cl. glomerata , var. callicoma , (Kiitz.) Rabenh. Longitudinal section of a young 
segment in the autumn condition (st. = starch), x 610. 
Fig. 8. Cl. glomerata, var. fasciculala, (Kiitz.) Brand. Transverse section of a very old segment 
with the epiphytic diatom Cocconeis Pediculus. x 610. 
Figs. 9-22. Rhizoclonium hieroglyphicum , (Kiitz.) Stockm. Successive stages in the division of 
the nucleus. Fig. 9, resting nucleus; Figs. 10 and 11, disappearance of the nucleolus; Figs. 12-14, 
formation of spireme; Fig. 15, appearance of spindle and chromosomes; Figs. 16-18, anaphase; 
Figs. 19-21, telophase; Fig. 22, daughter nuclei. 
Figs. 23-37. Cladophora glomerata , var. simplicior , Kiitz. Division of the nucleus. Figs. 23 
and 24, resting nuclei; Figs. 25-27, disappearance of the nucleoli ; Fig. 28, formation of spireme; 
Fig. 29, formation of chromosomes and spindle; Fig. 30, the spindle in end view; Figs. 31-33, 
anaphase ; Figs. 34-36, telophase ; Fig. 37, daughter nuclei, the chromatin in one being not yet 
entirely collected into a nucleolus. 
Figs. 38-40. Cl. glomerata , var. fasciculala, (Kiitz) Brand. Abnormal nuclear division at the 
anaphase stage. 
