Chromosome Numbers in Characeae — HOTCHKISS 
35 
Fig. 2. Chromosomes in antheridial filaments of charophytes from the South Pacific, a-c, Nitella acuminata 
metaphase; d-j, Nitella pseudoflabellata; d, interphase, e-j, metaphase. (Camera lucida drawings, all X 900.) 
in all members of the Haplostephanae-ecorti- 
catae; the count recorded here confirms the 
previous counts of 14 in the dioecious Char a 
( Proto char a ) australis from Australia (MacDon- 
ald and Hotchkiss, 1955). 
2-3. Lamprothamnium succinctum (CYT NC-1 
and 2 ) . Figure le, f. 
The present count of 42 chromosomes is a 
first report for this species. The high number of 
42 agrees generally with another count for this 
genus, that of Lindenbein (1927) which was 
ca. 50 for Lamprothamnium papulosum (Wallr.) 
J. Groves. The number and general configuration 
of the chromosomes lend support to Wood’s 
(1962a: 14) transfer of C. succinctum to the 
genus Lamprothamnium. 
