Rhodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 11. February, 1909. No. 122. 
NEW SPECIES OF CLADOPHORA. 
F. S. CoLLINS. 
(Plate 78.) 
Cladophora microcladioides n. sp. Frondibus plus minusve caes- 
pitosis, 10-20 cm. altis; filamentis basi circa 200 и diam., rigidis, 
rectis vel flexuosis, distanter di- trichotomis, ramis similibus, erectis 
aut plerumque recurvatis, ramulos breviores secundatos latere su- 
periore et interiore gerentibus; ramificatione ejusmodi iterata in 
ramellos ultimos paucicellulares subacutos, 80-100 y» diam., desinente; 
cellulis diametro 2-6-plo longioribus; membrana cellulari crassa, in 
cellulis adultioribus lamellosa. Ramis fere e cellulis omnibus ortis, 
singulis, vel ad quatuor e cellula singula. 
Fronds more or less tufted, 10-20 cm. high; filaments about 200 u 
diam. at the base, stiff, erect or flexuous, distantly di- trichotomous; 
branches similar, erect or more generally recurved, bearing shorter 
ramuli, secund on the upper or interior side; repeated ramification 
of this kind ending in few-celled subacute ultimate ramelli, 80-100 u 
diam.; cells 2-6 diam. long; cell wall thick, in older cells lamellose. 
Branches arising from almost every cell, singly, or up to four from one 
cell.— Coast of California, from Monterey to San Pedro. 
А stout but graceful species, with a characteristic ramification, like 
that of the red alga, Microcladia borealis Ruprecht. There is con- 
siderable variation according as the main divisions are straight or 
flexuous, the branches close or more distant, erect or recurved; but 
the peculiar symmetrical ramification will distinguish it from any other 
of the American species. In the most typical form, every branch is 
regularly recurved, and bears on its convex side a series of similar but 
smaller branches, which curve uniformly in the opposite direction; 
and in turn bear another similar series. In some plants the branching 
| is very dense, two, three or even four branches issuing from the top 
