Vol. 43 No. 4 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
Se eeeiandi cteeammeenenetieteth email 
APRIL, 1916 
Notes on species of Halymenia 
F. S. Cottins AND M. A. HOWE 
In connection with studies of a series of specimens of red algae 
of the genus Halymenia from Bermuda, southern Florida, and 
North Carolina, we have been forced to recognize as entitled to 
specific rank four striking and apparently well-defined forms that 
we are venturing to describe as new. One of these is related to 
Halymenia floridana J. Ag., two find their closest affinity in 
H. Floresia (Clem.) Ag., and the fourth is allied to H. actinophysa 
M. A. Howe. Descriptions follow: 
Halymenia bermudensis sp. nov. 
Thallo violaceo-rubro, plerumque stipitato; stipite inferne 
subtereti, superne complanato vel costato-alato, interdum ramoso, 
plus minusve elongato; fronde membranacea, firma, levi, nec 
nitente, 60-120 4 crassa, suborbiculari, cordata vel obovata, 
saepe, interdum repetite, lobata vel prolifera, divisionibus frondi 
Primariae conformibus; margine plana vel plicata, subintegra, 
crenata, vel interdum irregulariter dentata; medulla frondis 
subcompacta, inter fila tenuiora filis crassioribus stellatim radiatis 
frequenter sparsis; strato corticali frondis series 1-3 cellularum 
minorum monstrante; strato subcorticali series I 
majorum monstrante; tetrasporangiis spars! . 
Species H. floridanae J. Ag. proxima, sed differt colore magis 
saturate violaceo-rubro, minus roseo, fronde magis dissecta, 
substantia firmiore, cortice crassiore, firmiore, saepe pleiostro- 
matico. 
[The Butietin for March (43: 117-168. pl. 4-6) was issued April 14, 1916.] 
169 
