И ЛА жарғаны че де ТУРНЕ ТОРО ады әрібі а ааа пали. „т ут тирне mM 
"—— p T — —Á———————OO———— n 
| 
| 
| 
| 
BRYOPSIS 39 
“Abundant on rocks," Pescadores Islands, region of Ancón, 
Feb. 12, 1907, Coker 77 (type) and 80 p.p. 
It may seem rash to propose a “new species" іп a genus іп 
which diagnostic characters are apparently so unstable and in 
which synonymy is so involved as in Bryopsis, yet we have been 
unable to find any description or specimen with which we could 
identify Dr. Coker's Peruvian plant with any degree of satisfaction, 
` even though it offers points of contact with several already recog- 
nized species. Possibly it deserves comparison with Bryopsis 
corymbosa |. Ag., described from small plants epiphytic on Codium 
at Livorno (Leghorn), Italy. We have seen no authentic speci- 
mens of this, but it is described by Agardh as having the nitid 
facies of other species of the genus, a pyramidal frond, subsquar- 
rose upper branches, and certain other characters that are not 
found in the Peruvian plant, and nothing is said of any rhizoidal 
decurrence of the branches. In color, habit, and lack of lustre, 
Dr. Coker's specimens are rather strikingly suggestive of Caulerpa 
fastigiata Mont. However, the lack of the characteristic Bryopsis 
lustre may be due in part to the mode of preservation and to a 
rather liberal and intimate coating of diatoms that is often 
present. ; 
In general size and habit, the Peruvian specimens resemble the 
Adriatic plant figured Бу Kützing (Tab. Phyc. 6: 21. 73. f. 11) 
as Bryobsis fastigiata, but have a more pronounced main axis and 
excurrent rachides, and there is in Kützing's figure and description 
no indication of decurrent rhizoidal prolongations at the base of 
the branches. However, authentic specimens from the Kützing 
herbarium, which we owe to the courtesy of Mme. Weber-von 
Bosse, show that such prolongations do occur, though in a less 
pronounced degree than in Dr. СоКегз plants, but B. rhizophora 
evidently differs, in addition to the larger more pronounced main 
axis and excurrent rachides, already mentioned, in the much more 
rigid, less gelatinous, non-nitent, dark green thallus. De-Toni 
(Syll. Alg. 1: 433) makes В. fastigiata a synonym of В. corymbosa J. 
Ag., but J. Agardh is inclined to identify it with Bryopsis plumosa 
(Till Alg. Syst. 5: 25. 1887). Rhizoidal outgrowths at Ше 
bases of the branches are not unknown in certain other species of 
Bryopsis, but nowhere else in the genus have we found them such 
