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GIGARTINA ' 99 
depressed-hemispheric, discoid, ог button-shaped, finally 2 mm. in 
diameter and projecting т mm., the basal half at least with a well- 
defined pericarp (inner involucre). 
This species has been reported from Arica, Chile, by Montagne 
(Fl. Boliv. 26. 1839), but not heretofore from the present limits 
of Peru, so far as we are aware. We have not seen the specimens 
from Cobija and Valparaiso referred by Montagne (loc. cit. 25) 
to varieties of Chondrus crispus, but from his remarks in Сау” 
Flora Chilena (8: 340. 1852) we suspect that he subsequently 
placed them with C. canaliculatus. 
PLATE 36. 
Photograph of a cystocarpic specimen (from liquid pete а И Сок 402 
p-p.), natural size. 
Chondrus violaceus Sond., described from Peru, we consider 
to be referable to Gymnogongrus furcellatus, q. v. 
Iridaea laminarioides Bory, originally described from Сопсер- 
cion, Chile, has been attributed to the region of Callao by Mon- 
tagne (Fl. Boliv. 24. 1839). 
Iridaea violacea Kiitz., which was based upon Peruvian ma- 
terial, is apparently identical with Grateloupia Cutleriae, under 
which species it is further discussed. 
GIGARTINA Stackh. Mém. Soc. Imp. Nat. Moscou 2: 55, 74. 
1809. 
Mammiilaria Stackh. loc. cit. 
GIGARTINA CHAMISsoOI (Ag.) J. Ag. Alg. Med. et Adriat. 
104. 1842; Sp. Alg. 2: 267. 1851. Mont. Voy. 
Bonite, Bot. Crypt. 71. 1846 
Sphaerococcus Chamissoi Ag. Icon. Alg. Ined. 1: pl. 6. 1820; Sp. 
Alg. 1: 278. 1822. Bory, Voy. Coquille, Bot. Crypt. 168. 
1828. Mont. Fl. Boliv. 30. 1839. 
Sphaerococcus uvifer Bory, loc. cit. 171. 
Gracilaria Chamissoi Grev. Alg. Brit. liv. 1830. 
Chondracanthus Chamissoi Kiitz. Phyc. Gen. 399. pl. 75. Ј. 2. 1843. 
Chondroclonium Chamissoi Kiitz. Sp. Alg. 740. 1849; Tab. Phyc: 
17: 20. pl. 66. f. a-d. 1867. . 
Тһе eoim тоа of Gigartina Chamissoi were collected 
