GIGARTINA 101 
plants are rather sparingly and irregularly pinnate; the cysto- 
carpic more regularly and closely pinnate; cystocarps occasionally 
solitary on the ramuli, but mostly in short-spicate, moriform, or 
fusiform rostrate clusters of 4-15. 
Although the historic type of Gigartina Lessonii came from 
Chile, Bory, in the place of original publication, cites also speci- 
mens from Paita, Peru, and these Peruvian specimens are pre- 
served with the Chilean in the herbarium of Bory de St. Vincent 
in the Muséum d'Histoire Naturelle of Paris. The species has 
been reported from Paita also by Piccone.* That Bory had 
difficulty in always distinguishing his Sphaerococcus Lessonii from 
Agardh’s S. Chamissoi is shown not only in his general discussion 
of the species, but also in his herbarium, where one well-developed 
cystocarpic specimen is annotated in Bory’s hand, ‘‘Litigieux 
entre les Sphaerococcus Lessonii N. & Sphaerococcus Chamissoi 
The plants from ‘‘ Guanchaco ” listed by Humboldt, Bonpland, 
and Kunth (Nov. Gen. et Sp. Pl. 418. 1825) as Sphaerococcus 
Teedii, those from Callao referred by Montagne (Fl. Boliv. 30) to 
Gigartina Teedii, and those from Paita referred by Piccone (loc. 
cit.) to G. canaliculata as var. peruviana we have not seen, but 
specimens in Dr. Coker's collections suggesting these two species 
we take to be conditions of С. Lessonii. Such specimens аге 
rather less rigid and spinescent on drying than either С. Teedii or 
С. canaliculata; so far as we have observed, they are usually young 
and sterile, never cystocarpic. 
PLATE 37. Gigartina Lessonii 
Photograph of cystocarpic specimens (from liquid preservative— Coker тоза), 
reduced to about five sixths of the natural dimensions. 
GIGARTINA CHAUVINII (Bory) J. Ag. Аш. Med. et Adriat. 
104. 1842; Sp. Аш. 2: 268. 1851. Mont. Voy. 
Bonite, Bot. Crypt. 72. 
1846 
Sphaerococcus Chauvinii Bory, Voy. Coquille, Bot. Crypt. 165. 
pl. 20. 1828. Mont. Fl. Boliv. 29. 1839. 
Rhodomenia Chauvinii Grev. Alg. Brit. xlix. 1830. 
ж Alg. Vettor Pisani 57. 1886; Mem. К. Ассай. Lincei ТУ“, 6:— (30). 1889. 
