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GLOSSOPHORA 73 
Coker 56 (PLATE 28); т the surf, Island of San Lorenzo, Feb. 5, 
1907, Coker 57 p.p.; on surf-washed rocks, Chincha Islands, June 
18, 1907, Coker 102 p.p.; also, in same locality and habitat, 
July 13, 1908, Coker 493 p.p.; in one fathom, Isla Vieja, Bahia de 
la Independencia, July 20, 1907, Coker 09640 p.p. 
Nos. 23, 32, 56, and 57 are from the type locality or near it. 
The specimens collected represent various ages and sizes of the 
plant, yet all of the mature ones, so far as we have examined them 
microscopically, appear to be tetrasporic. The largest plants 
collected attain a length of a little more than 30 cm. In the 
younger and middle-aged plants, a cross section of the thallus 
very commonly shows only a single layer of cells in the cortex, 
but in the older conditions the cortex consists of two and occa- 
sionally three layers, if one includes in the “согїех” а layer that 
often has a character somewhat intermediate between the surface 
layer and the medulla. We rarely find J. Agardh’s “fila brevia 
уегїїсайа” except in the basal parts. The tetrasporangia occur 
on both the main thallus and the outgrowths from its surface. In 
the best-developed condition (no. 23), both surfaces of the thallus, 
with the exception of basal portions and occasional margins, 
are very densely covered with ligulate or spatulate foliola, which 
are often dichotomous, proliferous, or subpinnately compound, 
and commonly bear more or less numerous root-hairs on their 
margins and ventral surfaces. 
The original specimens were brought from Callao and “ Guan- 
chaco” by Humboldt. The species has since been reported from 
the region of Callao by Piccone (Alg. Vettor Pisani 33. 1886). 
Pilger (Hedwigia 48: 178. 1908) attributes it to Chile also. 
PLATE 28. Glossophora Kunthii 
Photograph of a dried specimen (Coker 56), reduced to about two fifths of the 
natural dimension 
Padina Durvillaei Bory, originally described from Concepcion, 
Chile, seems to occur also in northern Mexico (Bull. Torrey Club 
38: 497. 1911) and California (Farlow, Anderson, & Eaton, Alg. 
Exsicc. Am. Bor. 158) and is likely to be found on the shores of 
Peru. 
