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NITOPHYLLUM 188“ 
N. violaceum reported from Peru by Ріссопе (Alg. Vettor Pisani 
73. 1886) belongs here. 
PLATE 54. Nitophyllum cryptoneuron 
Photograph of Coker’s no. 465 p.p. (dried), natural size. Тһе light spots indicate 
the form and distribution of the antheridial sori 
Nitophyllum peruvianum (Mont.) comb. nov. 
Delesseria peruviana Mont. Ann. Sci. Nat. Bot. II. 8: 355. 1837. 
Fl. ВоПу, 22. 1820 
Aglaophyllum peruvianum Mont. Ann. Sci. Nat. Bot. II. 18: 251. 
1842. 
Cryptopleura peruviana Kiitz. Sp. Alg. 871. 1849. 
? Delesseria phylloloma Mont. Ann. Sci. Nat. Bot. II. 8: 355. 
1837. Fl. Boliv. 32. 1839. 
? Aglaophyllum phylloloma Mont. Ann. Sci. Nat. Bot. II. 18: 251. 
1842 
Nothing corresponding to either ‘‘Delesseria peruviana” 
(PLATE 55) ог “Delesseria phylloloma" (FIGURE 42) was brought 
from Peru by Dr. Coker and we know them only from the originals 
preserved іп the Muséum d'Histoire Naturelle of Paris. Delesseria 
peruviana is represented there by a single tetrasporic specimen 
collected at Callao by d'Orbigny. Montagne's о of it 
is excellent with the exception of the word “nervosa.” The 
plant has no nerves or veins that, in the dried condition, are visible 
to the unaided eye or with the help of a hand lens. As in some 
other species of Nitophyllum, the thallus is for the most part 
very thin and fragile and becomes more or less rimose or fissured 
on being pressed and dried, and this fissured appearance of 
certain parts of the thallus probably suggested the “пегуова” 
of Montagne’s description. When soaked out and placed under 
a compound microscope, the cells of the thallus are seen to offer a 
good deal of variety in form and size and one may recognize faint 
suggestions of veins, slightly more pronounced, perhaps, than in 
the "veinless" Californian Nitophyllum spectabile, to which the 
species is evidently related. The type specimen differs, however, 
from the later-published, though better-known, N. spectabile in 
the more elongate stipitate base, the more deeply lobed thallus, 
the cuneate or tapering bases of the lobes, the smaller, less con- 
