NITOPHYLLUM 135 
d’Histoire Naturelle by three* cystocarpic fragments brought from 
Callao by du Petit-Thouars. Montagne refers to his ‘‘unique 
échantillon," and, though the three fragments are now mounted and 
inscribed as two specimens, they are so nearly identical in general 
habit that it is easy to suppose that they are parts of one and the 
same individual plant. The fragments lack basal parts, from 
which “Delesseria peruviana” draws some of its most striking 
characters. The thallus is nerveless and apparently ribless, as in 
Nitophyllum peruvianum, and we suspect that further collections 
will show that “Delesseria phylloloma”’ is a proliferous and cysto- 
carpic condition of Nitophyllum peruvianum. However, there are 
obvious differences in form and habit as will be noted on comparing 
the photographs. But the apparently less deeply cleft and wider- 
angled forking of the apparent main segment, as shown in our pho- 
tograph of '' Delesseria phylloloma," is an illusion, due to the press- 
ing together and adherence of two discrete pieces. -The тат 
segments appear rather more coriaceous and less adherent to paper 
than the probably homologous segments of “ Delesseria peruviana,” 
but this may be due to their more copious infection with Endo- 
derma viride Nitophylli, which gives a greenish cast to all except 
the innovations. These main segments аге 1—1.5 cm. broad and 
55-95 u (2-4 cells) thick. Cystocarps occur rather sparingly 
scattered both on the main segments and on the innovations; 
they are 0.55-0.7 mm. in diameter. The main segments show 
numerous perforations caused by the falling out of the cystocarps, 
as described by Montagne. 
PLATE 55. Nitophyllum peruvianum 
Photograph of the original specimen (“а”) of Delesseria peruviana Mont. (Callao, 
d'Orbigny) in the herbarium of the Muséum d'Histoire Naturelle of Paris, Дарио 
reduced. The attached plant (“ b,” to the left) is Callophyllis variegata, 
name of which the paster bearing the synonym of the Delesseria peruviana ies to ail 
appearances been inadvertently attached. 
Nitophyllum Bartlingianum (Kiitz.) J. Ag. (Sp. Alg. 2: 656. 1852. 
Schizophyllum Bartlingianum Kiitz. Phyc. Gen. 443. pl. 60. 
f. І. 1843; Tab. Phyc. 16: pl. 31. f. c-h. 1866), described 
from the coast of Peru, was apparently not collected by Dr. 
Coker and we have seen no specimens of it. 
* Apparently two, in reality three. 
