26 CHAETOPHORACEAE 
This species is evidently closely related to Endoderma lepto- 
chaete Huber (Ann. Sci. Nat. Bot. VII. 16: 319. pl. 15. f. 1-0. 
1892), described from plants endophytic in European specimens of 
Chaetomorpha, Cladophora, and Ceramium. It appears to differ 
chiefly in the greater development of the pseudoparenchymatous 
disc and in the absence of cilia, the presence of which in the Euro- 
pean plant has been considered by Wille [Engler & Prantl, Nat. 
Pflanzenfam. 17: Nachtráge 79. 1909] of sufficient importance 
to justify raising Huber’s section Ectochaete to generic rank. Dr. 
Coker’s material is preserved with formalin and is apparently 
in excellent condition but we have been unable to demonstrate 
the existence of cilia in the plant described above, though we have 
devoted much time to searching for them, with the assistance of 
lenses magnifying 1350 diameters or more. There are, however, 
numerous casually attached filaments of various bacteria and algae 
that bear more or less resemblance to cilia at first sight. If true 
cilia occur in these Peruvian specimens, they are, at least, exceed- 
ingly rare, and if the species here proposed is ever considered to be 
synonymous with Ectochaete leptochaete (Huber) Wille, the genus 
Ectochaete would seem to rest upon a rather unnatural and un- 
satisfactory basis. 
. Endoderma strangulans cannot well be identified with E. viride 
(Reinke) Lag., originally described as an endophyte of Derbesia 
Гатоитоихи from the Bay of Naples. Е. viride, as it occurs in 
Derbesia Гатоигоихи at least, does not form a parenchymatous 
disc in any such sense as does E. strangulans; even in the most 
compact parts the individual filaments are distinctly recognizable, 
while in the disc of Е. strangulans cell division takes place in two 
and sometimes three planes, and all trace of filaments is finally 
lost; its cells average about 7 и wide while those of Е. strangulans 
average 10 и and most of its cells are relatively more elongate; 
the cells of Е. viride appear to have but a single pyrenoid, while 
those of E. strangulans often have two or more. In Endoderma 
viride f. Nitophylli Cotton, originally described from England but 
occurring also in “Delesseria phylloloma Mont.” at Callao, the cells 
average somewhat narrower than in the type in Derbesia and are 
scarcely more than half the average diameter of the cells of Е. 
strangulans. 
