ACROCHAETIUM 83 
пета Batters, but, apparently, without seeing authentic specimens 
of the latter. Colaconema Bonnemaisoniae, the type species of 
Colaconema, seems, however, to be not uncommon in herbarium 
specimens of Bonnemaisonia asparagoides and is, we judge, a close 
relative of Acrochaetium, near which it was finally placed by 
Batters. The relationship of  Erythrocladia to Erythropeltis 
Schmitz, which also is disscused by Rosenvinge, is doubtless 
deserving of consideration, but, as Rosenvinge intimates, cannot 
be well determined until Erythropeltis is better understood than 
it is at present. Batters,* who had seen the type of Bangia 
ciliaris Carm., but not the type of Erythrotrichia discigera Berthold, 
which, in turn, must be considered the type of Егу ropeltis 
Schmitz, has hinted strongly that Berthold’s name may prove to 
be a synonym of Carmichael’s Bangia ciliaris. 
PLATE 30, FIGURES 1-7.  Erythrocladia endophloea 
1. About one quarter of a large mature thallus seen from above e, with most of the 
protoplasts espacio in. эмее only ші wae a the cells are hardly visible 
under ordinary ; SE g g to be formed near the center 
2, 3. Sections of the thallus of host plant, showing the Erythrocladia imbedded in 
the outer мро: walls of the cortical cells of the host. 
4. A young thallus m above, with outlines of protoplasts of the cortical cells 
of the host мили by dotted lines. 
5. тен thalli—apparently four or буе of independent origin (ог possibly from a 
ngle spore with the connecting cells obscure or absent). 
6. о. etc., іп surface view. 
7. A section of the cortex of the host plant, ж-з, а spore of the Erythrocladia 
penetrating the outer walls of the cortical ce 
Family NEMALIONACEAE}t 
ACROCHAETIUM Хаер. Sitzungsb. Kónigl. Bay. Akad. 
Wiss. Miinchen 18617: 402. 1861. J. Ag. 
Anal. Alg. 45. 1892 
Chantransia Триге | in Le Jolis, Мет. Soc. Imp. Sci. Nat. 
* Jour. Bot. 38: 374, 375. 1900. ; 
f The family name '' Helminthocladiaceae, ' being formed from a generic name 
ud applied to the type of Mesogloia, is, in its current sense, invalid under 
СП А ч $ can Code. LES 
he generic name ''Chantransia" has been used in so many different senses 
that it easily lends itself to confusion and ambiguity, but its use in the sense now 
commonly current (for Acrochaetium) is so clearly in violation of all of the codes of 
ене et it wn doubtless soon be permanently relegated to synonymy. 
Ф y S 
by ы че беши, the older пате of 
