166 . Rhodora [AUGUST 
study of synonymy as given by recent authors, but I have endeavored 
to weigh all the evidence and to look up the views of earlier authors 
regarding the names involved. Where possible I have made my own 
interpretation of the original description and have tried to learn if 
the type specimens of the species described have been examined re- 
cently and, if so, what they have been considered to be. In all in- 
stances where changes in nomenclature are made I have satisfied 
myself that the original descriptions are conformable to the require- 
ments of the * Vienna Code." Certain of the names involved lead to 
complicated questions, where personal judgment is a factor, and in 
this respect I wish to express my thanks to Dr. B. L. Robinson, who 
has been more than kind in his suggestions and advice. My thanks 
are also due to Prof. A. S. Hitchcock, who has been kind enough to 
read the paper and offer certain suggestion relating to types, and to 
Miss M. A. Day for her assistance in questions relating to bibliography. 
ERIANTHUS SACCHAROIDES Michx. 
This name is valid according to the American Code, but not accord- 
ing to the * Vienna Code." The oldest specific name of the plant is 
Anthoxanthum giganteum Walt. Fl. Carol. 65 (1788) and is cited by 
Michaux Fl. Bor.-Am. 1: 55 (1803) as a synonym of his species. 
According to the American Code the specific name giganteus cannot 
be taken up on account of E. giganteus Muhl. Cat. 4 (1813); but 
this does not invalidate its use, when the “ Vienna Code” is followed, 
as E. giganteus Muhl. was based on Andropogon alopecuroides L. Sp. 
Pl. 1045 (1753) which equals E. divaricatus (L.) Hitche. Contr. Nat. 
Herb. 12: 125 (1908). [Cf. Hitche. l. e.] Consequently by Sect. 7, 
Art. 50 of the * Vienna Code" the specific name giganteus 1s available 
for the species commonly known as E. saccharoides Michx. 
EnrawTHUS giganteus (Walt.) comb. nov. not Muhl. l. c. (1813). 
Synonymy in part. Anthoxanthum giganteum Walt. Fl. Carol. 65 
(1788). E. saccharoides Michx. Fl. Bor.-Am. 1: 55 (1803); Wat- 
son & Coulter in Gray Man. ed. 6, 637 (1890) excl. syn.; Hitche. in 
ed. 7, 93 (1908); Nash in Britt. Man. ed. 3, 68 (1907). E. al- 
opecuroides as to descr. Gray Man. 616 (1848) — this is a misappli- 
cation of the name by Prof. Gray as his description is that of E. 
giganteus (E. saccharoides Michx.) and not of E. divaricatus (L.) 
Hitche., which has a twisted awn and loose panicle. 
