1892. ] Briefer Articles. 125 
different genera are exactly alike in outward appearance, we cannot es- 
cape the conclusion that, in fact as in appearance, we have only one 
species. In every case of reputed Acerates auriculata crests have been 
found. The wings of the anthers too have been found to be, if not 
“decidedly auriculate,” at least “dilated,” certainly not “tapering at 
base.” All of which characters bring these specimens under Asclepias, 
§ NoruaceratEs, provided we allow the following modification of 
this subgenus. 
§ 3. NorHacrrates. Anther wings moreor less widening to the rounded 
base, which may or may not be notched or auricled; hood sessile, its apex 
emarginate or more deeply notched, with a narrow, wholly adnate, internal 
crest which may terminate above the middle of the hood without a horn, or 
may be more or less prolonged into a proper horn. 
The projection of this horn above the base of the hood-sinus gives 
the tridentate appearance mentioned in both the description of Acer- 
ates angustifolia Decaisne, and that of A. auriculata Engelm. I quote, 
the first from DC. Prodr. Vill, 522: “cucullis gynostegio sublongior- 
ibus, apice tridentatis ”; the second from Bot. Mex. Béund. 160: “cu- 
cullis gynostegio globoso sessili brevioribus apice leviter tridentatis.” 
And as for the stated discrepancy of relative length of anther-mass 
a hoods, and of the notch in the apex of the hoods, I have, in the 
material examined, observed all degrees of variation. 
The different names of this species, with dates, are as follows: 
mt eae angustifolius Nutt.; Trans. Am. Phil. Soc., Ser. 2, V. 201, 
37) 
Acerates angustifolia Decaisne, DC. Prodr. vill, 522, (1844). 
Acerates auriculata Engelm. Bot. Mex. Bound. 160, (1859). 
Asclepias stenophylla Gray, Proc. Am. Acad. xu, 72, (1876). 
There is another species named Asclepias angustifolia Ell., Sk. 1, 
ae ee So the specific name of Nuttall and Decaisne is not avail- 
it ode oa ise being the next oldest specific name, this species, 
Since «ee be named Asclepias auriculata (Engelm.). 
fom, Nebra td the above note there has been found ina collection 
Ne with, Ska a plant that represents the Acerates side of this species, 
» With the hoods destitute of horns, but the rudimentary crests 
IcER Siesta at least in their northern range.—Joun M. Howz- 
oe ent of Agriculture, Washington, D. C. 
Was A long interval has elapsed since the Bartram oak 
termined S. known and still its status has not been satisfactorily de- 
been found ome contend that itis ahybrid. Asthe oak in question has 
at widely separated localities, although limited to a narrow 
