174 PITTONIA. 
leaves from almost orbicular to cordate-ovate, 2 or 3 inches 
long, on petioles as long; cauline ovate or oblong-ovate, 
mostly in two pairs only, sessile; all repand-denticulate, 
delicately eiliolate, otherwise glabrous: heads 1 to 3, iong- 
peduneled; involucres narrow and somewhat turbinate, of 
about 10 thin and green elliptic-lanceolate acuminate cilio- 
late and slightly glandular-puberulent bracts: rays rather 
few, deep-yellow, 7-nerved, 3-dentate, the middle tooth 
notably larger than the other two: achenes glandular- 
scabrellous; pappus fine, white. 
Wind River Mountains, Wyoming, 11 Aug., 1894, A. 
Nelson ; distributed for A. latifolia, for which it has no 
affinity. 
SOME RUDBECKIA SEGREGATES. 
By THOMAS V. Moors, C. 8S. P. 
An examination of the copious material of “ Rudbeckia 
hirta” preserved in the Herbarium of the Catholic University 
made a year since, led me to doubt that all the different 
forms labelled with that name ought to be included under 
that specific name; and subsequent study of this same 
materia augmented by the numerous sheets contained in 
the U. S. Herbarium, has led me to propose as new a num- 
ber of segregates. 
The typical R. hirta can be identified easily, by reference 
to the figure and full description given by Dillenius, on 
which figure and description Linnzeus founded the species; 
and I offer at the outset the following new description of 
this type; a description drawn from that common plant of 
Maryland and the District of Columbia which answers to 
the figure and diagnosis made by Dillenius in 1732, under 
the name Obeliscotheca integrifolia, etc. 
