RYDBERG: SOME SENECIOID GENERA—II 419 
28. Odontotrichum jatrophoides (H. B. K.) Rydb. 
Cacalia jatrophoides H. B. K. Nov. Gen. & Sp. 4: 169. 1820. 
The type locality is given as near Lake Cuitzeo, Michoacan. 
Schultz Bipontinus transferred the species to Senecio. 
Oaxaca: C. L. Smith 388; Rose 3040. 
GUANAJUATO: Pringle 4262. 
29. Odontotrichum tridactylitis (Rob. & Greenm.) Rydb. 
Cacalia tridactylitis Rob. & Greenm. Am. Jour. Sci. III. 50: 
159. 5: 
Oaxaca: E. W. Nelson 2080; Sierra de San Filipe, Pringle 
5841 (type). 
MoreE.Los: Pringle 9877, 6164. 
30. Odontotrichum Liebmannii (Buchinger) Rydb. 
Senecio Liebmannii Buchinger; Klatt, Leopoldina 24: 125. 1888. 
The type was collected between San Andres and San Miguel, 
Mexico, Liebmann 174. No specimens have been seen, but 
Klatt’s drawing of the type is at the Gray Herbarium. 
31. Odontotrichum pallescens (Klatt) Rydb. 
Senecio pallescens Klatt, Leopoldina 24: 126. 1888. 
_ The type was collected at Mesatlan, San Andres, Mexico, 
Liebmann 235, in the herbarium of the Botanic Garden at 
Copenhagen; Klatt’s tracing of the type is in the Gray Herbarium. 
32. Odontotrichum napellifolium (Schauer) Rydb. 
Cacalia napellifolia Schauer, Linnaea 19: 732. 1847. 
The type was collected in ae by Aschenborn. Hemsley 
transferred the species to Senect 
Hmatco: Pringle 10024; suasars in 1913. 
33. Odontotrichum delphinifolium Rydberg, sp. nov. 
Stem scapiform, about 4 dm. high, densely brown, woolly at 
the iad striate, glabrous or omic villous; foe leaves long- 
petioled, the petioles 1.5-2 dm. lo ene blades rentiogn in out- 
ab ; 
0-13 cm. wide; divisions oblanceolate in outline, again cleft 
into lanceolate lobes: sinuses rounded; stem-leaves often solitary, 
teduced, sessile, 3-cleft at the apex} head solitary; involucres 
