22 PROCEEDINGS OF THE AMERICAN ACADEMY. 
147; on slopes of a barranca near Guadalajara, Pringle, no. 2904; and 
Michoacan, on grassy hills near Patzcuaro, Pringle, no. 4125; fi. July. 
* * Leaves ovate, abrupt or cordate at the sessile or subsessile base. 
ee 3. C. elegans, DC. Leaves thickish, quite glabrous above, finely 
pubescent upon the veins beneath, ovate to ovate-lanceolate, few-toothed, 
long-acuminate, considerably paler beneath: heads loosely or somewhat 
closely cymose at the ends of the branches: rays about 8 or 10, — Prodr. _ 
v. 674. Oteiza acuminata, Llav. Reg. Trim. Mex. 1832, 41.— Valley 
of San Luis Potosi, Schaffner, no. 237, and Parry & Palmer, no. 491; 
and in Tultenango Cafion, State of Mexico, Pringle, no, 4297, with 
heads more aggregated; fl. August till last of October. An imperfect 
specimen collected by Bates, 1846, in Mexico, without more precise 
locality, is probably of this species. 
7 4. C. multiradiata, Seaton. Herbaceous, erect or decumbent, 
with habit of the preceding but with sessile leaves thinner, less attenuate, 
appressed-pubescent upon both surfaces and scarcely paler beneath: heads 
on very long peduncles, 3 or 4 in number: rays 15 to 20.— Proc. Am. 
Acad. xxviii. 120. — Wooded slopes of Mt. Orizaba, altitude 10,000 feet, 
Seaton, no. 167, in part. In flower in August. With the type material 
of this species in the Gray Herbarium were associated specimens of a 
Sabazia and Tridax of similar habit. 
5. C. sabazioides, Hemsl. ‘Slender herb, 1 to 1} feet high, pro- . 
cumbent, rooting at the base, in habit very similar to Sabazia sarmentosa: 
leaves decussate, ovate, petiolate, acute, crenate, 3-nerved, hirsute : heads 
solitary, radiate, as large as in 7ridax: bractioles [chaff] scarious, un! 
nerviate, pale fuscous, oblong-ovate, 2-dentate beneath the gradually and 
narrowly acuminate summit: rays purplish white.” — Biol. Cent.- Am. 
Bot. ii. 206. Allocarpus sabazioides, Less. Linnea, ix. 590. — Near San 
Miguel del Soldado and La Joya, S. Mexico. No specimens exactly 
agreeing with this description have been seen by the writers, and the 
characters are here translated from the Latin of Lessing. 
Subgenus 38. Evucatra, Benth. & Hook. f. (extended). 
relatively small and numerous, in close corymbs or somewhat umbellate : 
rays short or none: scales of the pappus 7 to 20: leaves sessile or short- 
petioled, serrate or dentate (in one species subentire). — Gen. il. 391. 
* Inflorescences terminal, close, on long naked peduncles: upper leaves reduced to 
small oblong or linear bracts: heads homogamous : pappus often reduced oF 
wholly wanting. — Calydermos, Lag. 
+ Scales of the involucre densely fringed with yellowish glaridular-tipped hairs. 
6. C. thysanolepis. Slender erect herb, 18 inches to 2 feet high: 
stem simple, striate, densely pubescent, prolonged at the summit into 4 
Heads 
. 
oes Ny eee 
