OF ARTS AND SCIENCES. 121 
exceeding the involucre: achenes 3-3} lines long, linear, angled, 
minutely appressed-pubescent : pappus of the disk achenes of 2 palea- 
ceous awns equalling the achenes, and 3 much shorter oblong slightly 
fimbriate pale ; of the ray short paleaceous. — Rocky hills near Es- 
peranza, 8,000 ft., August (no. 855). Resembling 7. pedunculata, 
Lag., and 7. tenuifolia, Cav., in the characters of the flowers, but 
with narrower leaflets and more simple stems terminated by single 
peduncles. 
SeNEcIO OrizabeEnsis, Sch. Bip. Specimens collected on sandy 
plains, Mt. Orizaba, 13,500 ft., August (no. 219), accord in every way 
with the description of this species (Hemsl. Biol. Cent. Am. Bot. IL 
244), except in having runcinate radical leaves. 
Evryorsia RAMOsA. Suffrutescent, 2-5 inches high: stems 
decumbent or erect, slender, much branched, pubescent with spreading 
hairs: leaves short-petioled, oblique at the base, ovate or suborbicular, 
acutish, crenulate or very entire, glabrous above, sparsely hairy be 
neath, 2-3 lines long: stipules minute, triangular, lacerate: involucres 
solitary or somewhat corymbose at the ends of the branches, short- 
pedicelled, campanulate, glabrous, } line long: glands purple: a— 
pendages small, white, entire: styles very short, deeply bifid: capsules 
glabrous, the valves obtusely angled: seeds ovate, 4-angled, irregularly 
and transversely rugose.— Rocky slopes, Mt. Orizaba, 10,000 fty 
August (no. 495). Coulter’s no. 1447 from Real del Monte also 
represents small specimens of this species. It is cited by Hemsley 
(Biol. Cent. Am. Bot., IIT. 90) as Z. adenoptera, Bertol., but it is very 
distinct from that species, which has unequal involucral appendages 
and hirsute capsules. The specimens in the Gray Herbarium were 
unnamed, but the following characters had been noted upon the sheet 
by Dr. Engelmann: “ Stem and lower side of oblique ovate or orbicu- 
lar crenulate or entire leaves hairy : stipe 3-angular, ciliate: involucté 
with small white and wide appendages: styles divided to the middle* 
capsule obtuse-angled: seeds sharp-angled, dark, cross-grooved, 0.5 line.” | 
he specimens were mounted on the same sheet with Z. pilosula, : 
Engel., and the two are nearly related in their pubescence and flower 
and fruit characters, but Z. pilosula is a much smaller plant with dis- 
tinctly serrate leaves. The specimens from Mt. Orizaba, varying iroet : 
2 to 5 inches in height, differ only from Dr. Coulter’s plant in being { 
apparently more erect, and they somewhat resemble in habit E. Fen 
leri, Torr. & Gray, and smaller forms of Z. villifera, Scheele. 
ARUNDINELLA Depreana, Nees in Bonplandia, III. 84; Steud. 
Syn. Gram. 115; Fourn. Mex. Pl. Enum., Gram. 54. — Hills — d | 
eo # 
