STANDLEY TKEES AND SHRUBS OF MEXICO 1497 



Plant strigose, hirsute, or hirsutulous, at least in lines; branches not 

 angled. 

 Involucre about 5-seriate; leaves thick, the middle and upper chiefly 



subulate or linear, 2 cm. long or less 1. A. lima. 



Involucre about 3-seriate; leaves thin, the middle ones lanceolate or 

 linear-lanceolate, 3 to 9.5 cm. long. 



Leaves 3 to 5 cm. long; involucre 5 mm. high 2. A. jalapensis. 



Leaves 5 to 9.5 cm. long; involucre 6 to 7 mm. high- 3. A. bullatus. 



1. Aster lima Lindl. in DC. Prodr. 5: 230. 1836. 



7Aster 7noranensis H. B. K. Nov. Gen. & Sp. 4: 93. 1820. 



Aster lindenii Schultz Bip. in Seem. Bot. Voy. Herald 302. 1856. 



Aster ehrenbergii Schultz Bip. in Seem. Bot. Voy. Herald 302. 1856. 



?Aster purpurascens Schultz Bip. in Seem. Bot. Voy. Herald 303. 1856. 



San Luis Potosi to Chiapas; type from Mexico, without definite locality. 



Slender, herbaceous or suffrutescent below, up to 60 cm. high, the stem 

 strigose or sometimes hirsute; lower leaves linear to lanceolate, about 3 cm. long, 

 3 to 7 mm. wide, entire, usually deciduous, the upper linear to subulate or lance- 

 subulate, often reduced to awl-shaped bracts on the peduncles, rough-margined; 

 heads solitary at tips of stem and branches, 1.5 to 2.5 cm. wide; involucre 5 to 

 8 mm. high, strongly graduate, the phyllaries linear or linear-lanceolate, with 

 conspicuous rhombic green tips, whitish and indurate below, somewhat pubes- 

 cent; rays "white." 



2. Aster jalapensis Fernald, Proc. Amer. Acad. 35: 572. 1900. 

 Veracruz; type from Barranca de Chavarrillo. 



Herbaceous or suffrutescent, decumbent at base, about 25 cm. high, hirsute in 

 lines; leaves narrowly lanceolate or oblanceolate, 3 to 10 mm. wide, narrowed into 

 a petioliform base, few-serrulate, hirsute-ciliate toward base; heads few, about 

 1 cm. wide; involucre graduate, the linear obtusish phyllaries slightly ciliate, 

 appressed; rays white. 



3. Aster bullatus Klatt, Ann. Naturhist. Hofmus. Wien 9: 359, 1894. 

 Mexico; type from "Inquila." Guatemala. 



Herbaceous or suffrutescent, decumbent at base, about 35 cm. high, hirsutulous 

 above in lines; leaves lanceolate or linear-lanceolate, 5 to 8 mm. wide, narrowed 

 to a petioliform, hirsute-ciliate base, sharply serrulate above; heads panicled, 

 about 1.5 cm. wide. 



4. Aster palmeri A. Gray, Proc. Amer. Acad. 17: 209. 1882. 

 Tamaulipas and San Luis Potosi. Texas; type from Corpus Christi Bay. 

 Frutescent, up to 1.3 meters high, somewhat viscid, much branched; leaves 



linear, 2 cm. long or less, 1.5 mm. wide or less, thick, 1-nerved, entire; heads 

 solitary at tips of bracteate peduncles, turbinate, 7 to 11 mm. wide; involucre 

 about 5-seriate, graduate, the oblong, obtuse or acutish phyllaries indurate, 

 appressed, with scarious lacerate margins and obscurely greenish, granular- 

 viscid apex; rays 8 to 10, short, white. Plant with the aspect of a Baccharis. 



5. Aster carnosus A. Gray, Syn. Fl. 1^: 202. 1884. 

 Linosijris 1 carnosa A. Gray, PI. Wright. 2: 80. 1853. 

 Bigelovia intricata A. Gray, Proc. Amer. Acad. 17: 208. 1882. 

 Leucosyris carnosa Greene, Fl. Franc. 384. 1897. 



California and Nevada to Arizona; type from west of the Chiricahua 

 Mountains, Arizona. Apparently not yet collected within the limits of Mexico. 



Rigidly much branched, frutescent, 1 meter high or less, pale and glaucescent; 

 leaves linear, fleshy, mostly 1 cm. long or less, nerveless, the upper reduced to 

 scales; involucre 5 to 7 mm. high, graduate, the linear, cuspidate-acute or acumin- 

 ate phyllaries appressed, without herbaceous tips. 



