ROBINSON AND FERNALD. — MEXICAN PLANTS. 117 



in the type, but the branches nearly smooth ; leaves elliptic-oblong, ^ 

 inch long, 2 lines broad ; fruit hisi)id, but the bristles fewer and shorter. 

 — Collected on the Sierra de las Gronillas, Sonora, at 5, HOC ieet, by 

 Mr. llartmun, 2 October, 1890 (no. 58) ; the same thing seems to have 

 been collected by Prof. Lemmon near Fort Huachuca, S. Arizona? 

 1883. Some of Mr. Hartmau's specimens show a tendency to inter- 

 grade with the type. 



Bellis orthopoda. Perennial; rootstock short, thick, erect, 

 giving off several tough fibres : stems 1-5, decumbent or suberect, 

 4—5 inches high, simple, mouocephalous, appressed pubescent, very leafy 

 to above the middle : leaves thick, entire, appressed pubescent ; the rad- 

 ical ones numerous, spatulate, obtuse, 9 lines long, 11-2 lines broad, 

 the cauliue linear-oblong, erect, ciliate, becoming gradually smaller and 

 acutish: peduncles 1-1^ inches long, appressed cinereous pubescent: 

 heads rather large for the genus, a little over an inch in breadtli ; in- 

 volucral bracts lanceolate, acuminate, cinereous pubescent upon the 

 membranaceous margin, 2^-3 lines long : rays about 30, light blue in 

 a dried state, 6 lines long. — Collected at Guachachic, Chihuahua, by 

 Mr. Hartraan, 25 June, 1892 (no. 523). This species resembles 

 closely the low and coarse forms of -S. integrifolia, Michx., but is 

 to be distinguished by its vertical perennial caudex and few simple 

 stems. 



Aster lepidopodus. Perennial : root a cluster of simple fibres : 

 stems several, slender, a foot high, scaly upon their spreading distinctly 

 decumbent bases, hirsute, simple or bearing several erect slender nearly 

 naked monocephalous branches: reduced basal leaves narrowly deltoid, 

 acute, entire, scarious, glabrate except upon the ciliated margins ; foliar 

 leaves of the stem oblong-linear, acutish, entire, erect, nearly an inch 

 in length, \\ lines broad, glabrous, except upon the strongly ciliated 

 margin and occasionally upon the midrib : heads about an inch in diam- 

 eter ; scales of the involucre 2(-3)-seriate, subequal, linear-lanceolate, 

 acuminate ; the dark herbaceous middle portion hirsute : rays 20-25, 

 narrow, pale rose-colored: achenes columnar, hirsute, 4-ribbe{l. — Col- 

 lected in pine forests about Chuchuichupa, Chihuahua, by Mr. Hart- 

 man. 14 June, 1891 (no. 697). A species apparently of the § Mega- 

 lastriim as regards involucre and achene, but more slender and less 

 rigid in habit than the other species of this group. 



Franseria nivea. Finely white tomentose or pale cinereous 

 throughout, 1-4 feet high : pubescence persistent except upon the base 

 of the stem: leaves alternate, 2 inches long, somewhat broader, 3-parted 

 to the base; parts deeply pinnately lobed; segments acutish, toothed; 



