ROBINSON AND FKRNALD. MEXICAN PLANTS. 119 



sleuder, 5-9 lines in length : peduncles springing from the upper axils, 

 about 2 inches long, slightly thickened upward : heads large, radiate, 

 5 lines high, including the rays 9 lines broad ; scales of the involucre 

 narrowly linear, J- line wide, caudate-attenuate, 4 lines in length : ray 

 flowers 18-20, pale yellow; ligules 3 lines long, 3-toothed at the apex ; 

 disk flowers including acheaes 4h lines long : style branches of the lat- 

 ter with attenuate hispid appendages, those of the former smooth ; 

 achf nes oblong, black with thickened white margins, puberulent, scarcely 

 ciliolate, li lines long. — Collected in niches of dry rocks at Bade- 

 huache, Sonora, by Mr. Lloyd, 2 December, 1890 (no. 400). A 

 species nearly related to P. leptoglossa, Gray, and P. Palmeri, Wats. ; 

 distinguished from the former by its much more copious pubescence, 

 more attenuate involucral scales, and larger flowers ; from the latter 

 by its slender terete branches, and by its achenes which are scarcely 

 ciliolate instead of having a copious ciliation. 



Cacalia globosa. Caudex short, horizontal, giving off numerous 

 fibres : stem simple, flexuous, 8 inches in height, glabrate, except near 

 the somewhat fuscous-tomentose summit : leaves thickish, nearly or 

 quite glabrous, somewhat glaucous, cartilaginous upon the crenate- 

 dentate margins, obtuse, pinnately veined ; the radical ones deltoid, 

 1^- inches long, nearly as broad, cordate with a broad shallow sinus; 

 their petioles 1^ inches long, slender above, dilated below; the cauline 

 leaves for the most part consisting of ovate clasping cartilaginous 

 dentate phyllodia ; only the lower ones surmounted by an ovate or 

 deltoid crenate blade : heads about 6-flowered, densely packed together 

 in a globular inflorescence (9 lines in diameter) : involucral scales 

 obovate-oblong, 3 lines in length, with ciliate margins and tip, thickened 

 in the middle, especially near the summit : corollas 2:^ lines high ; the 

 linear lobes little exceeding the tube : pappus sparing. — Collected in 

 a moist meadow, Guachuchic, Chihuahua, by Mr. Hartman, 25 June, 

 1892 (no. 522). 



Philibertia ctnanchoides, Decsne., var. subtruncata. Leaves 

 narrow, attenuate, abrupt at the base or subcordate with a very 

 shallow open sinus and spreading auricles. — Collected at Fronteras, 

 Sonora, at 4,550 feet, by Mr. Hartman, 25 September, 1890 (no. 4), 

 The type both by description and authenticated specimens has deeply 

 cordate and usually broader leaves. No other differences have been 

 noted. 



Phacelia rupicola. Perennial, hirsute, subacaulescent : leaves 

 springing from an elongated thickish ascending caudex, deeply 

 pinnatifid ; blade oblong in outline, 2-3 inches long, equalling the 



