Robinson and Greenman—NMexican Plants. 153 
green and puberulent above, paler and pubescent beneath, 2 to 24 
inches long, nearly as broad, 3-nerved at very base; lateral nerves 
soon branched: petioles 9 lines long, tomentulose: heads on short 
lateral leafy branchlets, slender-pedicelled, nodding or pendulous, 
6 to 7 lines long, about 15-flowered: floral leaves ovate-lanceo- 
late, acuminate or attenuate, serrate or subentire, subsessile: ped- 
icels 4 to 6 lines long, tomentulose: involucral scales regularly 
imbricated in about 4 series, all obtuse, tomentulose and some- 
what arachnoid-pubescent: achenes 23 lines long, puberulent.— 
Collected by C. G. Pringle, on Sierra de San Felipe, Oaxaca, alti- 
tude 10,000 feet, 24 December, 1894 (No. 6114). 
BrickeLuia LanciFouia. Tall, 5 to 8 feet high: branches 
slender, terete, striate, tawny, tomentulose and slightly scabrous : 
leaves all opposite, lanceolate, acuminate, narrowed at the base, 
obsoletely serrulate, scabrous above, paler reticulated and soft 
glandular-tomentulose beneath, 2 to 3 inches long, 10 to 12 lines 
broad; petioles 4 to 7 lines long, fuscous-tomentulose : flowering 
branchlets opposite, 38-6-headed, shorter than or considerably 
exceeding the leaves; pedicels slender, glandular-pubescent : 
heads nodding, 12-flowered, 6 to 9 lines long: involucral scales 
glabrous except at the obtuse mucronate tip, purplish, finely 
striate, lucid, imbricated in 4 or 5 very unequal series: achenes 
villous, at least when young.—Collected by C. G. Pringle, on 
Sierra de San Felipe, Oaxaca, altitude 8,000 feet, 3 January, 1895 
(No. 6109). 
GRINDELIA SQUARROSA Dunal, var. HIRTELLA. Branches and 
lower surfaces of the leaves covered with a fine slightly roughish 
pubescence; the type and other varieties being glabrous through- 
out and having the branches often lucid.—Collected by C. G. 
Pringle, on hills, Las Sedaz, Oaxaca, altitude 6,000 feet, 16 
August, 1894 (No. 4805). 
ACHYROCLINE DEFLEXA. Stems erect, 3 to 4 feet high, strict, 
branching above, lanate: leaves oblong-lanceolate, acute at both 
ends, mucronate at apex, scarcely petioled at base, mostly 
deflexed or pendulous, sparingly arachnoid and green above, 
densely lanate and white beneath, 14 to 3 inches long, 5 to 9 lines 
broad; margins somewhat revolute, irregularly subcrenulate : 
heads glomerate, about 5-flowered; glomerules corymbous; invo- 
lucral scales about 9, oblong, obtusish to acutish, pale straw-color 
to silvery white: flowers all fertile, only one hermaphrodite: 
achenes ovate, glabrous.—Collected by C. G. Pringle, on Sierra 
de San Felipe, altitude 7,000 to 8,000 feet, November, 1894 (No. 
6054). The other species of this genus hitherto attributed to 
Mexico have (ace. to descr.) much smaller, narrower leaves, and 
more deeply colored involucral scales, although the latter feature 
may very likely vary with age or change in drying. 
SIEGESBECKIA REPENS. Perennial: stems several, decumbent 
and rooting at the base, sending out procumbent branches, ascend- 
ing a foot or more in height, purplish, glandular-puberulent, about 
twice dichotomously forked; upper branches slender, erect: leaves 
