74 . PLANT,?: WRIGHTIAN.E. VI. 



E. soLiDAGiNiFOLiUM, Gray, 1. c. ; var. caulibiis 1 - 2-peclalibus subsimplicibus 



herbaceis e basi suffrutescente pubescentibus ; foliis ovato-lanceolatis parce serratis 



mao-is venosis puberulis ; paiiicula magis evoluta ; capitulis 5 - 7-flons. — "With the 



foregoing. (1146.) — These fine specimens require that the character of the species 



. should be a little reformed. 



E. AGERATiFOLiuM, DC, var. 1 herbaceum; caulibus basi tantum suffrutescente; 

 foliis sajpius pi. m. cordatis. — Mountains, east of Santa Cruz, Sonora (a small- 

 leaved form) ; also at Guadalupe Pass, and at tlie copper mines, under trees (a large- 

 leaved form), Oct. (IIJ^T-) — Stems one to three feet high ; the foliage in the dried 

 specimens somewhat aromatic. — The longer petioles, acute scales of the involucre, 

 and the pubescent achenia distinguish this from E. aromaticum. Although the 

 stems are herbaceous nearly or quite to the base, it certainly is not specifically dis- 

 tinct from E. ageratifolium, var. Texense, which, like the present specmiens, has from 

 12 to 22 flowers in the capitula. — The pappus in all my indigenous specimens 

 is nearly as long as the corolla ; but in a plant raised in the Cambridge Botanic 

 Garden from Lindheimer's Texan seeds, the pappus is only half the length of the 

 corolla; whence I suspect that E. Berlandieri, DC. belongs to the same species. 



E. SoNORJ3 (sp. nov. Subimbricata) : caulibus herbaceis gracilibus assurgentibus 

 paniculato-ramosis pubescentibus ; foliis longe petiolatis oppositis membranaceis 

 deltoideis acuminatis grosse dentatis basi 3-5-nerviis puberulis; corymbis oligo- 

 cephalis ; involucro 24:-fioro subbiseriali, squamis oblongis bi - trinerviis, exterio- 

 ribus acutiusculis pubescentibus, interioribus obtusis ; corollis carneis ; acheniis 

 acute angulatis, angulis hirtellis. — Crevices of rocks, in a mountain ravine, near 

 Santa Cruz, Sonora; Sept. (1148.) — Stems 10 to 20 inches long, often decumbent, 

 striate. Leaves 12 to 18 lines long, on petioles of 4 to 10 lines in length, thin, con- 

 spicuously acuminate, deeply dentate with 6 or 8 strong and spreading teeth, or the 

 upper with 3 or 4 on each side, truncate at the base, not cordate, the smaller raraeal 

 ones sometimes contracted at the base. Involucre two lines long. Pappus rather 

 shorter than the corolla. — Allied to E. Schiedianum, DC; from which its smaller 

 heads, and smaller, more triangular, abruptly long-acuminate and incisely toothed 

 leaves distinguish it. From E. multinerve, Bcnth., which seems to be E. Schiedia- 

 num 7. diversifolium, DC, it differs in nearly the same particulars, but I fear not 

 sufficiently. 



CoNocLiNiuM DissECTUM, Gray, PI. Wright, j). 88, var. (= No. 259). Valleys, 

 between Eagle Springs and the Rio Grande; June. (1149.) 



Mach^eranthera tanacetifolia, Nees, Ast, j). 224 ; Gray, PL Wright, p. 90. 

 Valley of the Pecos, in alluvial soil; June. Also near the San Pedro, Sonora, in 

 low, damp soil ; Sept. (1150.) 



M. TANACETiFOLiA, var. liumilis (spithamsea) ; involucro subturbinato, appendici- 

 bus foliaceis squamarum brevibus niinus patentibus. — Near Ojo de Gavilan, New 

 Mexico ; Aug. (1151.) — The green tips of the involucral scales are scarcely more 

 prolonged than in some forms of M. canescens. 



M. TANACETIFOLIA, var. pyguisea (3 - 6-pollicaris) ; capitulis multo minoribus ; 

 involucro hemisphserico, squamis breviter appendiculatis. — Dry, stony hills, valley 



