STANDLEY TREES AND SHRUBS OF IVIEXICO 1467 



well as terminal, little if at all exceeding the surrounding leaves; heads about 

 1 cm. long; phyllaries linear, attenuate, pale green, pubescent. 



Occasionally approaching the preceding species but in most cases readily sep- 

 arable. " Yoyochichil " (Seler). 



113. Eupatorium pringlei Robins. & Greenm. Amer. Journ. Sci. III. 50: 152. 

 1895. 



Oaxaca and Chiapas; type from Sierra de San Felipe, Oaxaca. 



Shrub 2 to 3.6 meters high; stems terete, buff; leaves opposite, petiolate, deltoid- 

 ovate, acute to acuminate, crenate-dentate except at the subtruncate base, 

 obscurely pulverulent-puberulent, paler beneath, about 4 to 5 cm. long and 3 to 

 4 cm. wide; petiole 1 to 1.5 cm. long; inflorescence ovoid and dense or forming a 

 long loose leafy-bracted terminal thyrse; heads 10 to 12 mm. long; phyllaries 

 linear, acute, brownish purple; corollas white to purple-tinged. 



114. Eupatorium chapalense S. Wats. Proc. Amer. Acad. 26: 138. 1891. 

 Jalisco and Durango; type from mountains about Lake Chapala, Jalisco. 

 Shrub with slender, fiexuous, terete, brownish purple branches; leaves opposite, 



petiolate, ovate, acute, serrate, scarcely pointed or distinctly acuminate at base, 

 sparingly puberulent above, woolly along the nerves beneath, 6 to 9 cm. long, 

 3 to 4 cm. wide; corymbs terminal, fastigiate; heads 10 to 12 mm. long, almost as 

 broad; phyllaries thin, green or purple-tinged, oblanceolate, acute, pubescent, 

 nearly equaling the florets; corollas white or nearly so; pappus double, of many 

 long inner capillary bristles and a few much shorter, slightly flattened and almost 

 scalelike outer ones. 



114a. Eupatorium chapalense var. salicifolium Robinson, Proc. Amer. 

 Acad. 35: 332. 1900. 



Jalisco; type from mountains about Lake Chapala. 



Leaves actually and relatively much narrower than in the typical form, lanceo- 

 late, 5 to 6 cm. long, about 1.5 cm. wide, pointed at base. 



115. Eupatorium tuerckheimii Klatt (as Turckheimii) , Leopoldina 20: 95. 

 1884. 



Chiapas. Guatemala and Honduras. 



Scarcely shrubby, 2 meters high, smooth throughout; leaves opposite, lanceolate 

 or lance-oblong, caudate-acuminate, cuspidate-denticulate, pinnate-veined, with 

 thickened margin; heads about 50-flowered, long-pediceled in terminal, rounded- 

 somewhat umbelliform corymbs; phyllaries well imbricate, lanceolate, acute. 



116. Eupatorium ehrenbergii (Schultz Bip.) Hemsl. Biol. Centr. Amer. 

 Bot. 2: 94. 1881. (Defined by one previously published though not name 

 bringing synonym.) 



Eupatorium ehrenbergii Klatt, Flora 68: 202. 1885. 



Hebeclinium macrocephalum Benth. PI. Hartw. 42. 1840. Not Eupatorium 

 macrocephalum Less. 



Eupatorium benthamii Klatt, Leopoldina 20: 90. 1884. 



Kyrstenia benthami Greene, Leaflets 1: 9. 1903. 



Known only from Puente de Dios in South Mexico, where long ago collected 

 both by Hartweg and by Ehrenberg. 



Suffruticose; stem terete; branches canescent-tomentose; leaves opposite, 

 petiolate, scabrid above, soft-tomentose beneath, serrulate, pinnate-veined; 

 heads about 50-flowered, 1 cm. high, equally broad; corollas purple; phyllaries 

 lanceolate, acute, subequal, grayish-tomentellous. 



117. Eupatorium perornatum. Klatt, Leopoldina 20: 9T). 1884. 

 Eupatorium liebmannii Hemsl. Biol. Centr. Amer. Bot. 2: 96. 1881. (Without 



diagnosis or described synonym.) 

 Hebeclinium liebmannii Schultz Bip.; Hemsl. loc. cit., in synonymy. 



