STANDLEY TREES AND SHRUBS OF MEXICO 1465 



104. Eupatorium tomentellum Schrad. Ind. Sem. Hort. Gott. 1833: 3. 

 pi. 3. 1S33. 



Eupatorium smithii Robinson, Proc. Amer. Acad. 35: 340. 1900. 



Oaxaca and Puebla. Guatemala. 



Rust.y-toinentellous shrub 0.9 to 1.5 meters high, with curved or flexuous, more 

 or less hexagonal branches; leaves deltoid-ovate (rarely ovate-oblong), rounded 

 at the apex and at the basal angles, crenulate, shallowly cordate at base, gray- 

 green and pulverulent above, rusty-tomentellous beneath, 2 to 5 cm. long, 

 equally wide; corymbs convex, leafy-bracted at base, 4 to 6 cm. in diameter; 

 phyllaries narrowly oblong, acute, green, often purple-tinged, gray-tomentellous; 

 corollas purple. 



105. Eupatorium loesenerii. Robinson, Proc. Amer. Acad. 35: 336. 1900. 

 Oaxaca; type from calcareous hills at Las Sedas. 



Similar to the preceding, but taller, 1.5 to 2.5 meters high; cortex buff to gray; 

 tomentum on young parts and lower leaf surface very rusty; leaves round- 

 ovate, entire or obscurely denticulate, broadly rounded at tip, abruptly pointed 

 to rounded or shallowly cordate at base, ochraceous-tomentellous beneath, 

 3 to 7 cm. long; petiole 1.5 to 3.5 cm. long; corymbs usually 9 to 13 cm. wide; 

 phyllaries oblong, obtuse, ochraceous, gland-dotted. 



106. Eupatorium. malacolepis Robinson, Proc. Amer. Acad. 44: 618. 1909. 

 Durango and Tepic; type from San Rani6n. 



Nearly herbaceous, lignescent onh* toward the base; stem decumbent, 0.3 to 

 1.2 meters high, terete, brown, bristling with spreading articulate rusty-brown 

 hairs; leaves opposite, ovate, acuminate, serrate except toward the obtuse to 

 rounded base, membranaceous; inflorescence compound, somewhat irregular, the 

 individual corymbs rather dense, 3 to 5 cm. wide; heads about 4 to 4.5 mm. 

 high; phj'llaries oblong, obtuse, green, subscarious, erose, dorsally tomentellous. 



107. Eupatorium conspicuum Kunth & Bouche, Ind. Sem. Hort. Berol. 

 1847: 13. 1847; Ann. Sci. Nat. III. 9: 315. 1848. 



Eupatorium grandifoUum Regel, Gartenflora 1: 102. pi. 12. 1852. 



Kyrstenia grandifolia Greene, Leaflets 1: 9. 1903. 



Oaxaca and Morelos; originally described from material cultivated at Berlin 

 and stated to have come from Mexico. Guatemala. 



Seemingly herbaceous or nearly so, but reported to bee ome a shrub about 

 2 meters in height; branchlets hexagonal; leaves deltoid-ovate, acute to acumi- 

 nate, serrate (usually rather sharply so) even to the abrupt acumination at the 

 point of attachment, thin, green on both surfaces, 7 to 12 cm. long and wide; 

 petiole 5 to 12 cm. long, winged at summit; corymbs terminal and subterminal, 

 rather loose, often exceeded by the surrounding foliage; heads about 40-flowered, 

 5 to 7 mm. high; phyllaries lanceolate, acute, green, pubescent; corollas white. 

 107a. Eupatorium conspicuum var. pueblense Robinson, Contr. Gray 

 Herb. n. ser. 68: 12. 1923. 



Puebla; type from rocky slopes, Boca del Monte. 



Stems terete to the inflorescence; leaves with basal acumination entire. 



108. Eupatorium oligocephalum DC. Prodr. 5: 166. 1836. 

 Eupatorium erythrocomum Robinson, Proc. Amer. Acad. 43: 31. 1907. 



State of Mexico; type recorded merely as from Mexico, where collected by 

 Haenke; the species apparently rediscovered on steep slopes of Mount Ixtac- 

 cihuatl by Dr. Purpus. 



Suffrutescent; stems several, branching, curved-ascending, slender and at 

 most fruticulose, dark purple, finely pubescent; leaves opposite, ovate-lanceolate, 

 acute, serrulate, rounded at base, thickish-membranaceous, green and glabrous 

 above, dark purple and sparingly pubescent on the nerves beneath, 1 to 3 cm. 



