STANDLEY TREES AND SHRUBS OF MEXICO ] 595 



12. Galea urticifolia (Mill.) DC. Prodr. 5: 674. 1836, as C. urticaefolia. 

 Solidago urticifolia Mill. Gard. Diet. ed. 8. Solidago no. 30. 1768. 

 Caleacte urticifolia R. Br. Trans. Linn. Soc. 12: 109. 1817. 



Calea axillaris urticaefolia Robins. & Greenm. Proc. Amer. Acad. 32: 27. 1896. 



Tepic and Veracruz to Chiapas; type from Veracruz. Guatemala to Panama. 



Shrub 3 meters high or less, more or less pubescent; leaves petioled, the blades 

 ovate, 5 to 12 cm. long, 2 to 6 cm. wide, acute, serrate, veiny, rough above and 

 often beneath; heads about 1 cm. wide, numerous in terminal and axillary um- 

 belliform panicles; outer phyllaries usually herbaceous-tipped; achenes about 

 2.5 mm. long; pappus about 3.5 mm. long. "Quinina" (Chiapas); "tacote" 

 (Tepic); "hierba de la paloma" (Urbina); "pashcuane" (Otomi); "hierba de-la 

 rabia" (Chiapas, Oaxaca); "chichiquizo," "hoja amarga" (Oaxaca, Chiapas); 

 ■"jalacate" (Costa Rica). 



12a. Calea urticifolia axillaris (DC.) Blake, Contr. Grav Herb. n. ser. 52: 

 57. 1917. 



Mocinna serrata Lag. Gen. & Sp. Nov. 31. 1816. 



Galinsogea serrata Spreng. Syst. Veg. 3: 579. 1826. 



Calea axillaris DC. Prodr. 5 : 673. 1836. 



Durango, San Luis Potosi, and Veracruz; type locality not definitely stated. 



Similar; leaf blades eUiptic-lanceolate or lance-ovat*^, acuminate, 3.5 to 8 

 cm. long, 1 to 2.5 cm. wide. "Xalacatl;" "chilchaca" (San Luis Potosi); 

 "ponchishui" (Urbina). 



13. Calea trichotoma Donn. Smith, Bot. Gaz. 13: 299. 1888. 

 Chiapas. Guatemala; type from Cobd.n. 



Reclining or subscandent (?) shrub, 3 meters high or less; branches densely 

 sordid-pubescent; leaves short-petioled, the blades ovate, 3 to 5.5 cm. long, 

 obtuse or acute, griseously pilose-tomentose beneath; heads several or numerous, 

 in close umbellate cymes or cymose panicles; outer phyllaries herbaceous at 

 least above; achenes about 2.5 mm. long, the pappus about 5 mm. long. 



14. Calea grayii Klatt, Leopoldina 20: 96. 1884. 



Calea tomentosa A. Gray, Proc. Amer. Acad. 15: 38. 1879. Not C. tomentosa 

 Gardn. 1848. 



Known only from the type locality, between San Luis Potosi and Tampico. 



Branches densely canescent-tomentose; leaves slender-petioled, the blades 

 ovate, entire, rounded, veiny, glabrate above, denseh^ canescent-tomentose 

 beneath; peduncles densely tomentose; heads radiate; involucre tomentose; 

 pappus of 5 lanceolate paleae, half as long as the achene. (Description compiled.) 



15. Calea discolor A. Gray, Proc. Amer. Acad. 15: 38. 1879. 



Known only from the type, collected in Mexico without definite locality. 



Branches minutely incano-tomentose; leaves petioled, the blades ovate-oblong, 

 obtusish, entire, glabrous above, finely whitish-tomentulose beneath; heads 

 radiate, about 1.8 cm. wide; involucre glabrous; pappus of 4 or 5 small subulate 

 paleae. (Description compiled.) 



16. Calea brandegei Greenm. in T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 

 280. 1912. 



Puebla; type from Cerro de Coatape. 



Shrub; branches cinereous-tomentulose, glabrate, nearly naked above; leaves 

 petioled, the blades elliptic or linear-lanceolate, 1.5 to 2.5 cm. long, 2 to 7 mm. . 

 wide, acutish, entire, glabrate; heads yellow, about 8 mm. wide; rays 8 to 10; 

 achenes about 2 mm. long; pappus (of ray and disk) of 4 unequal, linear, bristle- 

 like, lacerate squamellae or awns, 1 mm. long or less. 



