386 PROCEEDINGS OF THE AMERICAN ACADEMY. 



involucre equaling disk, the scales subequal, about 2-ro\ved, lance- 

 acuminate, glandular-hispid, herbaceous nearly throughout, slightly 

 or not at all striate, the inner sometimes purplish; rays about 10, 

 yellow, oval, pubescent on tube, faintly bidentate, 10 mm. long; disk- 

 corollas 6 mm. long (tube less than 1 mm.), puberulent, yellow turn- 

 ing purple; pales 9 mm. long, purplish and glandular above; achenes 

 black or mottled, appressed-pubescent, 4-4.5 mm. long, 2-2.4 mm. 

 wide, the 2 upwardly pubescent awns fimbriate at base. — Very vari- 

 able in leaf -form, even on the same plant, but not satisfactorily divisi- 

 ble even into formae. 



Coreopsis foetida Cav. Icon. i. 55. t. 77 (1791). 



Xivienesia foctida Spreng. Sys. iii. 606 (1826). 



Encelia focfida Hemsl. Biol."^Centr.-Am. Bot. ii. 183 (1881). 



Simsia ficifolia Pers. Syn. ii. 478 (1807). 



Coreopsis amplexicaulis Cav. Descrip. 226 (1802). 



Simsia amplexicaulis Pers. 1. c. (1807). 



Eiicelia amplexicaulis Hemsl. 1. c. (1881). 



Ximenesia cordata HBK. Nov. Gen. iv. 228 (1820). 



Simsia cordata Cass. Diet. lix. 137 (1829). 



Encelia cordata Hemsl. 1. c. (1881). 



Ximenesia heterophylla HBK. 1. c. 227. t. 380 (1820). 



Simsia heterophylla DC. Prod. v. 577 (1836), not Pers. 1. c. 



Simsia Kiinfhiaiia Cass. 1. c. (1829). 



Encelia heterophylla Hemsl. 1. c. 184 (1881). 



Simsia auriculata DC. 1. c. v. 577 (1836). 



Encelia mexicana Mart, in DC. 1. c. 578 (1836), as syn.; Gray, Proc. 

 Am. Acad. xix. 8 (1883). 



Ximenesia hirta Mart. 1. c. 578 (1836), as syn. 



Helianthus amplexicaulis DC. 1. c. 589 (1836). 



Simsia Schaffneri Sch. Bip. in Gray, Proc. Am. Acad. xix. 8 (1883). 



Specimens examined: Chihuahua: southwestern part, 1885, 

 Pedmer 440 part (N); Coahuila: Saltillo, Sept. 1898, Palmer 422 

 (FG); Parras, 16 May 1847, Gregg (G); Parras, Oct. 1898, Palmer 

 427 (FGN); without definite locality, 1880, Palmer 493 (GN); Du- 

 rango: Durango, Sept. 1896, Palmer 657 (FGN); San Luis Potosi: 

 Villa de Guadalupe, Sept. 1855, Schaffner 19 (G); sandy places near 

 San Luis Potosi, Aug. 1876, Schaffner 265 (G); woods about San 

 Luis^Potosi, 1876, Schaffner 389b (G)*°; sandy cultivated grounds, 

 1880', Schaffner 389a (G)*°; alt. 1830-3050 m., 1878, Parry & Palmer 



40 " ' Lamyrote ' incolarum." 



