386 PROCEEDINGS OF THE AMERICAN ACADEMY. 
involucre equaling disk, the scales subequal, about 2-rowed, 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, 44.5 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). 
Ximenesia foetida Spreng. Sys. iii. 606 (1826). 
Encelia foetida 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). 
Encelia amplexicaulis Hemsl. |. ec. (1881). 
Ximenesia cordata HBK. Nov. Gen. wh 228 (1820). 
Simsia cordata Cass. Dict. lix. 137 
Encelia cordata Hemsl. |. c. (1881). 
Ximenesia heterophylla HBK. 1. ec. 227. t. 380 (1820). 
Simsia heterophylla DC. Prod. v. 577 (1836), not Pers. I. ce. 
Simsia Kunthiana Cass. 1. ec. (1829). 
Encelia heterophylla Hemsl. |. c. 184 (1881). 
Simsia auriculata DC. 1. e. v. 577 (1836). 
Encelia mexicana Mart. in DC. |. e. 578 (1836), as syn.; Gray, Proc. 
Am. Acad. xix. 8 (1883). 
Ximenesia hirta Mart. |. 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, 
Palmer 440 part (N); Coanutia: Saltillo, Sept. 1898, Palancr-s22 : 
(FG); Parras, 16 May 1847, Gregg (G); Parras, Oct. 1898, Palmer 
427 (FGN); without definite locality, 1880, Palmer 493 (GN ); Dvu- 
RANGO: Durango, Sept. 1896, Palmer 657 (FGN); San Luts Porost: 
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.” 
