396 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



Pectis elongata Schottii Fernald.* Proc. A. A. A. S., xxxiii., 78. 

 "Much more slender in "its diffuse branches than the species, 

 leaves small, heads scattered and solitary in the axils, on capil- 

 lary 3-4-bracteate peduncles 2 or 3 cm long : involucre pale, 4 

 mm high ; pappus hardly equaling the akene. Serceania near 

 Maxcanii, Sept. 14, 1866" (Schott, 666, Cat. No. of Type 40483 

 Herb. Field Col. Mus.). 



Pectis linifolia Linn. Syst. , Ed. x. 1221. 



P. pcctinata ; Jacq. "Herb 2 feet high, stone walls near Iza- 

 mal, uncommon" (979). 



PECTIS PROSTRATA Cav. , Ic., iv.. 12. 



" Herb 6 inches high, common along roads and paths in the 

 forests about Izamal " (1092). Merida, Aug. 20, 1865 (Schott, 

 533\ 



Pluchea camphorata de C., Prod, v., 452. 



" Herb 6 feet high, abundant at Chulubmay, producing its pur- 

 ple flowers in March" (1699). 



PLUCHEA ODORATA Cass. Diet. Sc. Nat. xlii. , 3 Chalche 



Salt swamps at Sisal, Nov. 9, 1865 (Schott, p/5"). Specimens 

 gathered by Dr. Schott at Merida (/j) and by myself at Izamal 

 (Armour Expd 176} were doubtless introduced from the coast, as 

 the plant is used in Yucatec domestic medicine much as is bone- 

 set in the United States. 



PLUCHEA PURPURASCENS de C. , Prod. v. , 452. 



'' Herb 6 feet high, old fields about Izamal, uncommon, pro- 

 ducing its rose-colored flowers in October" (1002). 



Porophyllum Ervendbergii A. Gray, Proc. Am. Acad., xix., 35. 



Xpeehukil. 



Merida, at the Quinta del Obispo, Nov. 15, 1864 (Schott, 81}. 



SANVITALIA PROCUMBENS Lam., Jour. His. Nat. Par., ii., 176. 



Xkantumbub 



Merida, where it is used by the Mestizas as a remedy for the 

 spitting of blood, Nov. 29, 1864 (Schott, 14). "Herb 18 inches, 

 common at Cacalchen and Euan, producing its yellow and red- 

 brown flowers from June to March" (964). 



Sclerocarpus divaricatus B. & Hook, f., Biol. Cent. Am. Bot. ii., 

 164. 



Labcah, July 30, 1865 (Schott, 67}. " Herb 3 feet high, 

 abundant in old fields near Izamal, from July to Jan'y " (410 part, 



Senecio Berlandieri (de C.) Hemsl. Biol. Cent. Am. Bot., ii., 236. 

 Gynoxis de C. A climber among mimosa trees near Sisal 

 (Schott, 407}. 



* The species of this genus were determined by Mr. M. L. Fernald. 



