VOL. XVI. NO. 4— BOTANICAL GAZETTE — APR., 1891. 



New or noteworthy Composite from Guatemala. 



JOHN M. COULTER. 



Mr. John Donnell Smith has placed in my hands for deter- 

 mination his recent and large collections of Compositae from 

 Guatemala. From the long and interesting list of species that 

 these collections contain, the following have been selected for 

 publication as being new or especially noteworthy. In the 

 final and critical study of species the herbarium and library of 

 Harvard University were used, and thanks are due to Dr. 

 Sereno Watson for his courtesy in supplying every facility for 

 such study. Mr. Henry K. Seat on, my assistant, made all the 

 dissections and rendered valuable service in generic deter- 

 minations. 



VERNONIA TRIFLOSCULOSA HBK. — Published descriptions 

 say that the leaves are "very entire/' but specimens from 

 San Luis,' Depart. Kscuintla {% D. S. 23T7), show that the 

 larger leaves are apt to have some callous serrulations. 



VERNONIA LEIOCARLV DC. — Abundant and very fine ma- 

 terial from Pacaya, Depart. Amatitlan (J. D. S. 2405), show 

 that the heads are at first cylindrical, becoming 4i ovate" 

 only with ripening and spreading, and that they are mostly 

 3-(sometimes 4)flowered, rather than l '5-flowered/ ' 



VERNONIA Sai.viv.k Hemsl., var. canest'eiis, n. var. — 

 Leaves white beneath with a dense pannose tomentum. 

 Coban, Depart. Alta Verapaz, March, 1881 (TurckhHm 583). 



STEVIA COMPACTA Benth. — Specimens fromVolcan de Agua 

 (7- A 5. 2327) show that the under surface of the leaves is apt 

 to be more or less woolly, and that the branches and inflores- 

 cence may have more or less floccose wool. 



Eupatorhim Donnell-Sniithii n. sp. — Usually tall and 



rather stout perennial herb, hirsutely pubescent especially 



above and in the inflorescence (the spreading hairs of the stem 



omewhat glandular and viscid), often glabrate below, leafy up 



to and in the inflorescence : leaves opposite, broadly ovate, 

 crenate-serrate, acute or acuminate, more or less pubescent 

 or even hirsute especially beneath and on the prominent veins, 



4 to 10 cm. long, 2.5 to 6,5 cm. broad, the lower long-petioled, 



