\ 



lOO 



The Botanical Gazette. 



[April, 



acute involucral bracts, merely 3-angled ray achcnes, and 

 broadly-win<jed disk achcnes. Much more nearly related to 

 Z. trachylepis Hemsl., but differs in its longer-pedunculate 

 heads, acute involucral bracts, very acute or acuminate 

 (*'rounded at apex* ' in Z. trachylepis) chaff and unequal awns, 

 TlTIIONIA TUB/I^:formis Lass. — Specimens collected at 

 Pacaya, Depart. Amatitlan {J. D. S. 2390), show a peculiar 

 habit. All the specimens in the Gray Herbarium are tall 

 branching plants, while many of these are low and widely 

 divaricate-branched at the very base. 



N 



Melanthera hastata Rich. — It is cvidcnt that.this 



Pinula and 



(7 



'/, 



as in specimens from 



M. 



co 



1- 



to hastately 3-lobcd {M. hastata). 



Encelia Mexicana Mart. — This variable species vv 

 lccted at Laj^una Amatitlan {J. D. S. 2408), and in comparin<r 

 it with spccimens in the Gray Herbarium it seems evident 

 enough that it should be considered to include E. suharistata 

 Gray, E. heterophylla Hemsl. , E. fi 

 Hemsl., as indicated by Dr. Gray in an herbarium note 



Spilantiies REPENS Michx. has been heretofore rcported 



only from the southern United States. It now comcs from 

 Coba«, Depart. Alta Verapaz, alt. 4300 feet (y. D. S. 10 14-). 



Spilanthes Beccahunga D C— Spccimens from Ducfias. 

 Depart. Zacatepequez, alt. 5000 feet (J. D. S. 2125) .show 

 that the achenes are often pubescent. 



BiDENS IIETEROSPERMA Gray.— Specimens from Guate- 



(7 



that the achenes are not always glabrous. 



Bidens Antiguensis n. sp. — § Psilocarp^a. Closely re- 



mbling B. lencantha Willd. but the rays (mostly present) 

 narrowly oblong, acute, bright yellow (8 to 12 mm. long), 

 and the 2 (rarely 3) rigid awns perfectly smooth and widely 

 divaricate : exceedingly variable in pubescence, from glabrous 

 to pilose-pubescent. — Antigua, Depart. Zacatepequez, alt. 

 5000 feet, April, 1890 (J. D. S. 2354); San Lui.s, Dcpart. 



(7 



Senecio Donneii-Sniithii 



.9. 2375). 



1 n. sp 



. — A very stout woolly- 

 pubescent perennial : leavcs alternate, thick, Very broadly 

 ovate to rotund in outline, cordate at base, undulately lobed 

 and margincd with blackish mucronulations, glabrous above. 



