46 



Willugb 



Clil 



The Botanical Gazette. [February. 



„,..ieya gloT)OSa, n. sp.— A glabrous twiner or some- 



what puberulent in the inflorescence: leaves ovate and acum- 

 inate, obtuse at base, with margins (-which are obscurely muc- 

 ronulate) revolute, 5-ribbed near the base and prominently 

 cross-veined, long-petioled, blade 9 to 12™^ long, 5 to T 

 broad: heads sessile in glomerate (head-Hke) clusters which 

 are borne (one to seven in number, usually three or five) at 

 the ends of the opposite somewhat wide-spreading branches 

 of an elongated bracteate raceme: involucral scalcs very short 

 (about one-third aslongas the corolla and pappus), broad and 

 truncate (sometimes a littleTiotched), glandular-puberulent at 

 apex: pappus white: corolla narrowly funnel form: achenes 

 glabrous (or very sparsely pdbescent under a lens). — Santa 



March 1892, Heyde 



Lnx 3,42)0. 



This : 



pccies Is listed as Mikania globosa Coulter, n. sp. in 

 the forthcoming part of John Donnell Smith's "Enumeratio 

 Plantarum Guatemalensium," where it seemed desirable to 

 make the nomenclature consistent with that of the other 

 parts. The inflorescence is striking, with its display of 

 globose heads, and the spccies resembles closely in habit and 



structure Mikania smilacma DC. of Brazil. 



WlLLUGBAEYA SCANDENS (L.) Kuntze. {Mikania scandens 

 Willd.)— Santa Rosa, Depart. Santa Rosa, alt. 3-4,000", 

 June 1892, Heyde & Litx 3,434. A form with purple flowers 

 and reddish pappus, which is easily separated from the 

 typical form, but which is referred by Hemsley to M. 

 scajidens. 



Coleosanthus Pacayensis. {Brickellia Pacayensis Coulter). 



Teocinte, Depart. Santa Rosa, alt. 2,500", January 1893, 

 Heyde &■ Lux 4,21^. 



ASTER SPINOSUS Benth. — SantaRosa, Depart. Santa Rosa, 



alt. 3-4,000" 



Heydc 



and 4,210. The development of the characteristic spiny 

 branches in these Guatemalan forms is much stronger than in 

 the forms heretofore collected in Northern Mexico and ad- 

 jacent United States; a development that appears also in 

 specimens from Costa Rica. The spines are often very strong 

 and thick set, flattened iike sword blades, 2, 5 to 5™ long, 

 evidently doing leaf-work, while the leaves are reduced to 

 the merest rudiments, very different from the "soft subulate 

 spines" of the more northern forms. The longer spines fre- 

 quently branch. 



