26 PROCEEDINGS OP THE AMERICAN ACADEMY 



corollas, both of disk and ray ; the absence of ligule to the ray-corollas 

 (if they may be so called) ; by the conical receptacle ; and by some 



* * Herbaceous, commonly if not always perennial, with larger heads usually 

 solitary and conspicuously pedunculate, sometimes more numerous on the 

 branches and even cymosely disposed : recepacle from low-conical to flat, in 

 the same species. 



•*- Akenes not glandular. 

 E. c^SPiTOSUM, Dougl. in Lindl. Bot. Reg. t. 1167 ; the involucre doubtless 

 wrongly figured as gamophyllous, though this is sometimes the case. To this 

 I am obliged to refer all the forms collected under Buhla hinata in the Botany 

 of California, along with those under B. intefjiifvlia and even B. arnchnoidea, 

 arranging them under the varieties latifolium, achi/lauides, grandijlorum, leucophyl- 

 Itiin, mu\ inlcgrifulitim. A slender form is the B. lanuta, var. tenuifoUa, Torr. & 

 Gray, Fl. But the B. tenuifoUa, DC, is quite different, as the original specimen 

 and the description show. 



.(--t- Akenes, like the corolla-tube, glandular : stems slender, low. 



E. GRACiLE, the Buhia gracilis, Hook. & Arn. This is still known only by 

 Tolmic's specimens, from the Snake Biver district. It lias a loose floccose wool, 

 very narrow leaves, so far as known all entire, an involucre of about 10 oblong 

 bracts, a nearly flat receptacle, slender akenes, the breadth of which is exceeded 

 by the length of the pappus. 



E. Watsoni, the BuJiia leucophylln, in part, of Eaton, Bot. King Exp., wrongly 

 joined to the preceding in Bot. California. This is canescent rather tlian lanate, 

 fastigiatcly branclied, has leaves of cuncate or spatulate outline, and o-lobod 

 smaller heads, an involucre of or 7 oval bracts, only 5 or 7 rays, a conical 

 receptacle, shorter and thicker akenes, and a coroniform pappus of truncate and 

 laciniate paleae decidedly shorter than the width of the akene. 



* * * Annuals, with leaves apparently all alternate, small pedunculate heads 

 terminating lax and slender branches, pappus a crown of very small palea;, 

 or wanting in some flowers, and a conspicuously conical receptacle : the bracts 

 of the involucre are more commonly, but not always, gamophyllous. 



E- AMKiGUCM. — Balda amhifjua and B.parvijiora, Gray, Bot. Calif i. o82, where 

 the synonymy is given. The two supposed species prove to be mere forms 

 of one. 



BAIIIA, Lag. 



The typical species of Balda are suffruticose or perennial. Those of Adnpo- 

 pa/)/)H.s, IIBK. are annuals, one perhaps rather biennial; and this is the only 

 tangible difference. These species are more naturally placed under a series of 

 sections. 



§ 1. Suffruticose or perennial ; at least the lower leaves opposite and dissected 

 or lobed : palca3 of the pappus destitute of a distinct costa — True Balda. 



* Anomalous species, imperfectly ligulate, and with irregular very unequal 



pappus : leaves all opposite and sinuately lobed : flowers apparently white. 



B. siNL'ATA, Less, in Linna^a, vi. 160. B. ? (Anisostemma) nepetcefolid, Gray, 

 Proc. Am. Acad. v. 184. Mexico. 



