POLYGAL^ AMERICANS. 141 



P. Linclhemeri, Gray, PL Linclh., 150; well distinguished by 

 the remarkably geniculate rachis of the raceme. 



P. macradenia, Gray, PI. Wright., i., 39, with remarkably 

 hoary habit. 



P. puberiila, Gray, PI. Wright., i., 40, (= P. pubescens, 

 Schlecht. in Linn., xiv., 160), not of Mart. MS. 



P. Xanti, Gray, Proc. Amer. Acad., v., 163. 



Sectio B. Carina triloba, lobus medius integer, nee cristatus 

 nee fimbriatus, e stylo rectangulo curvato longe productus ; sejDala 

 exteriora duo inferiora plus minus coalita ; semina cylindrica, 

 sericeo-hirsuta, strophiolata ; arillodium album, galeatum, nunquam 

 appendiculatum. Herbse vel suffrutices, floribus sat magnis. 



The geographical distribution of this section is very nearly 

 the same as that of the first, extending from Southern Brazil, 

 throughout Tropical South America, the Isthmus, and the West 

 Indies to Mexico and the Southern United States. The two 

 inferior exterior sepals always more or less connate, frequently 

 almost to the apex, the protruded apex to the carina, slender style 

 remarkably bent at right angles and ending in a simj)le stigma, 

 and remarkably large fleshy erect arillode, which is never appendi- 

 culate, are accompanied by a smaller and generally more pubescent 

 habit. Only in the case of P. florihunda do we have a large woody 

 shrub with conspicuous flowers. 



*8. P. mo7iticola, H. B. K., v., 405 ; DC, Prodr., i., 830, 1 have 

 met with only in the Vienna herbarium (Endl., no. 1323), described 

 as from " Peruvia subandina vulgaris ad vias Cuchero," and in the 

 herbarium of M. Warming, collected atLagoa Santa (no. 552). It 

 must therefore be added to the Brazilian species described in the 

 ' Flora Brasiliensis.' It is a good-sized shrub, w^ell marked by its 

 thin apiculate leaves, the racemes frequently not terminal, and the 

 almost complete cohesion of the two inferior of the glandular-ciliate 

 sepals. " P. monticola, H. B. K., Venezuela, Moritz, 221," in the 

 British Museum herbarium, is certainly P. americana. 



8rt. P. munninoides, H. B. K., v.,'408; DC, Prodr., i., 331, 

 described from an imperfect specimen, appears to me identical 

 with the last ; but I have not seen it. 



9. P. fonbunda, Benth., PL Hartw., 58, is by far the hand- 

 somest and most showy plant of this section. It appears to grow 

 both on the mountains and on the walls of temjoles, and has been 

 gathered in Guatemala by Hartweg, 572 ; and in Mexico by Hartw., 

 447, Liebm., 22, and Wawra, as well as by Karwinski under the 

 name P. rivincBfolia. Misled by a general resemblance in habit, 

 Seemann (Bot. Her., 269) identifies Bentham's Central American 

 plant with St.Hilaire's P. ligustroides and P. oleqfolia from Brazil. 

 Independently of other characters, it is, however, amply distin- 

 guished by its completely connate inferior sepals, which are distinct 

 and imbricate in both these latter species. 



P. yrandifiora, Walt. Car., 179 ; Torr. & Gr., Fl. N. Am., L, 332. 

 This species, which extends from South Carolina to Louisiana and 

 Florida, is the only crestless Polygalu found east of the Mississippi. 



