202 POLYGAL.E AMEEICAN.E. 



longe pedunculati. Flores Ih lin. longi, rosei, pedicellis brevibus 

 gracilibus ; bractese lauceolatae, acumiuatse, decidiiae. Sepala 

 exteriora ovata, subciequalia, alae diinidio lougiores, corollam 

 excedentes. Carinae crista in fimbriis lougis gracilibus divisa ; 

 petala lateralia fere usque ad basim discreta, porrecta, carina sub- 

 lougiores. Stylus curvatus, medius multo dilatatus vel etiam 

 alatus. Cai^sula ellixDtica, emarginata. Semina i)ilis bruneis 

 sericeis ornnino obtecta ; arillodii appendices membranaceae, latae, 

 quam semen dimidio breviores. 



Btilivia ; open grassy slopes 7-8000 feet, Muna ; Pearce. Well- 

 marked by its distant whorls of thick rugose leaves, as much as 

 ^ to f inch apart, the long-stalked raceme, and the length of the 

 lateral i^etals. 



P. le/)tostachi/.'i, Shuttleworth in Gray, PI. Wright., i., 41. Caulis 

 .ascendens, glaber, angulosus, simplex, vel superne ramosus. Folia 

 4-5-verticillata, linearia, | poll, longa. Spicae terminales, valde 

 compactfB, ^-1 poll, longae. Flores sessiles, vix ^ lin. longi. Se^jala 

 exteriora ovata, marginibus membranaceis. Capsula elliptica. 

 Semina nigra, glabra, duplo longa quam lata ; arillodii appendices 

 dimidio semine breviores. 



Aspalaga, Florida, Eugel, 545 ; Tallahassee, Florida, Shut., 

 34 b. P. tenuis, Torr. MS. (non DC.) Gray (/. c.) quotes this in 

 a note as a good species, but without any diagnosis. It bears a 

 considerable resemblance to P. Hookeri, T. et Gr., and several 

 other North American forms, but is distinguished by the very 

 minute perfectly sessile flowers, the great intervals between the 

 whorls of leaves, and the less globose seed. 



The following United States species belonging to this section 

 are found also further south: — P. cniciata, L., in Mexico; 

 P. verticiUata, L., and P. Boykinii, Nutt., in Guatemala. The 

 following Brazilian s^Decies occur also in Mexico : — P. galioides, 

 Poir, var. major (P. aHpendoides, H. B. K.), juxta Topayam, 

 Hartw., 899; P. adenophyWt , St. Hil., Gal., 876; P. r/lochidata, 

 H. B. K. (P. sper(/ul(gfolia, St. Hil.), Liebm., 1,8; Orizaba, Bott., 

 820 ; P. trichoHpenna, L., Liebm., 14, 15 ; P. cariahilis, H. B. K., 

 Liebm., 27, 28. 



The two remaining native West Lidian species, P. spatJmlata, 

 Gris., and P. sat/inoidcs, Gris., belong also to the section with 

 verticillate leaves. 



Sectio F. Carina cristata ; folia alterna, nunqunm verticiUata, 

 aut linearia, tenuia, x)atula, aut parva, adpressa; semina strophio- 

 lata, biappendiculata. 



This section is by no means so well-defined and natural a one 

 as any of the jDreceding, approximating very closely to the next, 

 from which it differs chiefly in the leaves being much smaller, and 

 often very narrow or adpressed, and distinguished more by a certain 

 difl'erence in habit than anything else. In Martius's ' Flora 

 Brasiliensis ' I have included in this section twelve species, nearly 

 all belonging to Tropical and Temperate Brazil, south of 10° S. lat., 

 and several extending into the neighbouring countries, being 



