820 PROCEEDINGS OF THE AMERICAN ACADEMY 



length loosely flowered, and the stamens do not surpass the corolla. 

 As to the calyx-lobes, although ovate-oblong at maturity in the original 

 specimens of Douglas, they are sometimes much narrower, even linear- 

 lanceolate. They are about equally accrescent in all these species, 

 and also variable. The seeds have broader pits and less thickened 

 separating walls than the preceding species. More specimens are 

 much wanted. 



* * * Folia alterna, membranacea : flores laxe racemosi : corollas 

 rotato-campanulatae plicae clongatiB villoso-ciliatie per paria approxi- 

 mataj a staminibus remoti^ : testa seminum subcarnosa parum areo- 

 lata : biennes, glanduloso-viscid«, Alleghanienses. 



13. P. BiPiNNATiiiDA Michx., & var. buevistylis Gray, Man. 

 P. hrevistylis Buckley. 



§ 2. COSMANTHUS. Corolla subrotata, lobis fimbriatis, plicis nullis. 

 Ctetera JEuphacelice subdiv. ultimas. IlerboB annuoe, parvulce, Am. 

 Bor. Orientalis. — Cosmanthus Nolte. Cosmanthus § Eucosmanthus 

 A. DC. pro parte. 



14. P. PuRSHii Buckley; Gray, Man. ed. 1, p. 342. P. fimhriata 

 Auct. 



15. P. FiMBRiATA Michx. ; Gray, Man. ed. 2, p. 328. Perhaps only 

 a smaller and mountain form of the other. 



Var. ? BoYKiNi. Suberecta, ramosa ; racemis plurifloris demum 

 strictis, pedicellis fructiferis erectis calyce hand longioribus ; corollas 

 lobis multo minus fimbriatis. — Upper part of Georgia, Boykin. 

 Probably a state of P. fimhriata inhabiting a lower and drier region, 

 perhaps a distinct species. 



§ 3. COSMANTHOIDES. Placenta 3-8-ovulat£e, rarissime 2-ovu- 

 latse : semina verticalia, testa reticulata : corolla rotato-campanulata, 

 plicis nullis vel inconspicuis (pcrangustis) jier paria approximatis 

 a staminibus remotis : capsula subglobosa obtusissima. Herbae 

 humiles vel tenellae Am. Bor. Or. et Mex., hirsuto-pubescentes, foliis 

 pinnatifidis, floribus racemosis. 



* Herbae annuse, tenues, parce hirsutulie vel glabellte, foliis caulinis 

 pinnatifidis sessilibus : ovula in placentis nunc 3-4, nunc 2 ! 



16. P. GLABRA Nutt. Fl. Arkans. in Trans. Am. Phil. Soc. 5, p. 192. 

 A subsequente peraffini glabritie. exiguitate, calycis lobis ovalibus 

 oblongisve capsulam vix superantibus uimis difFert. 



