64 PROCEEDINGS OF THE AMERICAN ACADEMY 



calycem usque ad faucem valde ampliata carapanulata : pedunculi 

 abbreviati. 



23. P. Hartwegi, Benth. (P. gentianoides, Bot. Eeg. 1838, 

 t. 3 ; Bot. Mag. t. 3661.) Corolla bipollicaris, coccinea vel sanguinea, 

 superne sensim leviter dilatata tubuloso-infundibuliformis : pedunculi 

 2 - 3-flori elongati. 



* * * * Undique fere glabri ; foliis pinnatipartitis, segmentis an- 

 gusto-linearibus : panicula laxiflora : corolla purpurea, baud polli- 

 caris, superne ampliata, lobis subsequalibus : filamentum sterile 

 apice barbatum. 



24. P. DI3SECTUS, Ell. Bot. 2, p. 129; Chapm. Fl. p. 289.— 

 Georgia. 



o 



***** Glabri, vel pruinoso- seu viscoso-puberuli, angustifolii ; 

 foliis filiformi-subulatis linearibus vel lineari-spatbulatis, omnibus 

 integerrimis ; racemo simplici seu panicula virgata laxiflora. (Cf. 

 spp. subsequentis foliis quandoque integerrimis glabris.) 



■»— Inflorescentia stricte racemosa, i. e. pedunculis unifloris, infimis 

 rarissime bifloris ; corolla vix bilabiata. 



•1-+ Foliis angustissimis fere filiformibus glabris. 



25. P. TENUiFOLius, Benth. Elatus, ramulosus, foliosus, subpu- 

 berulus ; racemo elongato laxo ; corolla (pollicari purpurea ?) superne 

 valde ampliata, lobis brevibus ; filamento sterili imberbi. — Mexico. 



26. P. LARiciFOLius, Hook. & Am. (P. flifolius, Nutt. ined.) 

 Semipedalis, ccespitosus ; caudicibus crebre foliatis ; caulibus floridis 

 gracilibus simplicibus ; racemo 4 - 8-floro ; corolla (semipollicari purpu- 

 rea), tubo superne ampliato ; filamento sterili barbato. — Utah. 



27. P. AMBiGuus, Torr. in Ann. Lye. N. Y. & Marcy, Rep. t. 1 6. 

 Subpedalis ad bipedalem, paniculato-ramosus e basi lignescente ; foliis 

 inferioribus linearibus basi attenuatis, superioribus subulato-filiformi- 

 bus vel aceroso-subulatis ; racemis laxifloris ; corolla (" alba purpureo 

 tincta "5-8 lin. longa), limbo amplo patentissimo pi. m. obliquo ; fila- 

 mento sterili glabro. — Rocky Mountains of Colorado Territory to Ari- 

 zona. — Forma vera : corollee tubo semipollicari stepius incurvo superne 

 vix dilatato, limbo explanato semipollicem diametro, fauce fere undi- 

 que hirsutula; filamento sterili quandoque antheram parvara gerente. — 

 To this belong Bentham's var. foliosus, Fendler's no. 569 (probably, 

 for the flowers are wanting), 459, &;c. of Wislizenus, 1471 of Wright, 



