OF ARTS AND SCIENCES: OCTOBER 14, 1862. 59 



bus, paniculis virgatis laxifloris. Corolla coccinea tubulosa, pi. m. 

 bilabiata, labio superiore erecto concavo, inferiore patente vel de- 

 flexo. AntherjB glabra?, loculis a basi ad suhapicem debiscentibus, 

 apice vero clausis, efFoetis ergo baud explanatis. Filamentum 

 sterile nudum. 



9. P. BARBATUS, Nutt. Elatus, floribundus ; corolla eximie bilabi- 

 ata, labio inferiore deflexo ad faucem vulgo bai'bato; antbera? loculis 

 (etiam in alabastro juniore divergentibus) maxime divaricatis. — 

 Mexico; common. 



iS. ToRREYi. (Gray, in Bot. Mex. Bound, p. 114. P. Torreyi, 

 Bentb. in DC. Prodr.) Corolla fauce minus barbata vel nuda, labiis 

 vulgo (prssertim superiore) paullo longioribus. — Rocky Mountains in 

 Colorado Territory to Northern Mexico. Clearly a mere form of P. 

 barbattts, tbe name of which was not well chosen. (581, Fendl. ; 440, 

 1474, Wright; 395, Hall & Harbour.) 



y. WiSLiZENi. (P. coccinea, Engelm. in Mem. Wisliz., p. 107.) 

 Pauciflorus, statura facie corollisque superne dilatatis P. imberbis, 

 sed loculis antherse divaricatis. — Chihuahua, Wislizenus. The speci- 

 mens are quite intermediate between P. barhatus and P. imberbis, the 

 corolla more bilabiate than in the latter, but less so than in the former, 

 especially than in the var. Torreyi, the lobes of the lower lip broader, 

 shorter, and apparently less recurved. The absence of beard in the 

 throat is of small consequence ; the strongly divaricate anther-cells 

 assign the plant to P. barbatus in preference. 



10. P. IMBERBIS, Trauttv. (P. Humboldtii, Don. C/ielone imberbis, 

 H. B. K.) Sesquipedalis, laxiflorus ; corolla superne sensim dilatata, 

 labiis brevibus, inferiore baud deflexo nee recurvo ; antherte loculis diu 

 parallelis (ut videtur nunquam divaricatis). Mexico. Under no. 1274 

 of Coulter's Mexican collection, I have both this and P. barbatus. 



§ 5. (Speciosi.) Herbae, pleruraque glaberrimre, foliis integerrimis, 

 caulinis sessilibus, floribus thyrsoideo-paniculatis speciosis. Co- 

 rolla e purpureo seu violaceo caerulea superne ventricoso-ampli- 

 ata, limbo breviter bilabiato, lobis rotundatis asqualiter patentibus. 

 Antherse laxe pilosse vel hirsutulas, vel in eadem specie nunc gla- 

 brae, loculis divaricatis a basi vix ad summum apicem debis- 

 centibus, efFoetis hand explanatis. 



11. P. GLABER. (P. glabra, Pursh. P. Erianthera, Nutt. in Fras. 

 Cat., non Pursh. The latter name frequently inappropriate, not pub- 



