OP ARTS AND SCIENCES: JUNE 14, 1870. 273 



(G. LANATA, Lindl. Jour. Lond. Hort. Soc. 3, p. 74, said to come 

 from Mexico, of which I know only the character, is probably a form 

 of G. virgata or of G. Jilifolia.) 



§ 8. ELAPIIOCERA, Nutt. Flores capitato-congesti, bracteati, raro 

 cymoso-laxiusculi. Corolla (alba) hypocrateriformis, tubo calycis 

 lobossnepius mucronato- vel cuspidato-apiculatos (baud pungentes) 

 adajquante vel paullo (rarius duplo) superante. Stamina corol- 

 las lobis ovalibus oblongisve plus minus breviora, sinubus saapius 

 inserta. — Herbas biennes vel perenries vita} ut videtur b re vis, 

 nunc annua}, humiles ; caulibus fere semper lanoso-pubescentibus ; 

 calycibus bracteisque pilis longis viscidulis multiarticulatis crini- 

 tis ; foliis semel pinnatifidis vel integris. 



* Folia integerrima angustissima : flores capitato-congesti : filarnen- 

 ta gracilia, exserta, sed coi'olla} lobis breviora. 



3G. G. Wrightii, n. pp. Caulibus virgatis rigidis circa pedalibus 

 e basi lignescente seu radice forte perenni? usque ad apicem foliosis ; 

 foliis rigidis cuspidato-mucronatis ; bracteis lato-lanceolatis hinc inde 

 laciniatis cum calycis lobis subulatis aristato-cuspidatis ciliatis ; corolla} 

 lobis oblongis tubo parum exserto (I'm. 4 longo) dimidio brevioribus ; 

 antheris brevi-oblongis; ovulis in loculis 3-4. — Western frontiers of 

 Texas, on the Rio Grande forty or fifty miles below El Paso, C. Wright, 

 no. 496. In habit like a Hugelia: flowers white or faintly bluish. 



37. G. Gunnisoni, Torr. & Gray, Pacif. R. R. 2, p. 129, t. 9. 

 Annua, subglabra, sparsifolia, laxe paniculato-ramoso, ramis capi- 

 tulo parvo quasi pedunculato terminatis ; ovulis in loculis 2-3. — 

 The figure is characteristic. We have it only from Green River, 

 Utah, Kreusfeldt, and San Juan, New Mexico, Newberry. The plants 

 referred to in Bot. Mex. Boundary are different: Wright's 1642 is 

 G. jilifolia var. diffusa. 



» * Folia aut omnia aut nonnulla in lobos paucos angusto-lineares 

 partita, raro omnia integra : filamenta corolla} lobis breviora : flores 

 arete capitato-glomerata. — Herba} biennes vel perennes, caudice 

 vel radice dura. 



38. G. spicata, Nutt. PI. Gamb. 1. c. Caulibus validis erectis 

 (4-10-poll.) superne capitula plurima in spicam longe virgatam inter- 

 ruptam foliosam congesta gerentibus; foliis nunc trifidis nunc integerri- 

 mis cum calycis lobis fere muticis ; corolla} lobis oblongo-ovatis tubo 

 vix exserto breviore ; antheris fauce subsessilibus ; ovulis in loculis 



vol. viii. 35 



