OF ARTS AND SCIENCES. 67 



though the first volume of Elliott's work bears the date of 1821 upon 

 the title-page, the first fasciculus was issued in the year 1816, and re- 



•t- •«- Cuculli purpurei vel purpurascentes : urabellae multiflorae. 



A. KUBRA, L., wliich is founded on Clayton's no. 263 in Gronov. Fl. Virg., 

 with uppermost leaves accidentally alternate. 



A. PURPURASCENS, L., founded on Dill. Elth. t. 28, and Herm. Parad. Bot. 

 33. A. amana, L., founded on Dill. Elth. t. 27, not of herb. L., which is A. vari- 

 egata. 



A. iNCARNATA, L., With var. PULCHRA, Pcrs., and var. longifolia, the latter 

 a Texan and New Mexican narrow-leaved form. 



* * * Corolla et corona viridulae, flavescentes, albae, nunc sordide vel pallide 

 purpurascentes. 



^ Foiliculi processibus mollibus echinati, crebre tomentosi, turgidi, in pedicellis 

 defle.xis arrecti : plantse tomentosae. 



A. SPECiosA, Torr. A. Donglasii, Hook. 

 A. CoRNUTi, Decaisne. A. Syriaca, L. 



-t- ■*- Foiliculi rostro tantum parce verrucoso-echinulato : herba glabra. 



A. S0LLIVANTII, Engelm. 



-I- -1- -f- Foiliculi laeves, aut glabri aut tomentulosi, 



■w- In pedicellis deflexis vel decurvis arrecti. 



= TJmbella in pedunculo elongato caulem siniplicem terminante solitaria : folia 

 arete sessilia seu amplexicaulia : plantse gluberrimae glaucescentes. 



A. OBTL'siFOLiA, L. A. purpurascens, Walt. Car. 103. 



A. Meadii, Torr. in Gray, Man. ed. 2, addend. ; ed. 5, 397. 



= = Umbellae in caule elato 2-4 ; pedunculis folia lata oblonga aequantibus vel 

 superantibus : herba praeter inflorescentiam glabra. 



A. GLAUCESCENS, HBK. Specimens of this Mexican species were collected 

 in S. \V. Texas, and referred in the Botany of the ]\Iexicun Boundary Survey 

 to A. Sitllicantii. 



^ = = Umbellae pedunculo caulibus abbreviatis foliisque orbicularibus longiore. 



A. nummularia, Torr. Bot. Mex. Bound. 163, t. 45. 



= = = = Umbellae 2-8 vel plures, raro solitariae ; pedunculis (A. cinerea ex- 

 cepta) folia baud superantibus. 



a. Folia lata seu latiuscula, sat magna : cuculli lati antheras vix parumve 

 superantes : caules dodrantales ad 4-pedales. 



1. Herbse glabrae vel primum puberulaj, nunquam floccosffi. 



A. CRTPTOCERAS, Watsou, Bot. King, 283, t. 28. Sat humilis, decumbens, 

 rotundifolia; cucuUis saccato-ovatis apice bi-aouminatis cornu includentibus. 



A. AMPLEXiCACLis, Michx. Decumbens; foliis carnosulis cordatis amplex- 

 antibns ; cucuUis obovato-truncatis, cornu fere incluso. — A. humistrata, Walt., 

 " floribus rubris " exceptis. 



