868 AN ACCOUNT OF THE GENUS ARGEMONE. 



759 (1873). A. plati/ceras Coult. Bot. Rochj Mts. 13 (1885) ; 

 Contrib. U. S. Nat. Herb. ii. 12, quoad syn. A. hispida (1891), vix Link 

 & Otto. A. mexicana /3. ulUfiora var. his^nda 0. Kuutze, Rev. i. 13 

 (1891). 



America: United States; California orientalis (in ditione natu- 

 rali, "Great Basin" nuncupat.), Williamson's Pass, Heeniiann in 

 Herb. Durand ! Mono Pass, Lfmmon ! Nevada, Herb. C'usson I 

 Utah, Jonex, n. 1605! Wyoming, apnd .Cheyenne, McLean I 

 Colorado, prope Arkansas City, Cnsack ! Bell ! Hooker d Gray ! ; 

 •'In the plains," Frtse;/, n. 205 ! Nova Mexico, Fendler, n. IG (spp. 

 florifera) ! Kern in Herb. Durand ! Bell, n. 148 ! Eothrock, n. 75 ! 



y. Y&v. chilemis : alabastris oblongis, sepalorum cornubus au- 

 guste triangularibus sparsius aculeatis; petalis apice rotundatis ; 

 planta glabra vel rarissime hispida. Aniemoyie rosea Hook. Bot. 

 Misc. ii. 207 (1830); Walp. Hep. i. lio' (1812); C. Gay, Fl.or. 

 Chilen. i. 100 (1845). A. Hunneuiannii Otto & Dietr. Alhieui. Gar- 

 tenzeit. 298 (1833) ; Walp. Rep. \. 110 (1842) ; C. Gay, Flor. Chilen. 

 i. 101 (1845) ; Prantl & Kundig in Engl. Nat. Pjianzenf. iii. pt. 2, 

 141 (1889). A. mexicana C. Gay, Flor. Chilen. i. 110; var. /3. tan- 

 tum exclus. (1845), haudquaquam Linn. 



America: Chili; Arqneros, prope Coquimbo (sp. bispidum typ. 

 A. rosea), Cruickshanks in Herb. Hookerianum I Coquimbo, Lord 

 Colchester \ Bridges \ Valparaiso, Cuming, n. 7641 Gaudichaud, 

 n. 222 in parte (c. A. ochroleuca commixt., sub nom. A. grandiflora 

 distrib.) ! Bertero, n. 60! Fdmonstonel Ph. Germain\ Moseley I 

 Lampa ("Cardo bianco" incoL), Herb. Reedl Quilotta, Fh. Ger- 

 main ! Bertero ! St. Jago, C. Gay, n. 206 in parte (c. A. ochroleuca 

 commixt., sub nom. A. mexicana distrib.) ! 



Herbacea, robusta, 45-120 cm, alta ; foliis 8-25 cm. longis, 

 2'5-12 cm. latis ; bracteis sub floras 2-5-4 cm. longis, 1-5-2-5 cm. 

 latis ; sepalis in var. ti/pica et var. hispida 2-5 cm., in var. chilensis 

 3-5 cm. longis ; cornubus 6-10 mm. longis, 4-6 mm. latis ; ala- 

 bastris 2-2-5 cm. latis; capsula 3-6 cm. longa, 1-5-2 cm. lata; 

 valvis crassis spinis horridis dense obsita (in forma distinctiore var. 

 tijpiciB in Texas et Nova Mexico crescente spinse mediaune magno- 

 pere augmentatse et ramosae sunt), seminibus 2-5 mm. latis. 



The three forms here grouped under A. platgreras are perfectly 

 easily distinguished, and it would be equally satisfactory, so far as 

 the material hitherto sent to Europe is concerned, to treat them as 

 so many distinct species. 



The true A. platyceras occurs in four more or less distinguishable 

 states : — 



a. That with broad sepal-horns, obtusely pointed and herbaceous 

 throughout. This seems confined to Southern Mexico, and has been 

 communicated to Europe by Andrieux, Berlandier, Schaffner, Me- 

 hedin, and Bourgeau. The ripe fruits of this form are not quite so 

 densely aculeate as in the other North American forms. This is 

 the true A. platyceras of Link & Otto, and is the A. inexica7ia var. 

 aculeaiissima of Moricand. 



ft. That with triangular sepal-horns coriaceous towards the 

 sharp point, which ends in a strong spine. This form occurs 



