AGAVE RIGIDA — AGAVE ANGUSTIFOLIA. 277 



V 



A, foliis lincari-lanceolatis integerrimis rigidis aculeo temiinatis. 



Miller, Diet. 7 ed. no. 8. (1759). 

 A, foliis dentato-spinosis ... 7. Fabricius, Enum. Helmstad. 



2 ed. 13, (1763). 

 Aloe americana ex Vera Cruce foliis angustioribus minus glaucis. 

 Kggelarius, PL Exotic. Hort. Beaum. Cat. (1690). — Commelinus, 

 Hort, Med. Amstelod. Rar. . . Plant, . . Descr. et Icon. 

 2:33-4. j)^A7. (1701).— Miller, Diet. no. 3. (1731,1741,1752). 



Furcraea rigida Haworth, Syn. Plant, SuccuL 74. (1812); 79. 



(1819).— Kunth, Enum. 5 : 843. (1850). 



Fourcroya rigida SchuliGs, Syn. 7' : 731, (1829).— Steudel, No- 



mencl. 2 ed. 37. (1841).— Roemer, Ensatae. 292, 294. (1847). 

 —Salisbury, Gen. PL 78. (1866). 

 Furcroea rigida Don, Sweet's Hort. Brit. 3 ed. 705. (1839). 



The principal other uses of the name Agave rigida are as 

 follows : 



A. RIGIDA De Spin, Le Jardin dc St. Sebastien. 23. pi. 1. (1812), 



A. angustifolia (under which species other users of the name in this 



sense are enumerated). 



A. RIGIDA Engelmann, Trans, Acad. St. Louis, 3 : 316-319. (1875); Bot. 

 Works. 312.— Hayn, Gartenflora. 43 : 512. (1894).— Braun, Der 



Pflanzer. 2:226. (190G). 



A. Ixtli Salm as represented by the wild "chelem" of Yucatan, but 

 with inclusion of A, rigida Miller and A. angustifolia Haworth and ques- 

 tioned addition of A. Karwinskii Zucc, and with the segregated varieties 

 longifolia {A. fourcroydes Lemaire) and sisalana {A. sisalana Perrinc). 

 A, decipiens Baker and A, negleda Small, of Florida, were also undiffer- 

 entiated. 



A. RIGIDA Hemsley, Biol. Centr.-Amer. 3 : 348. (1882-6).— Weber in Bois, 

 Diet. 1 :52. (1896).— Riviere, Journ. Agr. Trop. 1903: 5; Bull. Soc- 

 Accl. Fr. Nov. 1907 : 391-2. — Lofgren, Notas sobre as plantas . . . 

 S. Paulo. 21. (1906). 



A. rigida Engelmann with addition of A, ixtlioides Hooker (?^, 



angustifolia Haw.) and A. elongata Jacobi, and incorporation of the hene- 



quen varieties. 



A. RIGIDA M[orris], Kew Bull. 1887. March. 2, 3; Add. ser. 2 : 131. 



Gartenflora. 1887 : 587. 



A. rigida Miller (except for belief that this is the wild '.'chclem"), 

 with segregated varieties Ixtli {A, Ixtli Salm), elongata {A. fourcroydes 

 Lemaire) and sisalana (A. sisalana Perrine). 



A. RIGIDA Baker, Handbook Amaryll. 181. (1888).— Giirke, Notizbl. K 

 Bot. Cart. Berlin. 1 : 135. (1896).— Rose, Contr. U. S. Natl. Herb. 

 5 : 239; Baile/s Cyclop. 1 : 34. (1900).— Scgura, El Maguey. 4 ed. 94. 



