278 MISSOURI BOTANICAL GARDEN, 



Q901). — Ascherson & Graobncr, Synops. Mittelciirop. Fl. 3 : 416, 

 ^jQQQ)^ — Boyd, Fibre Industry in Queensland. 6. (190G). 



A. rigida Engelmann, \\\i\\ further inclusion of A. ixtlioidcs Hooker 

 (?A. angustijolia Haw.), and with the segregated varieties elongala {A. 

 rigida longlJoUa Engehnann + A. elongala Jacobi + A. Candelabrum 



ana (A. rigida sisalana Engehnann). — Thus etssentially 



9%sa 



A, rigida Hemsley with these varieties segregated. 



A. RIGIDA Saunders, Cat. Econom. FI. U. S. Dcp. Agr. 5. (1891).— Nash, 

 Journ. N. Y. Bot. Card. 8 : 171. (1907). 

 A. sisalana Perrine. 



A. RIGIDA Donn.-Smith, Enum. Plant. Guatemal. 2 : 75. (1891). . 



One of the Tequilanae, as yet undescribed, cultivated in hedgerows 

 on the Pacific slope of Guatemala. 



A. RIGIDA Coulter, Contr. U. S. Nat. Herb. 2 : 430. (1892).— Trabut, 

 Rev. Hort. Alg6r. 6 : 127, 132. (1901).— De Joinville, Atlas. 73. 



/. (1902). 



Apparently A. fourcroijdcs Lemaire. The Coulter reference seems to 



rest on henequen plants escaping from trial plantations along the lower 



Rio Grande. 



Agave rigida Kew BuU. 1892:21, 273; Add. ser. 2 : 151.— Boeken, 



Tropenpflanzcr. 4 : 6. (1900). 



Essentially the henequen and sisal varieties, segregated by Engehnann. 



A. RIGIDA Baker, Kew Bull. 1892: 4, 35-6; Add. ser. 2: 220. 



A, rigida Baker, Handbook, with further inclusion of A, Cantata. 



A. RIGIDA Kew Hand List Tend. Monocot. 119. (1897),— Conter, Bull. 

 Hawaii Exper. Sta. 4: 8. (1903). 

 Apparently .4. Ixtli Salm. 



A. RIGIDA Lebl, Gart^Mag. 50 : IG. (1897). 



A synonym of Bonapartea rigida, which name pertains to a form of 



A. fitrlata. 



A. RIGIDA Bcrger, Gartenwelt. 2 : 578, 004. /. (1898). 



A rough-leaved undescribed species of the Tequilanae. 



A. RIGIDA Nicholson, Diet. Suppl. 1 : 28. 



A. Ixtli as to foliage. A. ixtlioidcs Hooker (? A. angustijolia Haw.) 



as to flowers. 



A. niGiDA Northrop, Mem. Torr. Bot. CI. 12:28, 78, 94. (1902). 

 Cokcr, Vcg. Bahama Isl. 251. jtl. 40. (1905). 



The, as yet unnamed, " bamboo " of the Bahamas. 



A. RIGIDA var. Hart, Rept. Trhiidad Gard. 1890. 



A. ang^islijolia Ilaworth. 

 A. moiDA form. Baker, Kew Bull. 1892 : 4; Add. ser. 2 : 221. (1901). 



A reference of A. Cantala and A. Rmnphii of the Riviera gardens, 

 perhaps A. Candelabrum Todaro. 



