- 339 — 



were known to Salm in 1834. A writer in the Journal of Horticulture 

 (III. 19: 229.— 188Q) states that the green form of amerkana was 

 introduced into England about 1640 (the year in which Parkinson's 

 Theatrum was published), the variegated form preceding it by 

 40 years; but he does not make clear the reason for this belief. 

 The foregoing references can hardly be placed under either 

 of the following color extremes. 



A. americana marginata alba (1690). 



Aloe, Americana foliis ex albo & viridi eleganter variegatis. Kiggelaer, 

 Hort. Beaum. (1690). Miller, Dict. (1731, 1741, 1748). 



Agare americana »iiiricafii iol. marg. albo. Risler, Hort. Carlsr. 3. (1747). 



Fide Schultes, Syst. 7^: 722. (1829). 



J. americana [Silver-stripedJ. Mawe, Dict. (1778). 



A. americana [white margined|. Bosse, Handbuch. 1: 204. (1840). 



A. americana man/inafa. Regel, Gartenflora, 7: 311. (1858). 



? A. americana elcffanfiasima. Wochenschr. Ver. Beförd. Gartenbau. 

 1S62: 301. 



? .1. alJio-manjinala. Terracciano, Primo Contr. 41. (1885). 



? A. americana argenteo-marginata. Voss u. Siebert, Vilmorins Blumen- 

 gärtn. 1037. (1896). 



'f A. americana aU)nmarginata.K.^\v. Hand List Tend. Monocot. 107. (1897). 

 -- Bull. N. Y. Bot. Gard. 1: 378. (1900). 



A. clcgantissima. Hort. 



A. mexicana fol. var. Hort. 



A. mexicana rariegata. Hort. 



Variegation marginal, white with at most a slight creaniy tint; sometimes 

 a little shaded with rose in young leaves. 



A. americana niargiiiata aiirea (1747). 



.•1. americana miiricata fol. marg. luteo. Risler, Hort. Carlsr. 3. (1747). 



Fiele Schultes, Syst. 7^: 722. (1829). 



A. americana fgold striped]. Mawe, Dict. (1778). 



.1. a»/-e;(f. Jolyclerc, Syst. 1: 268. (1799). 



A. americana anrea. [Merrem', L., Vollst. Pflanzensyst. 1: 159. (1811). 



A. americana fol. marg. late eleganterque luteis. Haworth, Synops 

 Succ. 70. (1812). 



A. americana fol. marg. luteo. Maycock, Fl. Barbad. 133. (1830). 



A. americana fol. viridibus luteo-marg. Salm, Hort. Dyck. 7. (1834). — 

 Kunth, Enum. 5: 821. (1850). — Martius, Fl. Bras. 3': 184. (1855). -- J acob i, 

 Verzeichnis. 11. (1855); Versuch. Nachtr. 24. (1867). 



A. americana fol. variegatis. Hooker, Curtis's Bot. Mag. il. l'J. pl. )'<'<"'-/ 

 (1838). Allgem. Gartenzeit. (5: 198. (1838). - Lowe, PI. Feuili. color. 2. 

 pl. 24. (1870). — Sprenger, Monatsschr. f. Kakteenk. 5: 69. (1895). 



22* 



