92 MISSOURI BOTANICAL GARDEN. 



Yucca foliorum margine crenulato. ft. Linnaeus, Hort. Cliff. 130. 

 (1737). Hort. Ups. 88. (1748). 



Trunk branching above, rather tall, leaves broad and long, more flex- 

 ible and somewhat arched, less pungent. 



As far as it is known to me Y. Draconis, taking the figure 

 of Dillenius as representative of it, is properly placed under 

 Y. aloifolia, with the differential characters given. It 

 appears to have been cultivated in Europe since 1605, but 

 it is not impossible that much of the earlier Draconis, like 

 that of gardens to-day, was the Central American Y. ele- 

 phantipes, the fruit and flower characters of which are 

 quite different from those of Y. aloi folia, though the 

 foliage is of the same general type. 



Y. ALOIFOLIA CONSPICUA (Haworth) Engelmann. Trans. 

 Acad. St. Louis. 3:35. (1873). Baker, Journ. 

 Linn. Soc. Bot. 18:221. 

 r. conspicua Haworth, Suppl. 32. (1819). Lemaire, 111. Hort. 13 r 



92. Houllet, Kev. Hort. 60 : 388. 



1*. aloifolia flexifolia Bommer, Journ. d'Hort. Prat. 3 : 19. (1859). 

 y. Mezicana Hort., in part. 



Trunks clustered. Leaves broad and lax, recurving, softly green 

 pointed. 



A form of the preceding, frequent in European gardens 

 and said by Baker to be represented by wild [escaped?] 

 plants from the vicinity of Cuernavaca, on the Pacific 

 slope of Mexico (Bourgeau, no. 1408). 



Y. aloifolia areuata (Haworth) Trelease. 



r. areuata Haworth, Suppl. 33. (1819). Regel, Gartenflora. 8 : 35. 

 Lemaire, 111. Hort. 13 : 93. Baker, Gard. Chron. 1870: 828. Journ. 

 Linn. Soc. Bot. 18:221. Engelmann, Trans. Acad. St. Louis. 



3:37. 



Short-stemmed from a prostrate caudex. Leaves less than 25 mm. 

 wide, .3 to .5 m. long, smooth, the margins less denticulate than usual. 



A garden form , doubtless derived from the Carolina coast 

 region, and seemingly of shaded places. 



