THE YUCCEAE. 93 



Y. aloifolia tenuifolia (Haworth) Trelease. 



Y. tenuifolia Haworth, Suppl. 34. (1819). Regel, Gartenflora. 8 : 35. 

 Leraaire, 111. Hort. 13 : 93. Baker, Journ. Linn. Soc. Bot. 18 : 

 221. Engelmann, Trans. Acad. St. Louis. 3 : 37. 



Habit of the preceding, the leaves frequently faleate, often purplish, 

 with somewhat roughened dorsal ridges and very sharp but fine marginal 

 toothing. 



A cultivated form, doubtless of the coast region, and 

 found by the writer in April 1901 escaped along the 

 shady roadside near the Grant-Pemberton monument at 

 Vicksburg, Miss. in which city, however, the usual cul- 

 tivated plant is typical aloifolia. 



Y. aloifolia Menandi Trelease. 



A sport, seemingly of f . tricolor, with the rigidly much recurved leaves 

 about .3 m. long, 5 to 10 mm. wide, somewhat rough on both margin and 

 dorsal ridges, of a deep green, with yellow and occasionally red median 

 band or lines narrow on the upper surface but, as in forma tricolor, 

 occupying a large part of the lower surface. Plate 50. 



Purchased from Mr. W. A. Manda (from the Louis 

 Menand collection) in July 1901, under the name Y. quad- 

 ricolor. 



Y. aloifolia Yucatan a (Engelmann) Trelease. 



Y. Yucatana Engelmann, Trans. Acad. St. Louis. 3 $ 37. (1873). Baker, 

 Journ. Linn. Soc. Bot. 18 : 221. Trelease, Kept. Mo. Bot. Gard. 

 3:162. .pZ. 45. 



Trunks clustered from the base, as much as 7 m. high. Leaves rather 

 flexible. Inflorescence tomentose. Stamens shorter than in the type. 



Yucatan, collected by Schott (706) in 1865 at the ruins 

 of " Nohpat " or " Najput." 



From all of the other baccate Yuccas, Y. aloifolia, in 

 the 'comprehensive sense, differs obviously in its evidently 

 stalked ovary and coreless purple-fleshed fruit. Its geo- 

 graphical distribution is such as to lead to the conclusion 

 that it may have originated in the eastern islands of the 

 West Indian group, from which it may have spread, by aid 

 of ocean currents, to the Atlantic states and Bermudas, 

 and, by way of Jamaica, to the Mexican coast, isolation 



