ae 
THE YUCCEAE. 97 
Two fairly distinct morphological and geographically sep- 
arate forms of this species, which appears to be the ‘* palma 
loca ’’ (scattered palm) of the Mexicans, are found, and 
these may be separated as follows: — 
Leaves long and slender. Flowers rather small. Y. Treculeana. 
Leaves broader. Flowers larger. var, canaliculata. 
Y. Trecu.eana Carriere. 
Synonymy as above. 
The long- and slender-leaved small tree of the Texas 
region, from New Braunfels west to beyond Devil’s river 
and south to about Torreon, Mexico. — Plates 52. 84, f.8. 
Y. Treculeana canaliculata (Hooker) Trelease. 
Y. canaliculata Hooker, Bot. Mag. iii. 16, pl. 5201. (1860).— Baker, 
Gard. Chron. 1870; 1217.—Engelmann, Trans. Acad. St. Louis. 
8:43. — Garden. 1; 152. 8¢ 134.— Watson, Proc. Amer. Acad. 
14 3 252. 
Y. canaliculata pendula Koch, Belg. Hort. 1862 ; 131. 
Y. recurvata Hort, in part. 
Y. revoluta Hort. 
Y. undulata Koch, Belg. Hort. 12: 132. (1862). 
Y. Treculeana undulata Hort. 
The broader-leaved plant of the chapparal of the coast 
region from about Corpus Christi, Tex., to the vicinity of 
Tampico, Mex., and, in the foot hills, to about Monterey, 
Mex. — Plates 53. 54. 
The descriptive garden synonyms of both species and 
variety apparently pertain to young plants. In two trade 
lists, issued respectively in September 1901, and January 
1902, Mr. Carl Sprenger of Naples includes the names 
Y. Treculeana glauca and Y.. Treculeana undulata, 
but without indication of the characters of the plants, — 
so that it is possible here merely to call attention to them. 
The second name probably refers to the form called Y. 
undulata by Koch. 
222. Leaves with conspicuous marginal fibers. 
8. Leaves thin and flexible, the fibers slender. 
7 
