SCATTERED DESCRIPTIONS OF YUCCA. 299 
The following synopsis exhibits at a glance the arrangement of the species and their geo- 
graphical diatéilsatiott 0 
YUCCA, Liny. 
SARCOYUCCA. 
Y. aloifolia, Linn., southeast and south. 
Y. Yucatana, Eng. south, 
Y. Guatemalensis, Baker, south. 
Y. Treculiana, Carr., southwest. 
Y. baccata, Torr., southivest. 
Y. Schottii, Eng., southwest, 
Peer Pe 
CuisToyvcca, 
7. Y. brevifolia, Eng., southwest. 
8. Y. gloriosa, Linn., southeast. — 
CHENOYUCCA, 
9. Y. rupicola, Scheele, southwest. 
10. Y. angustifolia, Pursh, west and southwest. 
Mas He ‘fiataiutiie Linn., sou theast. 
HESPEROYUCCA. 
12. Y. Whippiei, Torr., southwest. 
IV. SCATTERED DESCRIPTIONS OF YUCCA. 
From BoranicaL GAZETTE, 1881, VI. 224. 
Yucca MAcRocARPA. n. sp. Trunk several (1-4) feet high ; leaves spreading, sharp-pointed, concave with entire 
margins ; panicle subsessile with lanceolate white fleshy bracts ; flowers not seen ; fruits cylindrical not marked by 
any rhlgen, obtuse, pale yellowish, pulpy ee inches long, 6-7 in circumference) ; seeds thick and large (5-6 lines 
wide, 1-1} lines thick), rugose-ruminated. 
In ravines of the Santa Rita Mountains south of Tucson, Arizona. — Evidently closely allied to Y. baccata, Torr., 
which is found from Southern Colorado all along through Arizona to Southern California ; distinguished from it by 
the absence of fibres on the ee (I have rarely seen on one or the other thin fibre detached from the edge, just 
as we find it sometimes in Yucca gloriosa, and Y. canaliculata, which ordinarily have entire edges), by the smaller, 
narrow bracts, and the obtuse, - rostrate fait The fruit is of the color of a yellow apple, rather pulpy, of a 
pleasant sweetish acidulous taste. 
From BoranicaL GAZETTE, 1882, VII. 17. 
Yucca evata. Trunk 3 to 5 feet or more high, leaves linear rigid sharp-pointed, filamentose on the white mar- 
gins; with white oval acute or acuminate bracts as long as the pedicels ; flowers white ; segments ovate acute ; ovary 
attenuated into a whitish style; capsule cylindrical-ovate obtuse ee Fe seeds large, 4 inch wide, narrowly 
wing-margined. — Y, angustifolia, var. elata, Engelm., Notes on Yucca, p.50. Y. constricta, Baker, Yuccoider, p. 229; 
not Buckley. 
Deserts of Arizona, probably extending into Southern New Mexico and Mexico. Altogether one of the most 
stately Yuccas, distinguished from the closely allied Y. angustifolia, with which I had formerly united it, by its distinct 
trunk, which is usually 3 to 5 feet, but which I have seen even 10 or 11 feet high, and 3 to 7 inches thick, an 
cially by its long flowering scape, 3 to 7 feet, naked below, and bearing a much branched panicle often 5 feet long ; 
flowers spreading, 3} to 4 inches wide, while those of the allied species are more globose, mostly of a greenish color, 
with broadly oval concave segments, with a green stigma ; capsule similar to that of angustifolia, seeds of same size as 
in that species but with a narrower margin. Young specimens flower before they make a trunk, and they look much 
like Y. angustifolia, but can always be distinguished by the naked scape and by the characters of the flower. 
Yucca constricta, Buckley, appears to be a form of Y. angustifolia with a short trunk ; the constricted capsules 
ascribed to it are not normal, but occasionally occur in all species of Yucca. 
