Yucca. LILIACEyE. i(jy 



* Fruit injiated, the cells not burst by the maturing seed. 



1. N. Bigelovii, Watson, 1. c. Loaves Hat, nearly an inch wido above tlie broad 

 deltoid base, not carinate, 3 or 4 feet long, the margin roughish : "scape 3 feet 

 high " : bi-auchlets of the compound panicle slender, an inch or two long : perianth- 

 segments a line long : fruiting pedicels very slender, 2 to 4 lines long, jointed near 

 the middle : fruit yary thin, 4 or 5 lines in diameter, deeply emarginate at both 

 ends: seeds ovate-oblong, 2 lines long, whitish, sliglitly reticidaled. — JJasi/lirioit 

 JJiijelovii, Torr. Pacif. U. Ivep. iv. lOl. Jieaitcaniea Jilijclovii, i>id<er, 1. c. 32G. 



On iiioiiiitaiii-siilos above Williams lUvor in W. Arizuim, niul likely to oeeiir in the mountains 

 of San IJeniardino County bordering the Colorado Desert. Tlie ehanicters of the caudex and 

 llowering stem are unknown. 



2. N. Parryi, Watson, 1. c. Caudex 3 to G feet high : leaves resembling those 

 of the last species, but thicker and somewhat concave above, especially toward the 

 stout apex, very strongly serrulate on the margin : branchhits of the panicle and the 

 pedicels stouter: perianth-segments H lines long: fruit G lines in diameter, rather 

 more thickly membranous : seeds subglobose, the very thin transparent testa linely 

 antl irregularly wrinkled. 



On the western border of San Bernardino Desert, Dr. C. C. Parri/, 1876. 



* * Fruit smaller and soon bursting, leaving the globose seeds exposed. 



3. N. Palmeri, Watson, 1. c. Loaves as in the [)receding, flat, very strongly 

 serrulate : tlowering stem smooth and glabrous : panicle very narrow, 3 feet long, 

 tlie partial panicles pyramidal, only 3 inches long or loss, and the branchlets an inch 

 long; primary bracts large and dilated: pedicels 2 lines long: ilowers very small, 

 the segments less than a line long : stigmas upon a short style : fruit 2 lines broad 

 before rupture : seeds globose, witii very thin transparent smoothisli testa. 



Near tlie southern border, in the Tantillas ^Mountains, Lower California, Dr. E. Palmer, 1875. 



17. YUCCA, Linn. Spanish Bayonet. 



Perianth large and campanulate, or spreading, of 6 white or whitish somewhat 

 persistent ovato-Ianceolato many- nerved segments woolly at the apex. Stamens in- 

 cluded, adnato to the base of the segments ; filaments clavate, often paiullosc ; 

 anthers short, oblong, sagittate or didymous, versatile, introrse. Ovary sessile, 

 oblong or subglobose; stigmas 3, emarginate and more or less connate, sessile or on 

 a stout tubular persistent style. Fruit more or less fleshy and baccate, or a dry and 

 septicidal or loculicidal capsule, the cells incompletely divided by a partition in- 

 truded from the back. Seeds numerous, in 2 rows in each cell, flat, horizontal, with 

 thin black testa. Embryo diagonal, straight or curved. — Caudex woody, soft and 

 fibrous, simple or branched, very short or becoming tall and palin-like, bearing the 

 sessile or pedunculate inflorescence or often a tall bracteate flowering stem ; leaves 

 numerous, crowded, thick and rigid, persistent, linear or narrowly lanceolate, usually 

 spine-tipped, with smooth or serrulate or filameiitoso margins ; flowers in an ample 

 compound panicle, usually solitary and nodding, opening at ovoning; pedicels 

 jointed near the summit. — Engolmann, Trans. St. Louis Acad. iii. 17. 



An American genus of a dozen or more species, most abundant in tlie southern United St.atea 

 and northern Mexico, one species ranging iiortliward to Dakota and two or more belonging to 

 Guatemala. 



* Perianth cavrponulate : f laments nhtuRe, papillosr, at length spreading or 

 recurved; atifhers cordate-sagittate : stigmas papillose, more or less distinct: 

 fruit mostly Jleshy and indehiscent. — Euyucca, Engelm. 



