THE YTJCCEAE. 43 



thickened and outcurved above ; anthers short, sagittate, 

 soon horizontal. Ovary oblong, mostly longer than the stout 

 oblong or swollen style ; stigma unequally 6-lobed, openly 

 perforate. Fruit nearly or quite 6-celled: erect, capsular, 

 6-valved above, and with thin seeds with the albumen not 

 ruminated ( Chaenoyucca) ; variously pendent or erect, 

 soon drying about a papery core, indehiscent, with thin 

 seeds without rumination ( Heteroyucca} ; or pendent, bac- 

 cate mostly about a papery core, indehiscent, with very thick 

 seeds having the albumen ruminated ( Sarcoyucca ) . 

 Acaulescent or arboreous plants occasionally of large size, 

 with flaccid and pointless or usually rigid and very pungent 

 entire, minutely denticulate, orfiliferous leaves, and mostly 

 ample panicle. 



The true Yuccas, which (including Clistoyucca ) , in con- 

 trast with his section ffesperoyucca, Dr. Engelmann* treated 

 under the sectional name Euyucca, have for many years 

 been in cultivation in considerable numbers, and hence 

 under the eyes of both gardeners and botanists, but no ad- 

 ditions have been made to the number of known spontane- 

 ous species within recent years f except by the separation 

 or rehabilitation of what had passed for varieties, forms or 

 synonyms of described species, though some twenty years 

 ago a number of hybrids, referred to below under Y. 

 gloriosa, were introduced into cultivation, and it is certain 

 that within the next few years our gardens will be still 

 further enriched by many artificial hybrids between the 

 known species. 



This genus is not only larger than any of the others of 

 the group Yucceae, but has a much greater geographical dis- 

 tribution, extending southwards from the great bend of the 

 Missouri river to the table land north of the City of Mex- 



* Hot. King. 496. (1871). Trans. Acad. St. Louis. 3 : 34. 



t T. Pringlei Greenman, distributed from Mt. Ajusco, Mexico, in 1897 

 (Pringle, No. 6669), was subsequently shown by Mr. Greeuman to be 

 Furcraea Bedinghausii.Proc. Amer. Acad. 83 : 474. (1898). 



