THE YUCCEAE. 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, or filiferous leaves, and mostly 
ample panicle. 
The true Yuccas, which (including Clistoyucca), in con- 
trast with his section Hesperoyucca, Dr. Engelmann* treated 
under the sectional name Huyucca, 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- 
* Bot. King. 496. (1871). Trans. Acad. St. Louis. 33 34. 
+ Y¥. Pringlei Greenman, distributed from Mt. Ajusco, Mexico, in 1897 
(Pringle, No. 6669), was subsequently shown by Mr. Greenman to be 
Furcraea Bedinghausii. — Proc. Amer. Acad. 88 ; 474. (1898). 
