THE YUCCEAE. 73 



usually brown margin at first with a very few distant rarely persistent 

 minute teeth, when developed entire or occasionally with a few detach- 

 ing slender fibers. Inflorescence mostly narrowly paniculate, the base 

 often not exserted, glabrous or exceptionally puberulent. Flowers 

 creamy white, often tinged with red or violet : ovary often with a slight 

 suggestion of basal stipe; style oblong, white, frequently 3-divided. 

 Fruit obovoid-oblong, mostly pendent, with six prominent ridges, the 

 thin exocarp soon drying about the core : seeds glossy, 5 to 6 X 6 to 7 

 mm., slightly grooved as if the albumen were ruminated. Plates 43-46. 

 80, f. 4. 



Coast and " sea islands," from South Carolina to north- 

 eastern Florida, on the sand dunes. Generally planted and 

 in places escaping, in the eastern Gulf region. Plate 94, 



f-1- 



The typical form and what is called here variety plicata 

 are the only spontaneous forms of this species of which I 

 have knowledge. It has been in cultivation since 1596 

 (Gerarde, Herball, 1359. /.), and to-day is represented by 

 a considerable number of garden forms, several of them 

 hardy further North than any other species except Y. flac- 

 cida, Y. filamentosa, and Y. glauca. Some of these 

 approach the following two species while others, scarcely 

 presenting mature characters, are but tentatively placed 

 anywhere; and a number of imperfectly described gar- 

 den hybrids add to the difficulty of properly understand- 

 ing Y. gloriosa. The following key, including these hy- 

 brids, may serve for the naming of the forms : 



Leaves not or little plicate, usually concave only toward the end. 

 Leaves rigidly spreading. 



From slightly glaucous becoming green, A to .8 m. long, 40 to 

 50 mm. wide. Y. gloriosa. 



Dwarf and smaller-leaved. f . minor. 



More persistently glaucous. 



Somewhat falcate. f. obliqua. 



With whitish median variegation. f. medio-striata. 



Outer leaves somewhat recurving. 



Leaves but transiently glaucous. var. robusta. 



Persistently glaucous. f. nobilis. 



Leaves narrower. f . longifolia. 



