THE YUCCEAE. 47 



Gartner-Zeit. 11: 361. /. Mohr, Contr. U. S. Natl. 

 Herb. 6: 441, as to southern localities. 



Tuca foliis fllamentosis. Morison, Plant. Hist. 2: 419. Sect. 4. pi. 



23. (1680). 

 Juca Americana fllamentosa. Hunting, Waare Oeftening der Planten. 



471. /. (1682). Naauwkeurige Beschryv. der Aardgew. 663. (1696). 

 Yucca Virginiana, foliis per ambitum apprime fllatis. Plukenet, 



Almag. Bot. 396. (1696). Raius, Hist. Plant. 8: 573. (1704). 

 Yucca foliis lanceolatis etc. Trew. PI. Sel. 9. pi. 37. (1754). 

 Yucca foliis lanceolatis acuminatis integerrimis margine fllamentosis. 



Gronovius, Fl. Virgin. 152. (1739). 53. (1762). 



Acaulescent, cespitosely suckering. Leaves rather firm, generally 

 stiffly erect or spreading, about half a meter long, usually something 

 over 25 mm. wide, narrowed above the base, attenuate or typically 

 abruptly acute, occasionally somewhat pungent, green or a little glaucous, 

 the back frequently roughened in lines; marginal threads rather thick 

 and curly for the group. Inflorescence 1.5 to 3 or 4 m. high, long- 

 pedunculate, glabrous or very exceptionally puberulent. Flowers white, 

 usually tinged with cream color or green or rarely browned, expanding 

 50 to 75 mm. ; style white, elongated, at most slightly swollen, 3-grooved. 

 Capsule apple-green and with regularly convex carpels when maturing, 

 50 or 60 mm. long and brown when ripe: seeds glossy, 4 to 5X 7 mm. 

 Plates 8-12. 79. 87. 



In a generalized sense, a species usually of the coastal 

 plain of the southeastern Atlantic region, from Tampa, 

 Fla., to above Charleston, S. C., and extending back to 

 northwestern Georgia, west-central North Carolina, 

 southwestern Alabama, and the gulf coast of Missis- 

 sippi. Plate 87, f. 1. 



The principal forms appear separable as follows : 



Leaves of medium size, little recurved. Y. filamentosa. 



Variegated with white or yellow. f. variegata. 

 Outer leaves attenuate, recurved, the inner very broadly 



lanceolate, erect. var. media. 



Leaves narrow, very spreading. var. patens. 



Leaves very long, attenuate, recurving. var. bracteata. 



Leaves very broadly spatulate, not recurved. var. concava. 



Y. FILAMENTOSA Linnaeus. 



Synonymy as above. 



