THE YUCCEAE. 49 
Simulating in aspect or bract characters cultivated forms of 
Y. flaccida. — Plate 86, f. 1. 
Y. FILAMENTOSA concAva (Haworth) Baker, Journ. Linn. 
Soc. Bot. 18 : 228. (1880). 
Y. concava Haworth, Suppl. Pl. Succ. 34. (1819). — Lemaire, Ill. Hort. 
13; 98. 
Y. filamentosa latifolia Engelmann, Trans. Acad. St. Louis. $ : 52. (1873). 
General characters of the type, into which it appears to pass, but the 
usually very plicate abruptly acute or obtuse leaves deeply concave and 
spatulately enlarged to a width of as much as 100 mm. — Plates 10. 79, 
IAs 
About Charleston, S. C., to below Savannah, Ga., at 
Salisbury, Md., and doubtless in much of the intervening 
coast region. — Plate 86, f. 2. 
Y. FILAMENTOSA MEDIA Carriére, Rev. Hort. 1860:213. 
f. 47-8. 
Y. filamentosa laevigata Engelmann, Trans. Acad. St. Louis. $352, 54, 
214. (1873). — Watson, Proc. Amer. Acad. 14 3254. — Baker, Journ. 
Linn. Soc. Bot. 18 3 228. 
Y. filamentosa Journ. of Hort. 623271. f. 
? Y. flaccida Lindley, Bot. Reg. 22. pl. 1895. — Baker, Ref. Bot. 5. 
text to pl. 323. 
? Y. puberula Baker, Ref. Bot. 5. pl. 322, — not text. 
? Y. glauca Baker, Ref. Bot. 5. pl. 315. 
Leaves rather thinner, the outer gradually more attenuate and re- 
curved, the inner broadly lanceolate; the marginal threads straighter. 
Inflorescence mostly puberulent and sometimes tomentose. — Plate 11. 
A garden form, passing towards Y. flaccida glaucescens 
and Y. Louisianensis. 
Y. Fuaccipa Haworth, Suppl. Pl. Succ. 34. (1819).— 
Lemaire, Ill. Hort. 18:99.— Baker, Gard. Chron. 
1870: 923. Ref. Bot. 5. pl. 323. 
Y. puberula Haworth, Phil. Mag. 1828 ; 126. — Sweet, Brit. Fl. Gard. 
pl. 21.— Lemaire, Ill. Hort. 18:99. — Baker, Gard. Chron. 1870: 
923. 
Y. filamentosa flaccida Engelmann, Trans. Acad. St. Louis. 3 3 52, 214. 
