THE YUCCEAE. 79 



persistently denticulate or filiferous, flexible, at least the outer recurved. 

 Panicle loose, exserted on a long scape. Style somewhat shouldered. 

 Fruit unknown. 



A many-formed plant, apparently known only in gar- 

 dens. Plate 47, f. 2. 



The principal forms and the comparable named hybrids 

 may be separated as follows : 



Leaves plane or little concave, bright glossy green, recurved. T. flexilis. 



Taller (1 or 2 m.). Leaves pale green. . f. ensifolia. 



Leaves somewhat falcate. f. tortulata. 



Leaves evidently flliferous in age. f. Hildrethi. 



Leaves glaucous, little recurved. f. patens. 

 Leaves concave, pale green. 



Outer leaves recurved. f. semicylindrica. 



Leaves all strict. f . Peacockii. 



Leaves scarcely pungent. f . Soerhaavii. 



Leaves pale-striate, flliferous. T. X striatula. 



The following garden hybrids, with flexible leaves less 

 than 25 mm. wide, might be sought here : 



Leaves flat, entire. 



? J. X Massiliensis. 



? r. X ensifera. 



Leaves flat, often denticulate. T. X laevigata. 



Leaves very concave. T. y^juncea. 



Y. FLEXILIS Carriere. 

 Synonymy as above. 



Dwarf. Leaves long and narrow, loosely recurved, bright glossy 

 green. 



Known only in gardens, where, according to M. Carriere, 

 it is sometimes erroneously called Y. acuminata, Y. sten- 

 ophylla, Y. longi folia, and Y. angusti folia. It is also in 

 part the Y. gloriosa of gardens. 



Y. flexilis Peacockii (Baker) Trelease. 



F. Peacockii Baker, Journ. Linn. Soc. Bot. 18 : 223. (1880). Kew 

 Bull. 1892: 8. Wiener 111. Gart.-Zeit. 6 : 320. Garden. 19:226. 



Scarcely appears to differ except in the numerous leaves being stricter. 



