THE YUCCEAE. 103 



the inflorescence is typically glabrous ; and fruit-bases and 

 seeds show that the fruit is baccate. 



If, as now seems more probable than ever, the Torrey 

 sheet of Y. brevifolia contains parts of two species, Schott's 

 name may best apply to what Dr. Engelmann considered 

 the most characteristic part, the leaves, particularly as the 

 name Schottii has now become current for the remainder. 

 The later Y. brevifolia, Engelmann (1871), as has been 

 stated above, is now proposed as the type of the genus Clis- 

 toyucca under its first published (varietal) name arborescens. 



44. Leaves relatively broader, usually smooth. 



Y. AUSTRALIS (Engelmann) Trelease, Kept. Mo. Bot. 

 Gard. 3: 162. pi. ?, 4. (1892). 



Y. baccata australis Engelmann, Trans. Acad. St. Louis. 3 : 44, 46. 

 (1873), in part. Watson, Proc. Amer. Acad. 14:252. Baker, 

 Journ. Linn. Soc. Bot. 18 : 229. 



T. ftlifera Chabaud, Rev. Hort. 48:432. /. 97, (1876). Carriere, 

 Rev. Hort. 56 : 53. /. 12, 13. Garden. 10: 554. /. Gard. & For- 

 est. 1 : 78. /. 13,14. Baker, Kew Bull. 1892 : 8. Gard. Chron. 

 iii. 3 : 743, 751. /. 97, 100. Amer. Florist. 8 : 59. /. Urbina, Cat. 

 PI. Mex. 353. 



T. canaliculata filifera Fenzi, Bull. R. Soc. Tosc. di Orticult. 14 : 278. 

 pi. 9. (1889). 



2 T. periculosa Baker, Gard. Chron. 1870 : 1088. 



? T. baccata periculosa Baker, Journ. Linn. Soc. Bot. 18 : 229. 



? T. polyphylla Baker, Gard. Chron. 1. c. 



? T. circinata Baker, Gard. Chron. 1. c. 



? T. baccata circinata Baker, Journ. Linn. Soc. Bot. 18 : 230. 



? T. scabrifolia Baker, Gard. Chron. 1. c. 



? Y. baccata scabrifolia Baker, Journ. Linn. Soc. Bot. 18:230. 



? Y. fragiltfolia Baker, Gard. Chron. 1. c. 



? Y. baccata fragilifolia Baker, Journ. Linn. Soc. Bot. 18:230. 



? Y. baccata Hystrix Baker, Journ. Linn. Soc. Bot. 18 : 230. (1880). 



Y. Treculeana Rose, Contr. U. S. Natl. Herb. 5. pi. 38. 



Dasylirion aloefolium Carriere, Rev. Hort. 1884 : 53. 



A large thick- and rough-stemmed tree, at length much branched. 

 Leaves rigidly spreading, pungently stout pointed, green, usually about 

 .3 m. long and 25 mm. wide but occasionally of double these dimensions, 

 thick, piano- or concavo-convex, smooth or exceptionally a little scabrid 

 on the dorsal angles, somewhat sparingly rather coarsely flliferous. In- 

 florescence on an exserted peduncle, oblong, pendent, with pendent 



