Tab. 7172. 

 yucca rupic0la. 



Native of Southern United States and Mexico. 



Nat. Ord. Liliace^e. Tribe Dracene^e. 

 Genus Yucca, Linn. (Benth. & Hook.f. Gen. Plant, vol. iii. p. 778). 



Yucca ritpicola; subacaulis, foliis pluribus dense rosulatis ensiformibus 

 rigidis viridibus 1^-2-pedalibus apice pungentibus marginibas corneis 

 minute serrulatis, pedunculo foliis longiori, floribus in paniculam amplam 

 laxam oblongam dispositis ramis ascendentibus, pedicellis brevibus apice 

 articulatis, bracteis ovatis scariosis, periantbio magno campanulatoalbido 

 segmentis acutis ovatis vel oblongis, staminibus ovario sequilongis fila- 

 mentis muricatis, stylo ovario cylindrico-trigono breviori stigmatibus 

 parvis, fructu capsulari oblongo rostrato, seminibus teauibus. 



Y. rupicola, Scheeh in Linnaa, vol. xxiii. (1850) p. 143 ; Engelm. Monogr 

 p. 48 ; 8. Wats, in Proc. Amer. Acad. vol. xiv. p. 253 ; Baker in Gard 

 Chron. 1870, p. 828 ; Joum. Linn. Soc. vol. xviii. p. 222. 



Y. lutescens, Carriere in Rev. Hort. vol. vii. (1858), p. 579. 



Y. tortifolia, Lindheim. inedit. 



There are three distinct types of Yucca in leaf-character. 

 The first group has the leaf margined with minute horny 

 teeth, the second with a narrow entire brown horny border, 

 whilst in the third the margin breaks up into slender wiry 

 threads. The present plant is the only species of the first 

 group which is hardy anywhere in England. It is a native 

 of Texas, New Mexico, and the northern provinces of 

 Mexico. It was gathered lately by Mr. C. Gr. Prino-l e 

 on rocky hills near Chihuahua, flowering in the middle °of 

 April and producing fruit in May. It was introduced 

 into cultivation by M. Trecul, from Texas, about the 

 year 1850, but is still rare in English gardens. Our 

 drawing was made from a plant which flowered with 

 Canon Ellacombe at Bitton in the autumn of 1890. 



Desce. Nearly or quite acaulescent. Leaves densely 

 rosulate, pale green, ensiform, stiffly suberect. above two 

 feet long, an inch and a half broad at the middle, narrowed 

 gradually to a long pungent point and to half an inch 

 above the clasping base, margined with a minutely-toothed 

 horny brown border. Peduncle stout, erect, a little longer 



May 1st, 1891. 



