tf * 



^ J- 



■L 



■ tr 



t '' 



, 4 



h H 



ROSE MEXICAX AND CEKTilAL AMEBICA^^ PT.AXTS. 



89 



Beaucarnea pliabilis (Baker) Rose. 



DfLsijUrion 2ylMiIe BskeVj Journ. Linn. Soc. 18: 240. 1881. 



/*. plialyUls has heretofore only been known fi-oni Schott's S])et;imen collected many 

 yearn a^o at Sisal, Yucatan. In 1902 Mr. E. A. Goldman collected leaves and took 

 photoo^rapliy of this species ^t Trogreso not far from Sisal. These ijidicate a species 

 closely related to B. (jiudemalemh, but the leaven are shorter and perfectly smooth 

 and evidently belong to a quite distinct plant. 



Collected by E, W Gol<linan at IVogreso, Yncutan, February 24 to March 5, 1901 

 (no, 607, photograph no. 221 1). 



Beaucarnea purpusi Rose, sp. nov. 



Tree 6 to 8 meters high, somewhat swollen at base^ a little branched, the trunk 

 almost completely clothed by the reflexed and closely appressed old leaves; leaves 

 at first erect, then spreading, and at last reflexed, long-persisting, very pale, 60 to 

 60 cm. long, 10 to 12 mm. broad, the margin pale and entire. 



Type specimen U. S. Xatiunal Herbarium no. 45;JG59, collecte<l by J. N. Rose and 

 Jos. 11. Painter near Tehuacan, Puebla, in 1905 (no. 10156). 



Beaucarnea recurvata Lemaire, Illust. Hurtic. 8: Misc. 59. 18C1. 



Brftiwarnea recurvata was introduced into cultivation from :\kxi(^o about 1845, but 

 the station from which it was obtained is not known. The specimen cited under 

 this name in the Biologia CentraU-AmerlcaTia belongs to a true Nolina, X. alto- 

 mIranotuuL 



Beaucarnea stricta Lemaire, Illust. Ilortic. 8: :\Iisc. 61. 186h 



Jiraffrarnea strkta is a glaucousdeaved species, only known from garden speci- 

 mens. It is often confused \\\i\\ Xolina hadivajhuux and B. recarvaia, Beaucarnea 

 glauai, another garden plant, may or may not belong here. 



DASTLIIITOX. 



a 



After (\\cluditig the species belonoring to NoHna and Beaucarnea 

 cl(^V(Mi t^pccies still remain belono-ino- to I)as3dirion, Some of these 

 arc not veiy well known. Below is 

 <;-iven a list of them witli the descrip- 

 tion of one that is n(nv. 



Dasylirion acrotriclium Zucc. Abh. Aka.l. 



Muench. 3: 228. 1848. 



I 

 Dasylirion berlandieri S. Wats. Proc. Am. 



Acad. 14: 249. 1879. 



\ 



Dasylirion flexile C. Kot^h, Ind. f-^ern, Hort. 

 Bern]. 1867: app. 1. 5. 18()7. 



Dasylirion g^laucophylluni Hook. Bot. 

 ]Mag. 84: j>/. 504 1. hSo8. 



Dasylirion graminifolium Zu(v. Al>li. Akad. Muc^ich. 3: 225. 1843. 



Dasylirion long:issimum Li'm. IHuHtr. Hortic. 3: MI^a\ 91. 185(>. 



Das/lirion quadrangulatum S. AVatn. T'roc. Am. Acad. 14: 250. 1879. Figure 3 



Dasylirion serratifolinm Zucc. Abli. Akad. Muench. 3: 225. 1843. 



Dasylirion texanum Sclieele, Linnaea23: 110. 1850, 



Dasylirion wheeleri S. Wats. Troc. Am. Ac^ad. 14: 249. 1879. 



Fig. S.— Fruit of Dasylirion quadrangulatum i 

 a, Side view; ?>, cross section showing seed; 

 r, cKJsy section sliowiiiff undeveloped 

 ovulcH at base. AH srnlc 2. ' 





l 



w - -fc 



--^, 



}■ ' \ 



-^ ^ 



«Dasylikion Zuc(^ Otto c^ Dietr. WW. Cartenz. «; 258. 1838 



