'91 1-] TRELEASE— THE DESERT GROUP XOLIXE.E. 427 



Shortly caulescent. Trunk depressed globose with numerous 

 crowns of leaves. Leaves rather thin, somewhat concave and keeled, 

 narrowly linear, 2-^ mm. wide, serrulate-scabrous on the margin, 

 not brush-like at tip, blue. Inflorescence scarcely 25 cm. long, 

 ^.^-^ shorter than the leaves, verv short-peduncled, simply 



Q"^ Ojjv>^ panicled with thin spreading branches 6-8 cm. long, 

 ~~^ ^- or with exceptional very short and few basal branch- 

 lets. Bracts scarious, much shorter than the subtended branches, 

 the iloriferous ones and the bractlets inconspicuous, ovate or lanceo- 

 late, little-toothed. Flowers minute. Perianth segments about i 

 mm. long. Fruit triquetrously subglobose, 3-ribbed, 4-5 X 5-/ mm. 

 Seed melon-shaped, 3 X 3-4 mm. — PI. 6, 8, p, 11, 14. 



East-central Mexico. The type locality is Real del ]\Ionte. 



Specimens examined : Hidalgo. Ixmiquilpan ( Rose, Painter & 

 Rose, 8pj4, 1905; Pur pus, 1200, 472 5, 1905). Sax Luis Potosi. 

 San Luis Potosi {Orcutt, 1903; Palmer, 1905). 



Beaucarxea. 



Lemaire. 111. Hort. 8. misc. p. 57, with plate. 1861. — Baker, 



Journ. Bot. 10: 323. 1872; Journ. Linn. Soc, Bot. 18: 233. 1880, 



— in both cases including Xolina. — Rose, Contr. U. S. Nat. Herb. 



10 : 87. 1906. — Though not monotypic, based primarily on B. 



recurvata. and capable of precise definition. 



Leaves with essentialh" smooth grooves and nearly smooth margins, thin, 

 nearly flat, recurved, green. Floriferous bracts rather elongated. Fruit 

 large, rather long-stalked before falling. Slender trees, about 10 m. high, 

 moderately enlarged at base. Eueeaucarxea. 



Beaucarxea recurvata Lemaire, 111. Hort. 8. misc. p. 61. i pi. 

 1861. — Gard. Chron. 1870: 1445. /. 2^4: iii. 46: 4. /. ?. — 

 Deutsch. Gart. Mag. 1871 : 288. pi. — Gartenflora. 28: 210. 

 /. — Croucher, Garden. 19 : 372. /. 



Piiicoiectitia tiiberculata Lemaire, /. c, as synonym. 



Beaucarnca tubereulata Roezl, Belg. Hort. 33: 138. 1883. 



A'oli}ia rccurz'ata Hemsley, Biol. Centr.-Amer. 3 : 372. 1884. — 

 Rehnelt, Gartenwelt. 11 : 78. /. — Gard. & Forest. 9: 94. /. — 

 Fl. des Serres. 18. misc. p. 26. /. — Karsten & Schenck, \'ege- 

 tationsbilder. i. pi. ^4. — Gerome, Rev. Hort. 83: 207. /. 8^. 



A', tubereulata Hort. 



