STANDLEY TREES AND SHRUBS OF MEXICO. 97 



16. Nolina parviflora (H. B. K.) Hemsl. Biol. Centr. Amer. Bot. 3: 372. 1884. 

 Cordyline parviflora H. B. K. Nov. Gen. & Sp. 1: 268. 1815. 



Roulinia Jiumboldtiana Brongn. Ann. Sci. Nat. II. 14: 320. 1840. 

 Nolina altamiranoa Rose, Proc. U. S. Nat. Mus. 29: 438. 1905. 

 Veracruz, Puebla, and Mexico ; type from between Hauhtitlan and Tane- 

 pantla. 



Trunk 2 to 4 meters higli ; leaves 1.5 to 2.5 cm. wide. 



17. Nolina long-ifolia. (Schult.) Hemsl. Biol. Centr. Amer. Bot. 3: 372. 1884. 

 Yucca longifolia Schult. Syst. Veg. 7: 1715. 1830. 



Roulinia karioinskiana Brongn. Ann. Sci Nat. II. 14: 320. 1840. 

 Oaxaca and Puebla ; type from San Jose del Oro. 



Trunk 2 to 3 meters high, swollen at the base, sparsely branched at the top ; 

 leaves very long, recurved tjver the ti'unk, 2 to 3 cm. wide, 



6. CALIBANUS Rose, Contr. U. S. Nat. Herb. 10: 90. 1906. 

 1, Calibanus hookerii (Lem.) Trel. Proc. Amer. Phil. Soc. 50: 426. 1911. 



Dasi/lirion hookerii Lem. 111. Hort. Lem. 6: Misc. 24. 1859. 



Dasylirion caespitosum Scheidw. Wochenschr. Ver. Beford. Gartenb. 4: 286. 

 1861. 



Calibanus caespitosus Rose, Contr. U. S. Nat. Herb. 10: 90. 1906. 



Hidalgo and San Luis Potosi; type from Real del Monte, Hidalgo. 



A very curious and remarkable plant, the trunk subglobose, 30 to 100 cm. in 

 diameter, resembling a puffball, attached to the soil by small roots, the interior 

 loosely spongy, the exterior covered with dark corky bark like that of some 

 ciaks ; leaves 30 to 90 cm. long, 2 to 2.5 mm. wide, appearing in clusters here and 

 there over the trunk, pale green, serrulate; flowers dioecious, purplish, very 

 small, arranged in panicles 10 to 20 cm. long and 10 cm. broad. 



7. BEAUCABNEA Lem. 111. Hort. Lem. 8: Misc. 57. 1861. 

 Reference: Trelease, Proc. Amer. Phil. Soc. 50: 427^31. 1911; Rose, Contr. 

 U. S. Nat. Herb. 10: 87-89. pi. 23. 1906. 



Treelike plants, the trunks sometimes 10 meters high, more or less swollen at 

 the base ; leaves long, linear ; flowers small, whitish, panicled. 



The leaves are used for the same purposes as those of Dasylirion and 

 Nolina. 



Leaves with papillose grooves and rough margins, firm, more or less concave, 

 keeled, pale or glaucous ; fruit short-pedicellate. 



Loaves 8 to 15 mm. wide; seeds 4 to 5 mm. long 5. B. stricta. 



Leaves 4 to 7 mm. wide; seeds 3 mm. long 6. B. gracilis. 



Leaves with smooth grooves and nearly smooth margins, thin, nearly flat, 

 green ; fruit long-pedicellate. 



Leaves 1.5 to 2 meters long 1. B. recurvata. 



Leaves 1 meter long or shorter. 



Fruit 18 to 20 mm. long 4. B. g'oldmanii. 



Fruit 10 to 15 mm. long. 



Perianth segments scarcely 2 mm. long 2. B. inermis. 



Perianth segments 3 mm. long 3. B. pliabilis. 



1. Beaucarnea recurvata Lem. 111. Hort. Lem. 8: Misc. 61. 1861. 

 Beaucarnea tuberculata Roezl, Belg. Hort. 33: 138. 1883. 

 Nolina recurvata Hemsl. Biol. Centr. Aioer. Bot. 3: 372. 1884. 

 Dasylirion recurvatum Macbride, Contr. Gray Herb. n. ser. 56: 17. 1918. 

 Veracruz. 

 Trunk openly branched ; leaves 1.5 to 2 meters long, 1.5 to 2 cm. wide. 



