STANDLEY TREES AND SHRUBS OF MEXICO. 347 



Barbs stout, all borne at the apex of the spine, in an umbrella- 

 like whorl. 

 Upper petals, at least the middle one, with broad rounded 



blades 8. K. bicolor. 



Upper petals with narrow, linear or lanceolate blades. 



Plants densely leafy, the branches not conspicuously spinose; 



fruit closely sericeous 9. K. grayi. 



Plants very sparsely leafy, the branches spinose ; fruit with 



spreading or loosely ascending hairs 10. K. paucifolia. 



Barbs of the spines scattered along the upper part of the spine. 



Body of the fruit strongly compressed 11. K. parvifolia. 



Body of the fruit very slightly or not at all compressed. 



Body of the fruit 4 to 5 mm. thick, the spines short and stout. 



12. K. revoluta. 

 Body of the fruit 6 to 7 mm. thick, the spines long and slender. 



13. K. interior. 



1. Krameria cytisoides Cav. Icon. PI. 4: 61. pL 390. 1797. 

 Krameria cinerca Schauer, Linnaea 20: 725. 1846. 



Kromeria elirenhergii Gandog. Bull. Soc. Bot. France 60: 455. 1913. 



Coahuila and Tamaulipas to Hidalgo and Puebla. 



Erect shrub, 0.8 to 1.8 meters high ; leaflets oblong-oblanceolate or obovate, 

 2 cm. long or shorter, sericeous ; flowers purplish, the sepals about 2 cm. long. 

 " Donape." 



Roots used for dyeing wool. 



2. Krameria palmeri Rose, Coutr. U. S. Nat. Herb. 1 : .304. pj. 27. 1895. 

 Sinaloa and southern Sonora ; tj'pe from Agiabampo, Sonora. 



Dense shrub, 60 to 90 cm. high; leaves linear, 1 to 2 cm. long; fruit yellowish 

 or purplish, about 8 mm. in diameter. 



3. Krameria cuspidata Presl, Reliq. Haenk. 2: 103. 1836. 

 Tepic to Oaxaca. 



Low shrub; flowers purplish, about 8 mm. long. " Viuxita " (Oaxaca). 



4. Krameria glandulosa Rose & Painter, Contr. U. S. Nat. Herb. 10: 108. 1906. 

 Dry mesas and hillsides. Chihuahua to Baja California. Western Texas to 



Utah and California ; type from El Paso, Texas. 



Low, densely branched shrub ; leaves sericeous, 1 to 2 cm. long ; flowers ratlier 

 showy, purplish, 6 to 8 mm. long. 



5. Kram.eria secundiflora DC. Prodr. 1: 341. 1824. 

 Krameria pauciflora DC. Prodr. 1: 341. 1824. 

 Chihuahua and Coahuila to Oaxaca. 



Plants woody only near the base and scarcely to be classed as shrubs ; leaves 

 linear or linear-lanceolate, 6 to 15 mm. long, acute; flowers yellowish, about 

 1 cm. long. " Zarzaparrilla " (San Luis Potsi) ; " raiz de cuculillo " (Jalisco). 



The long black roots somewhat resemble those of the commercial sarsaparilla. 



6. Krameria prostrata T. S. Brandeg. Zoe 5: 200. 1905. 



Krameria diffusa Rose & Painter, Contr. U. S. Nat. Herb. 10: 107. 1906. 

 Sinaloa to Zacatecas, Morelos, and Guerrero; type from Cofradia, Sinaloa. 

 Simlar in habit to the preceding species, but with purplish llnwers, these 1 

 to 1.5 cm. long ; leaves linear, 1 to 2 cm. long, acute, green. 



7. Krameria ramosissima (A. Gray) S. Wats. Proc. Amer. Acad. 17: 326. 1882. 

 Krameria parrifolia ramosissima A. Gray, PI. Wright. 1: 41. 1852. 

 Tamaulipas, and reported from Coaliuila and Nuevo Leon. Western Texas 



(type locality). 



