472 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Low shrub ; leaflets oblong or oval. 4 to 8 cm. long, coriaceous ; flowers 2 to 

 2.5 cm. long, purplish ; fruit tomentose. 



2. Cracca platyphylla Rose, Contr. U. S. Nat. Herb. 12: 270. /. 25. 1909. 

 Known only from the type locality, pine woods between Mascota and San 



Sebastiftn, Jalisco. 



Low shrub ; leaflet one, oval-oblong to broadly oval, 5 to 7 cm. wide, broadly 

 rounded at apex, coriaceous, white-tomentose beneath ; flowers large, ro.se-red. 



3. Cracca diversifolia Rose, Contr. U. S. Nat. Herb. 12: 270. 1909. 

 Michoacan; type from Uruapam. 



Shrub 0.5 to 1 meter high ; leaflets 3, green on the upper surface, densely 

 white-tomentose beneath, the lateral ones smaller than the terminal one; 

 flowers violet, 2.5 cm. long; fruit very densely pilose. 



4. Cracca micheliana Standi. 



Tei)hro8ia major Micheli. MCnn. See. Phys. Hist. Nat. Geneve 34: 251. pi. 4. 



1903. 

 Cracca major Rose, Contr. U. S. Nat. Herb. 12: 270. 1909. Not C. major 



Alef. 1861. 

 Known only from the type locality. El Ocote, Michoacdn or Guerrero. 

 Shrub about a meter high; leaflets sometimes 16 cm. long and 6 cm. wide; 

 flowers white tinged with violet; fruit densely tomentose. 



5. Cracca potosina (T. S. Brandeg.) Standi. 



Tephrosia potosina T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 272. 1912. 



Nuevo Le6n and San Luis PotosI; type from Rasc6n, San Luis Potosf. 



Plants chiefly herbaceous, decumbent; leaflets usually 5, suborbicular, 2 to 

 4 cm. long, sericeous beneath ; fruit densely pilose. 



This plant has been reported from Mexico as Tephrosia lindheimeri A. Gray, 

 but it seems quite distinct from that species. 



6. Cracca watsoniana Standi. 



Clitoria sencea S. Wats. Proc. Amer. Acad. 22: 407. 1887. 



Cracca sericea Rose, Contr. U. S. Nat. Herb. 12: 271. 1909. Not C. sericea 

 A. Gray, 1883. 



Tepic to Guerrero ; type from Rfo Blanco, Jalisco. 



Plants 45 cm. high or less, woody at ba.se ; leaflets 1 or sometimes 5 or 7, 

 linear-oblong to oval. 3 to 8 cm. long, densely white-sericeous beneath ; flowers 

 pui*ple, 2 to 2.5 cm. long. 



7. Cracca madrensis (Seem.) Kuntze, Rev. Gen. PI. 1: 175. 1891. 

 Tephrosia madrensi^s Seem. Bot. Voy. Herald 280. pJ. 61. 1856. 

 Known only from the type locality, somewhere in the Sierra Madre. 

 Leaves unifoliolate. 



8. Cracca rhodantha (T. S. Brandeg.) Rose, Contr. U. S. Nat. Herb. 12: 



270. 1909. 

 Tephrosia rhodantha T. S. Brandeg. Zoe 5: 201. 1905. 

 Sinaloa ; type from Cofradla. 



Slender shrub, 0.4 to 1.8 meters high, or often herbaceous nearly throughout ; 

 leaflets numerous, narrowly oblong ; flowers brick-red or purplish white. 



9. Cracca leiocarpa (A. Gray) Kuntze, Rev. Gen. PI. 1: 175. 1891. 

 Tephrosia leiocarpa A. Gray, PI. Wright. 2: 30. 1853. 

 Tephrosia affinis S. Wats. Proc. Amer. Acad. 21: 424. 1886. 

 Tephrosia viridis Jones, Contr. West. Bot. 12: 7. 1908. 

 Cracca affinis Rose, Contr. U. S. Nat. Herb. 12: 269. 1909. 



Chihuahua and Sonora to Jalisco ; type collected along the Sonoita, in Sonora. 



