STANDLEY TKEES AND SHRUBS OF MEXICO. 485 



Joints of the fruit not notched. 

 Leaves unifoliolate. 



Fruit glabrous 4. M. pallida. 



Fruit puberulent 5. M. psilophylla. 



Leaves 3-foliolate. 

 Joints of the fruit closely folded together. 



Leaflets oblong or ovate-obloug 6. M. plicata. 



Leaflets oval or suborbicular 7. M. plectocarpa. 



Joints of the fruit not folded together. 



Joints twice as long as wide or longer 8. M. foliosa. 



Joints much less than twice as long as wide. 

 Pubescence of the stems of numerous closely appressed hairs. 



Leaflets broadly rounded at apex ; fruit sericeous--9. M. robinsonii. 

 Leaflets acute or acutish ; fruit glabrous or puberulent. 



Bracts cuspidate-acuminate 10. M. conzattii. 



Bracts obtuse or acutish 11. M. jaliscana. 



Pubescence of the stems of spreading or recurved hairs, or wanting. 

 Fruit glabrous or nearly so. 

 Leaflets suborbicular or obovate-orbicular. 

 Joints of the fruit 4 mm. long ; leaflets mostly obovate-orbicular. 



12. M. rubricaulis. 

 Joints of the fruit 5 to 6 mm. long ; leaflets suborbicular. 



13. M. orbicularis. 

 Leaflets oval to narrowly oblong. 



Joints of the fruit longer than broad. 



14. M. chartacea. 



Joints of the fruit suborbicular 15. M. nitida. 



Fruit copiously puberulent or pilose. 



Leaflets mostly oval or suborbicular, rounded at apex. 



16. M.cinerea. 

 Leaflets ovate to narrowly oblong or lanceolate, acute or acutish, 

 or at least narrowed to the apex. 

 Leaflets 5 cm. long or shorter ; bracts small. 



17. M. ghiesbreghtii. 

 Leaflets 6 to 17 cm. long ; bracts large and conspicuous. 



Leaflets linear-lanceolate, glabrate beneath. 



18. M. macrostachya. 

 Leaflets ovate, sericeous beneath 19. M. amplifolia. 



1. Meibomia painteri Rose & Standi. Contr. U. S. Nat. Herb, 16: 214. 1913. 

 Known only from the type locality, Iguala Canyon, Guerrero. 



Plants scandent, sulf rutescent ; leaflets orbicular. 3 to 8 cm. long; joints of 

 the fruit about 1 cm. long and broad. 



2. Meibomia angustata Rose & Standi. Contr. U. S. Nat. Herb. 16: 215. 1913. 

 Known only from the type locality, between San Sebastian and Las Palmas, 



Jalisco. 



Leaflets ovate-lanceolate. 2.5 to 8 cm. long. 



3. Meibomia purpusii (T. S. Brandeg.) Blake, Contr. U. S. Nat. Herb. 24:6. 



1921. 

 Dmmodium lunatum T. S. Brandeg. Zoe 5: 246. 1908. Not D. lunotum Huber. 



1906. 

 Dcsmodium purpvsii T. S. Brandeg. Univ. Calif. Pnbl. Bot. 6: .'>3. 1914. 

 Veracruz ; type from Zacuapan. 

 Scandent shrub ; leaflets 5.5 to 9.5 cm. long, acute. 



