1144 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Leaves acute or acuminate. 

 Leaves usually quickly glabrate on the upper surface ; flower clusters 



partly short-pedunculate 11. B. cordata. 



Leaves persistently tomentose on the upper surface ; flower clusters 



all sessile 12. B. crotonoides. 



Leaves acute to attenuate at base or decurrent. 

 Flower clusters in panicled spikes or racemes. 



Flower clusters all closely sessile 13. B. floccosa.* 



Flower clusters, at least the lower ones, pedunculate- 14. B. americana. 

 Flower clusters loosely paniculate, neither spicate nor racemose. 



Flowers 4 mm. long 15. B. nitida. 



Flowers 2 to 3 mm. long 16. B. parvifl.ora. 



1. Buddleia marrubiifolia Benth. in DC. Prodr. 10: 441. 1846. 

 Chihuahua, Coahuila, Nuevo Leon, and Zacatecas; type from Monterrey, 



Nuevo Leon. Western Texas. 



Shrub, about 1 meter high or less ; leaves short-petiolate, oval, rounded, or 

 rhombic, acute or decurrent at base, coarsely crenate, densely stellate-tomen- 

 tose ; flower heads globose, 10 to 12 mm. in diameter, very dense, the flowers 

 yellow or orange. " Azafran " ("saffron"; Zacatecas, Coahuila); " azaf ran 

 del campo " (Chihuahua, Coahuila); " azaf rancillo," " azafranillo " (Coa- 

 huila). 



A decoction of the flowers is employed in Coahuila to give a yellow or orange 

 color to vermicelli and butter. The decoction is used also in the form of a 

 bath for rheumatism, and the plant is used popularly as an aperitive and di- 

 uretic. 



2. Buddleia saltillensis Kranzlein, Bot. Jahrb. Engler 50: Beibl. Ill: 41. 



1913. 



Type from Saltillo, Coahuila (the locality is given erroneously by Kranz- 

 lein as "Texas"). 



Leaves lanceolate, petiolate, short-pilose above, ferruginous-tomentose be- 

 neath ; flower heads few or several-flowered, 2 cm. long, subcylindric ; calyx 2.5 

 mm. long. 



Known to the writer only from the original description. 



3. Buddleia wrightii Robinson, Bot. Gaz. 16: 341. 1891. 

 Sonora to Tepic; type from Mazatlan River, Sinaloa. 



Shrub, 2 to 3 meters high ; leaves ovate to narrowly lanceolate, 6 to 22 cm. 

 long, acuminate or attenuate, attenuate or abruptly decurrent at base, serrate 

 or entire, tomentulose or glabrate ; flower heads 1 to 1.5 cm. in diameter. " Te- 

 posana " (Sinaloa). 



Perhaps only a form of B. sessUiflora. 



4. Buddleia chapalana Robinson, Proc. Amer. Acad. 26: 169. 1891. 

 .Jalisco ; type from Lake Chapala. 



Shrub, 1 meter high or less; leaves oblong to rhombic-ovate, 2.5 to 6.5 cm. 

 long, acute, stellate-pilose, the petioles united at base around the stem ; flower 

 heads slender-pedunculate, about 1 cm. in diameter, very dense, globose. 



5. Buddleia perfoliata H. B. K. Nov. Gen. & Sp. 2: 346. 1817. 

 Buddleia spJiaerantha Schlecht. & Cham. Linnaea 5: 104. 1830. 



San Luis PotosI, Veracruz, Queretaro, Hidalgo, and Puebla ; type collected 

 between Chalco and Mexico. 



Shrub, 1 to 1.5 meters high, densely brownish-tomentose throughout ; leaves 

 lanceolate to oblong, 3 to 8 cm. long, acute or attenuate, narrowed and connate 



