1226 CONTRIBUTIONS FEOM THE NATIONAL HERBARIUM. 



8. Bourreria andrieuxii (DC.) Hemsl. Biol. Centr. Amer. Bot. 2: 369. 1882. 

 Ehretia andrieuxii DC. Prodr. 9: 510. 1845. 



Type from Puebla. 



Leaves ovate, 2.5 to 4 cm. long, 1.2 to 2 cm. wide, rounded at base, canescent- 

 pubescent ; cymes short, few-flowered ; calyx 4 mm. long ; corolla tube 4 mm. 

 long, the lobes 8 mm. long. 



9. Bourreria spathulata (Miers) Hemsl. Biol. Centr. Amer. Bot. 2: 370. 1882. 

 Crematomia spathulata Miers, Ann. Mag. Nat. Hist. IV. 3: 310. 1869. 



Type from Mexico. 



Leaves elongate spatulate-oblong, 2.5 to 4 cm. long, 6 to 14 mm. wide, obtuse, 

 scabrid above, strigose beneath, the margins revolute; cymes shorter than the 

 leaves, 4 to 6-flowered; calyx 6 mm. long; corolla tube 1 cm. long. 



10. Bourreria strigosa T. S. Brandeg. Univ. Calif. Publ. Bot. 3: 390. 1909. 

 Puebla ; type from Barranca de Tlacualosto. 



Shrub, 1.8 to 3 meters high ; leaves nearly sessile, obovate or obovate-oblong, 

 1.5 to 2.5 cm. long, rounded at apex, cuneate at base ; cymes short, 6 to 12- 

 flowered; calyx 5 to 6 mm. long; corolla about 8 mm. long. 



DOUBTFUL SPECIES. 



Bourreria huanita (Llave & Lex.) Hemsl. Biol. Centr. Amer. Bot. 2: 370. 1882. 



Morelosia huanita Llave & Lex. Nov. Veg. Descr. 1: 1. 1824. 



Crematomia huanita Miers, Ann. Mag. Nat. Hist. IV. 3: 313. 1869. 



Type from Morelia, MichoacS^n. 



Tree ; leaves ovate, 7.5 to 10 cm. long, long-petiolate, lustrous ; cymes many- 

 flowered ; calyx ventricose-tubular, 5-lobate ; corolla tube not exceeding the 

 calyx, the lobes rounded ; filaments tomentose at base. 



The writer has seen no specimens of the genus from MichoacS^n. It is 

 probable that the plant is the same as B. formosa, and if so the name B. huanita 

 should replace that one. Bourreria huanita is mentioned in various Mexican 

 publications and the following vernacular names are reported : " Huanita " 

 (Michoac5,n) ; " izquixochitl," " esquisflchil " ; " jazmin de Tehuantepec " 

 (Oaxaca) ; " yaga guiexoba " (Oaxaca, Zapotec). 



3. EHRETIA L. Syst. Nat ed. 10. 936. 1759. 

 Shrubs or trees; leaves alternate, entire or serrate; flowers small, white, 

 the cymes arranged in chiefly terminal panicles; calyx 5-parted; corolla tube 

 short, the limb with 5 obtuse spreading lobes ; style bifid ; fruit a small drupe. 



Leaves entire. 



Leaves smooth on the upper surface 1. E. tinifolia. 



Leaves very scabrous on the upper surface 2. E. elliptica. 



Leaves serrate, at least near the apex. 



Leaves glabrous and smooth beneath 3. E. luxiana. 



Leaves scabrous or pubescent beneath, at least along the costa. 

 Leaves mostly rounded or obtuse at apex ; corolla puberulent or scaberulous. 



2. E. elliptica. 

 Leaves acute or acuminate ; corolla glabrous. 



Corolla about 10 mm. long - 4. E. tehuacana. 



Corolla 7 mm. long or less. 



Inflorescence glandular-puberulent 5. E. viscosa. 



Inflorescence without glandular pubescence. 



Leaves cordate at base 6. E. cordifolia. 



Leaves rounded to acute at base 7. E. latifolia. 



