258 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 



2. Iresine pacifica Standi. Coiitr. U. S. Nat. Herb. 18: 96. 1916. 

 Sinaloa to Colinia ; type from Manzanillo. 



Slender erect shrub, or often herbaceous, nearly glabrous; leaves ovate 

 or lanceolate, 4 to 10 cm. lohg. 



3. Iresine angustifolia Euphras^n, Beskr. St. Barthel. 165. 1795. 



Iresine elatior Rich. ; Willd. Sp. PI. 4: 766. 1805. 



Veracruz; Baja California. West Indies; Costa Rica to Brazil and Ecua- 

 dor; type from St. Bartholomew Island, West Indies. 



Much-branched shrub, a meter high, or often herbaceous, nearly glabrous; 

 leaves mostly lanceolate, 5 to 10 cm. long. 



4. Iresine arenaria Standi. Contr. U. S. Nat. Herb. 18: 93. 1916. 

 Sinaloa, on sandy hillsides, the type from Topolobampo. 

 Plants erect, fruticose at base, nearly glabrous; leaves mostly lanceolate, 



2.5 to 4.5 cm. long. 



5. Iresine tomentella Standi. Contr. U. S. Nat. Herb. 18: 97. 1916. 

 Known only from the t3'pe locality, G6mez Farias, Tamaulipas. 

 Erect shrub, 1.5 to 2 meters high, with white flowers. " Tepozau." 



6. Iresine hartmanii Ulhie, Field Mus. Bot. 1: 422. 1899. 

 Sonora and Duraugo ; type from Granados, Sonora. 

 Shrub, 1.5 to 2.5 meters high. 



7. Iresine herrerae Blake, Contr. Gray Herb. n. ser. 53: 55. 1918. 

 Known only from the type locality, Rio Concordia, Oaxaca. 

 Erect shrub, 3 meters high, glabrous. 



8. Iresine palmeri (S. Wats.) Standi. Journ. Washington Acad. Sci. 5: 395. 



1915. 

 Hebanthe palmeri S. Wats. Proc. Amer. Acad. 18: 144. 1883. 

 Nuevo Le6n to Veracruz ; type from Guajuco, Nuevo Le6n. 

 Scandent or decumbent shriib, nearly glabrous ; leaves mostly ovate-oblong, 

 2 to 6 cm. long. 



9. Iresine interrupta Benth. Bot. Voy. Sulph. 156. 1844. 



Alternaiithera richardii Moq. in D. C. Prodr. 13': 353. 1849. 



Hebanthe snbnuda Hemsl. Biol. Centr. Amer. Bot. 3: 20. 1882. 



Sonora to San Luis PotosI, Veracruz, and Puebla ; type from Tepic. Guate- 

 mala. 



Scandent or reclining shrub, 4 to 6 meters long, nearly glabrous, with pale 

 stems ; leaves broadly ovate or lanceolate, acute or attenuate. " Barba. del 

 viejo " (Sinaloa). 



10. Iresine rotundifolia Standi. Contr. U. S. Nat. Herb. 18: 96. 1916. 

 Puebla ; type froiu San Luis Tultitlanapa. 

 Leaves 3.5 to 17 mm. long, tomentose beneath. 



11. Iresine pringlei S. Wats. Proc. Amer. Acad. 25: 101. 1890. 

 On rocky slopes, .Jalisco to Puebla and Oaxaca ; type from Guadalajara. 

 Erect shrub, 1.5 to 3 meters high; leaves ovate, 4 to 8 cm. long, acuminate; 



flowers in large panicles. 



12. Iresine stricta Standi. Contr. U. S. Nat. Herb. 18: 97. 1916. 

 Puelila and Oaxaca ; type from TehuacSn, Puebla. 

 Erect shrub, 30 to 80 cm. high ; leaves oval to ovate, 1.3 to 3.5 cm. long. 



13. Iresine nitens Standi. Contr. IJ. S. Nat. Herb. 18: 95. 1916. 

 Known only from the tyi^e locality, TehuacSn, Puebla. 

 Low erect shrub ; leaves lanceolate, 2 to 6 cm. long, acute. 



