474 PROCEEDINGS OF THE AMERICAN ACADEMY. 



leaflets rhombic-ovate or obovate, lucid and iinely pubescent above, to- 

 mentulose beneath, destitute of setae and ciliation, piunately veined ; the 

 lateral 1.5 to 2.5 cm. long, subsymmetrical, the terminal twice as large, 

 oblique and with excentric miduerve : globular heads (7 mm. in diameter) 

 white, racemosely disposed on the long spreading unarmed grayish to- 

 mentose branches of a loose panicle ; pedicels slender, 1 cm. long : corolla 

 4-parted to the middle, its lobes short-oblong, rounded at the apex : 

 -; Linens 8: pods 5 cm. long, 7 to 10 mm. broad, glabrous and lucid 

 upon the disarticulating valves but finely papillose under a strong 

 lens, dark brown, unarmed except for a few scattered minute recurved 

 spines upon the tomentulose replum; rectangular segments thin, broader 

 than long. — Collected by the late Dr. Sereno Watson in the eastern 

 portions of Vera Paz and Chiquimula, Guatemala, in 1885, nos. 323 in 

 fruit and 185 in flower. Types in herb. Gray. This species of the sub- 

 genus Habbasiti is closely related to the South American M. Spruceana, 

 Benth. From this it differs, however, in the much less dense and less 

 rufescent pubescence of the stem, more strongly armed petioles, less numer- 

 ous leaflets of different venation and finally in its much smaller fruit, 

 which i-> at full maturity less than half as broad as in the Brazilian plant. 



Russelia Deamii. Stems becoming l.G m. long, 4-angled below, 

 6-angled toward the ends, copiously branched, glabrous except on the 

 smaller branchlets, with slender ribs at the angles: leaves 1.5 to 2 cm. 

 long, two thirds as wide, ovate, acute, incisely serrate except near the 

 cuneate base, green, loosely pubescent and sparingly punctate above, 

 slightly paler and strongly white-villous beneath especially about the 

 larger nerves and near the base : cymes numerous, 3-flowered : peduncles 

 Blender, 1 nun. long, pubescent as are also the filiform slightly longer 

 pedicels; bractlets linear: lobes of the villous calyx lance-acuminate 

 from an ovate base: corolla scarlet, l.G to 2 cm. long, the nearly equal 

 lobes suborbicular : fruit not seen. — Collected at Cuernavaca, Mexico, 

 7 July. 1900, by Charles C. Deam, no. 30. This species differs from 

 R. sarmentosa, .Tacq., in its villous more incisely toothed leaves and 

 6-angled branches, from Ji. jaliscensis, Rob., in the form of its calyx- 

 lobes, from A', polyedra, Zucc, in its larger flowers and glabrous less 

 Btrongly ribbed stems as well as in the form and sharp dentation of the 

 leaves. 



Russelia trachypleura. Stems 6-angled; angles prominent, rib- 

 like, pale, roughened by -mall scattered callosities; areas between the 

 ribs flat, green, glabrous or (especially near the nodes) somewhat hairy ; 

 branches usually 4-angled : leaves temate on the stem, opposite on the 



