ROBINSON. — JAECxERIA AND RUSSELIA. 821 



* * * Stems sub-terete, merely striate-angulate. 



-t- Branches of the inflorescence pseudo-racemose, elongated, loosely flowered: 

 leaves large, thickish, veiny, tomentulose beneath. 



11. R. rotuxdifolia, Cav. Icon. v. 9 (1799), t. 415. — Near Aca- 

 pulco, Mexico. Dr. Palmer's no; 509 must be of this species. 



-t- -<- Branches of the glomerate inflorescence cynaose, many-flowered : leaves 

 thin, acute or acutish : stem glabrous. 



12. R. mtjltiflora, Sims, Bot. Mag. t. 1528 (1813). — R. pani- 

 culata, Mart. & Gal. Bull. Acad. Brux. xii. pt. 2. 19 (1845), appears to 

 be merely a verticillate- leaved form of this species. . 



1- +- ■*- Inflorescences cymose, very short, opposite on prolonged branches: 

 flowers very small: leaves bullate, obtuse: stem pubescent. 



13. R. tepicensis. Probably suffruticose ; stems subterete, striate- 

 angulate with many line ribs, subappressed-pubescent, internodes con- 

 siderably exceeding the termite broadly ovate cordate petiolate obtuse 

 crenate-dentate leaves ; these; membranaceous, glabrous and with im- 

 pressed veins, strigillose on the veins and resinous-punctate on the 

 surface beneath, 3 cm. long, 2.1 cm. broad; petioles •'! mm. long, ap- 

 pressed-pubescent : floriferous branches (1 to 1.5 dm. long) mostly verti- 

 cillate toward the ends of the stems: bracts ovate, petiolate, crenulate, 

 small but exceeding the short peduncles (2 to 3 mm. in length); pedicels 

 and subulate bractlets pubescent: calyx-lobes ovate, acuminate to slender 

 recurved tips, puberulent near the middle, thin at the margin, 2 mm. 

 long: corolla G to 7 mm. long, bearded near the base within, externally 

 glabrous; lobes spreading : capsule ovoid, nearly spherical, glabrous, 

 lucid, small, 3 to 4 mm. in length, slightly grooved between the carpels; 

 these slightly carinate dorsally. — Collected at Zopelote, Tepic, Mexico, 

 February. 1895, altitude 600 to 900 m.. by Frank H. Lamb, no. 578. 

 Type in herb. Gray. This species is distinguished from R. sarmentosa, 

 Jacq., by its subterete pubescent stems, ternate subcordate leaves, and 

 very small flowers. R. rotund if olia, Cav. and R. multiflora, Sims, the 

 only other species with subterete steins known to the writer, have much 

 larger inflorescences and also differ in the form and pubescence of the 

 leaves. 



VOL. XXXV. — 21 



