STANDLEY TREES AND SHRUBS OF MEXICO 1335 



many-flowered, the flowers short-pedicellate; calj^x about 5 cm. long, the lobes 

 narrowly linear, foliaceous, densely glandular-pilose; corolla about 7 cm. long, 

 sparsely pilosulous outside, the tube 3 cm. long, 2 to 3 mm. thick, the throat 

 3 cm. long, nearly 2 cm. broad, the lobes 1 cm. long, oi^tuse or acutish; anthers 

 7 mm. long, equaling the corolla lobes. 



11. Ruellia leucantha T. S. Brandeg. Zoe 5: 109. 1901. 

 Southern Baja California. 



Shrub, about 80 cm. high, the branches densely pubescent with eglandular 

 hairs; leaves broadly ovate or oblong-ovate, 3 to 6.5 cm. long, acute or short- 

 acuminate, entire, densely pubescent; calyx 1.5 to 2 cm. long; corolla about 

 6 cm. long. 



12. Ruellia hirsuto-glandulosa (Oerst.) Hemsl. Biol. Centr. Amer. Bot. 2: 

 505. 1882. 



Dipteracanthus hirsuto-glandulosus Oerst. Nat. For. Kjobenhavn Vid. Medd. 

 1854: 123. 1854. 



Queretaro, Hidalgo, and Puebla, and perhaps elsewhere; type material from 

 Hacienda Buena Vista, Veracruz, and Tehuacan, Puebla. 



Shrub; leaves broadly ovate or oblong-ovate, 1 to 3.5 cm. long, obtuse or acute, 

 entire, densely stellate-pubescent and glandular-puberulent; calyx 2 to 2.5 cm. 

 long; corolla 5 to 7 cm. long. 



13. Ruellia californica (Rose) I. M. Johnston, Proc. Calif. Acad. IV. 12: 

 1171. 1924. 



Calophanes californica Rose, Contr. U. S. Nat. Herb. 1: 85. 1890. 



Baja California and Sonora; type from Santa Rosalia, Baja California. 



Shrub, 1 meter high or less, densely glandular-puberulent or glandular-hirtel- 

 lous; leaves broadly ovate or oblong-ovate, 1 to 3 cm. long, acute or acuminate, 

 entire; calyx 1 to 1.5 cm. long; corolla 4.5 to 5.5 cm. long. 



4. BRAVAISIA DC. Bibl. Univ. Geneve 17: '124. 1838. 



Shrubs or trees; leaves petiolate, entire or sinuate-dentate; flowers in paniculate 

 cymes or thyrses; calyx 5-cleft, the lobes subcoriaceous, rounded at apex; corolla 

 tube short, the throat ampliate, campanulate, the lobes subequal, rounded, 

 spreading; stamens 4; ovules 2 to 4 in each cell of the ovary. 

 Bractlets shorter than the calyx; bracts mostly small and inconspicuous. 



1. B. integerrinia. 



Bractlets longer than the calyx; bracts large and leaflike 2. B. tubiflora. 



1. Bravaisia integerrima (Spreng.) Standi. 



Amazonia integerrima Spreng. Syst. Veg. 3: 765. 1826. 



Bravaisia floribunda DC. Prodr. 9: 240. 1845. 



Onychacanthiis berlandierianus Nees in DC. Prodr. 11: 217. 1847. 



Tamaulipas to Guerrero and Oaxaca. Central and South America. 



Shrub or tree, 3.5 to 15 meters high, the young branches finely puberulent; 

 leaves elliptic-oblong to elliptic, mostly 8 to 19 cm. long, acute or acuminate, 

 acute or sometimes obtuse at base, glabrous or nearly so; corolla white, about 

 2 cm. long. "Palo bianco" (Guerrero); "palo de agua" (Costa Rica). 



The genus Androcentrum Lem.' was based upon a single species, A. muliiflorum, 

 described from Mexico. The specimens referred to that species, which have been 

 seen by the writer, do not appear to diff'er from Bravaisia integerrima. 



' Fl. Serr. Jard. 3: 242. 1847. 



