STANDLEY TEEES AND SHRUBS OF MEXICO 1369 



Michoacan to Oaxaca and Veracruz. Cuba; Central America and Colombia; 

 type from Ancon Hill, Panama. 



Slender shrub, 3 meters high or less; leaves petiolate, ovate or lanceolate, 

 7 to 14 cm. long, acuminate, acute, or obtuse at base, pilose or glabrate beneath; 

 inflorescence dense, spikelike, 8 to 24 cm. long; calyx 4-lobate; corolla white, 

 salverform, 10 to 17 mm. long, the tube slender, glabrous or sparsely pilose; 

 fruit globose, tetracoccous, 3 to 4 mm. broad, fleshy at maturity and black; seeds 

 numerous, minute. 



DOUBTFUL SPECIES. 



DuGGENA NiVEA (Bartl.) standi. Contr. U. S. Nat. Herb. 18: 125. 1916. 

 Gonzalea nivea Bartl.; DC. Prodr. 4: 436. 1830. Described from Mexico. 

 Probably a species of Rondeletia. 



GoNZALAGUNiA PARViFLORA Schlecht. & Cham. Linnaea 6: 414. 1831. Type 

 from Cuesta Grande de Jalacingo, Veracruz. 



Gonzalea secunda Mart. & Gal. Bull. Acad. Brux. IV: 235. 1844. Type 

 from Jalapa, Veracruz. Probably a synonym of Duggena panamensis. 



17. ISERTIA Schreb. Gen. PI. 1: 234. 1789. 

 1. Isertia haenkeana DC. Prodr. 4: 437. 1830. 



Described originally from Mexico, but the species has not been collected recently 

 in Mexico, and the locality may have been given incorrectly. Guatemala to 

 Colombia: Cuba. 



Shrub, 2 to 3 meters high; leaves short-petiolate, obovate or oblong-obovate, 

 20 to 45 cm. long, acuminate, acute at base, densely short-pilose or glabrate 

 beneath; inflorescence cymose-paniculate, 7 to 20 cm. long; calyx shallowly 4 to 

 6-dentate; corolla tubular-funnelform, yellow or orange-red, 2 to 3.5 cm. long, 

 the lobes short; fruit baccate, purplish, depressed-globose, 5 to 6 mm. broad; 

 seeds minute, numerous. "Canelito" (Panama). 



18. PLOCANIOPHYLLON. T. S. Brandeg. Univ Calif. Publ. Bot. 6: 69. 1914. 



A single species is known. 

 1. Plocaniophyllon flavum T. S. Brandeg. Univ. Calif. Publ. Bot. 6: 69. 1914. 



Type from Finca Mexiquito, Chiapas. 



Slender glabrous shrub; leaves short-petiolate, elliptic to lance-oblong, 2.5 to 

 5 cm. long, acute to long-acuminate, acute at base, thin, conspicuously lineolate; 

 flowers yellow, in simple secund racemes; calyx 4-lobate; corolla salverform, the 

 tube 2.5 mm. long, the lobes 3 to 4 mm. long, narrowly oblong, acute; fruit. fleshy 

 (?), oblong-turbinate, 6 mm. long; seeds numerous, minute. 



19. SOMMERA Schlecht. Linnaea 9: 602. 1834. 

 Reference: Standley, N. Amer. Fl. 32: 143-145. 1921. 



Shrubs or small trees; leaves petiolate, thin, with numerous fine parallel nerves 

 between the veins; flowers white, in axillary pedunculate cymes, corymbs, or ra- 

 cemes; calyx 4 or 5-lobate, the lobes somewhat foliaceous; corolla funnelform or 

 subcampanulate, sericeous outside, the 4 or 5 lobes valvate; fruit baccate, 2-celled; 

 seeds numerous, minute. 



Leaves quite glabrous on the upper surface; branchlets glabrous or nearly so. 

 Calyx lobes lanceolate or lance-oblong, acuminate; cymes mostly 3-flowered. 



Leaves acute at base 1. S. arborescens. 



Calyx lobes oval or suborbicular, rounded at apex; inflorescence with more 

 than 3 flowers. 



Inflorescence racemose; leaves acute at base 2. S. chiapensis. 



Inflorescence cymose-corymbose; leaves obtuse to subcordate at base. 



3. S. subcordata. 



