Part 2, 1921] RUBIACEAE 127 



1. Coutarea octomera Hemsl. Biol. Centr. Am. Bot. 4: 



101. 1887. 



Coutarea acamptodada Rob. & Millsp.; Millsp. Hot. Jahrb. 36: Beibl. 80: 28. 1905. 



Shrub, the branches stout, grayish, glabrous, the leaves densely crowded at the ends of 



short stout branchlets; stipules short, broadly deltoid, obtuse; petioles slender, 2-8 mm. long, 



puberulent; leaf-blades oval, ovate-oval, rhombic-ovate, or oval-oblong, 1.5-5 cm. long, 1—3.5 



cm. wide, obtuse or cuneate at the base, rounded or very obtuse at the apex, concolorous, 



glabrous, or sparsely short-pilose beneath along the veins, the venation impressed above, 



prominulous beneath, the lateral veins 4 or fewer, usually obscure, the margin subrevolute; 



flowers few, axillary, solitary, the pedicels stout, ebracteolate, 5-8 mm. long; hypanthium 



glabrous or obscurely puberulent, 5-6 mm. long; calyx-lobes 8 or 10, linear, acute, 5-8 mm. 



long; corolla greenish-yellow, 2.5-5 cm. long, symmetric, glabrous, 1.5-4 cm. wide in the throat, 



the tube obconic, costate, the 8 lobes triangular or ovate, obtuse or acutish, about one fourth as 



long as the tube; stamens usually 8, slightly shorter than the corolla, the anthers 1-1.5 cm. 



long; capsule (immature) subterete, 1.5 cm. long, 8 mm. broad, finely and obtusely tuberculate. 



Type locality: Cozumel Island, Yucatan. 

 Distribution: Yucatan. 



2. Coutarea latiflora Moc. & Sessd; DC. Prodr. 4: 350. 



1830. 



Shrub or small tree, sometimes 5 meters high, the branchlets grayish, short-pilose when 

 young or sometimes glabrous, the internodes short or elongate; stipules deltoid or narrowly 

 triangular, 2-4 mm. long, acute or acuminate, usually gland-tipped; petioles slender, 0.4-2 cm. 

 long; leaf-blades ovate, oblong, oval, or ovate-oval, 3.5-12 cm. long, 1.5-6 cm. wide, rounded 

 to acute at the base, usually abruptly short-decurrent, obtuse, acute, or abruptly short-acumi- 

 nate at the apex, bright-green, concolorous, usually short-pilose above, the venation plane or 

 subimpressed, whitish-tomentose beneath when young or pilose, or sometimes glabrous ex- 

 cept along the veins, these prominulous, the lateral veins arcuate; flowers axillary, solitary, 

 the pedicels ebracteolate, 0.5-1.5 cm. long; hypanthium densely or sparsely tomentose or 

 glabrous, about 5 mm. long; calyx-lobes 6, linear or subulate, 6-10 mm. long; corolla white, 

 5-7 cm. long, symmetric, glabrous or pilose outside, the tube obconic, 3-4.5 cm. wide in the 

 throat, angulate, the 6 lobes plicate-imbricate, deltoid or ovate, obtuse, half as long as the 

 tube or shorter; stamens 6, slightly shorter than the corolla, the anthers 1.8-2.5 cm. long; 

 capsule oval, slightly compressed, about 2 cm. long, brown, obtusely short-tuberculate, 6- 

 costate; seeds oval or orbicular, 5-7 mm. long, brown. 



Type locality: Mexico. 



Distribution: Puebla to Michoaean and Guatemala; also in southwestern Chihuahua. 



Illustration: Moc. & Sesse, Calq. Dess. pi. 458. 



3. Coutarea pterosperma (S. Wats.) Standley. 



Portlandia pterosperma S. Wats. Proc. Am. Acad. 24: 52. 1889. 



Shrub, 1-3 meters high, the branches grayish or brownish, coarsely lenticellate, glabrous, 

 the internodes short or elongate; stipules 2-4 mm. long, deltoid, acute or glandular-mucronate, 

 short-pilose; petioles slender, 0.4-2 cm. long, short-pilose or glabrate; leaf-blades ovate, oval, 

 rounded-oval, ovate-oblong, or ovate-oval, 4-10 cm. long, 2-6 cm. wide, rounded to acutish 

 at the base, often short-decurrent, obtuse or acute at the apex or often abruptly short-acumi- 

 nate, concolorous, glabrous or sparsely short-pilose above, the venation plane, short-pilose 

 beneath or glabrous, often with tufts of white hairs in the axils of the veins, the lateral veins 

 prominent or prominulous, arcuate, the margin plane; flowers axillary, solitary, the pedicels 

 1-2.5 cm. long, bracteolate at or below the middle, the bractlets small, subulate; hypanthium 

 glabrous or pilose, 5-7 mm. long; calyx-lobes 6, broadly linear or subulate, 1-2 cm. long; 

 corolla white, green when dry, 6-S cm. long, the tube narrowly obconic, angulate, about 3 cm. 

 broad in the throat, the 6 lobes plicate-imbricate, rounded-ovate or semiorbicular, about one 

 fourth as long as the tube; stamens 6, equaling or shorter than the corolla, the anthers 2-2.5 



