104 NORTH AMERICAN FLORA [Volume 32 



minutely papillose-puberulent within; anthers nearly sessile, included, 2-2.5 mm. long; style 

 included; capsule subglobose, 5-7 mm. broad, bisulcate; seeds dark-brown, broadly winged. 



Type locality: Rocky slopes of the ravine of Yavezia, eastern cordillera of Oaxaca, altitude 

 1800 to 2100 meters. 



Distribution: Dry rocky hillsides, San Luis Potosi to Veracruz and Oaxaca. 



8. Bouvardia tenuifolia Standley, sp. nov. 



Stems erect, herbaceous, or suffrutescent at the base, usually simple, slender, terete, 

 glabrous or rarely hirtellous, the internodes elongate; stipule-sheath 3 mm. long or shorter, the 

 lobes acute or short-cuspidate; leaves ternate, sessile or subsessile, linear, 3-9 cm. long, 0.6- 

 3.5 mm. wide, long-attenuate at the apex, thick, often rigid, sometimes falcate, pale-green, 

 glabrous or rarely soft-hirtellous, the costa prominent, the lateral veins obsolete, the margin 

 revolute; inflorescence terminal, cymose-corymbose, dense, few- or many-flowered, about 

 5 cm. broad, the pedicels slender, 1-3 mm. long; hypanthium subglobose, 1-1.5 mm. long, 

 scaberulous; calyx-lobes linear or subulate, 1-2.5 mm. long, hirsutulous or scaberulous; corolla 

 red, scabro-puberulent outside, the tube 2-2.5 cm. long, 2-3 mm. thick above, with a villous 

 ring within near the base, the lobes ovate-oval, 3-3.5 mm. long, obtuse or acutish, erect or 

 ascending, papillose-puberulent within; anthers subsessile, included, 2.5 mm. long; style 

 usually exserted. 



Type collected on grassy hillsides near Guadalajara, Jalisco, October, 1889, C. G. Pr ingle 2Z92 

 (U. S. Nat. Herb. no. 49966). 



Distribution: Jalisco, Tepic, and Sinaloa. 



9. Bouvardia ternifolia (Cav.) Schlecht. Unnaea 26: 98. 



1854. 



Ixora ternifolia Cav. Ic. 4: 3. 1797. 



Ixora americana Jacq. Hort. Schoenb. 3: 4. 1798. 



Honstonia coccinea Andr. Bot. Repos. pi. 106. 1800. 



Bouvardia triphvlla Salisb. Parad. Lond. pi. 88. 1808. 



Bouvardia linearis H. B. K. Nov. Gen. & Sp. 3: 383. 1819. 



Bouvardia angustifolia H. B. K. Nov. Gen. & Sp. 3: 384. 1819. 



Bouvardia hirtella H. B. K. Nov. Gen. & Sp. 3: 384. 1819. 



Bouvardia Jacquini H. B. K. Nov. Gen. & Sp. 3: 385. 1820. 



Bouvardia coccinea Link, Enum. 1: 139. 1821. 



Bouvardia quaternifolia DC. Prodr. 4: 365. 1830. 



Carphalea? pubifolia Moc. & Sesse; DC. Prodr. 4: 365, as synonym. 1830. 



Hedyotis mexicana Moc. & Sesse; DC. Prodr. 4: 365, as synonym. 1830 



Bouvardia Jacquini exogyna DC. Prodr. 4: 365. 1830. 



Bouvardia Jacquini ovata DC. Prodr. 4: 365. 1830. 



Bouvardia sUendens Graham, Bot. Mag. pi. 3781. 1840. 



Bouvardia tolucana H. & A. Bot. Beech. Voy. 427. 1840. 



Aeginelia hyssopifolia Willd.; Schlecht. Linnaea 26: 60, as synonym. 1854. 



Bouvardia tenuiflora Schlecht. Linnaea 26: 97. 1854. 



Bouvardia microphylla Schlecht. Linnaea 26: 112. 1854. 



Bouvardia viperalis Schlecht. Linnaea 26: 114. 1854. 



Bouvardia Houtteana Schlecht.; Planch. Fl. Serres 10: 149. 1855. 



Bouvardia triphylla angustifolia A. Gray, Syn. Fl. N. Am. I 2 : 24. 1884. 



Hedyotis fruticosa Sesse & Moc. Fl. Mex. 22. 1893. 



Bouvardia ternifolia angustifolia B. L. Robinson, Proc. Am. Acad. 45: 405. 1910. 



Erect shrub, often much branched, or the stems sometimes herbaceous except at the base 



and simple, stout, terete or subangulate, hirtellous or puberulent when young, the internodes 



short or elongate; stipule-sheath short, long-cuspidate or pluriaristate ; leaves 3-4-verticillate, 



or partly opposite, the uppermost often sessile, the lowest on stout petioles 2-3 mm. long, the 



blades ovate, lanceolate, lance-elliptic, linear-lanceolate, or almost linear, 1.5-6.5 cm. long, 



0.2-2 cm. wide, acute or obtuse at the base, often abruptly decurrent, acute to long-attenuate 



at the apex, usually thin, green above, scabrous or scaberulous, sometimes glabrate, green or 



slightly paler beneath, hirtellous or scabrous or sometimes glabrate in age, the lateral veins 



few (2-4), conspicuous or often obsolete, the margin plane or revolute; inflorescence terminal, 



cymose or cymose-corymbose, often subcapitate, usually few-flowered, the pedicels 1-5 mm. 



long; hypanthium scabrous or puberulent; calyx-lobes triangular-lanceolate or subulate, 2-4 



mm. long; corolla red, puberulent to short-villous outside with coarse thick hairs, the tube 



1.5-3.2 cm. long, 2-3 mm. thick above, tapering from top to base, with a short, densely white- 



villous ring within near the base, the lobes ovate-oval or ovate-oblong, 2-3 mm. long, obtuse or 



