Bouvardia multiflora (Cav.) Schult. & Schult. fil.

Bouvardia heterophylla Standley, sp. nov
Shrub, the branches slender, terete, grayish, pruinose-puberulent when young, the internodes short or elongate; stipules short, long-cuspidate, sometimes laciniate; leaves opposite, the petioles slender, 2-4 mm. long, the blades suborbicular, broadly ovate, or lance-ovate, 2-4 cm. long, 0.8-3 cm. wide, obtuse to truncate at the base, usually abruptly short-decurrent, the narrower leaves attenuate or acuminate at the apex, the broader ones abruptly longor short-acuminate, with an acumen 3-8 mm. long, very thin, bright-green above, glabrous, paler beneath, glabrous or sparsely puberulent along the veins, the lateral veins evident, arcuate-ascending; flowers in terminal, sessile or short-pedunculate, 3-5-flowered cymes, the pedicels slender, 2-8 mm. long; hypanthium hemispheric, 1.5 mm. long, obscurely pruinosepuberulent; calyx-lobes lanceolate or linear, 2.5-5 mm. long, glabrous; corolla white, glabrous outside, the tube 18-21 mm. long, 2-3 mm. thick above, glabrous within, the lobes triangularoblong, 4-5 mm. long, obtuse or acutish, ascending, glabrous within; filaments elongate, the anthers exserted, about 2 mm. long; style short-exserted.
Type collected at Santa Rosa, Guatemala, altitude 1000 meters, May, 1892, Heyde b° Lux 3137 (U. S. Nat. Herb. no. 398167).
Distribution: Jalisco to Guatemala.

Bouvardia versicolor Ker, Bot. Reg. 3: pi. 245. 1817
? Bouvardia triflora hirsnta Mart. & Gal. Bull. Acad. Brux. II 1 : 236. 1844. Bouvardia bicolor Kunze, Linnaea 20: 24. 1847.
Shrub, much branched, the branches usually slender, terete, grayish, densely puberulent or hirsutulous when young, the internodes short or elongate; stipule-sheath short, often pluriaristate; leaves opposite, the petioles slender, 2-3 mm. long, the blades mostly ovate, sometimes lanceolate or broadly ovate, rounded or very obtuse at the base, acute to attenuate at the apex, thin, bright-green above, scaberulous, beneath slightly paler, hirsutulous along the veins, elsewhere scaberulous, the lateral veins evident, arcuate-ascending at an acute angle; flowers mostly in 3-5-flowered terminal cymes, these sessile or short-pedunculate, the pedicels slender, 2-6 mm. long, densely puberulent or hirsutulous, the flowers sometimes pendulous; bracts often large and leaf-like; hypanthium subglobose, 1.5-2 mm. long, densely puberulent or short-hirsutulous ; calyx-lobes lance-linear, 2-4.5 mm. long, scaberulous; corolla red, or sometimes yellow at first, glabrous outside, the tube 2.2-3.4 cm. long, tapering from top to base, 3.5-4 mm. thick above, sparsely villous within, the lobes ovate-oblong or triangularoblong, 3-5 mm. long, obtuse or acutish, glabrous within, ascending; anthers nearly sessile
or on elongate filaments, included or exserted, 1.5-2.5 mm. long; style exserted.
Type locality: Described from cultivated plants of Mexican origin. Distribution: Guanajuato to Oaxaca.

Bouvardia macrantha Standley, sp. nov
Shrub, much branched, the branches stout or slender, terete or subangulate, grayish,
densely puberulent when young, the internodes very short ; stipule-sheath very short, cuspidate
or pluriaristate; leaves opposite, the petioles slender, 1-3 mm. long, puberulent or villosulous,
the blades ovate or broadly ovate, 1-2.5 cm. long, 0.3-1.2 cm. wide, rounded to acutish at the
base, often short-decurrent, subabruptly acuminate to obtuse at the apex, thin, green above,
scaberulous or villosulous, paler beneath, sparsely scaberulous or villosulous, the lateral veins
evident beneath, ascending at a very acute angle; flowers in terminal, 3-few-flowered, sessile
or short-pedunculate cymes, the pedicels 5 mm. long or shorter; hypanthium 1.5-2 mm. long,
puberulent or hirsutulous; calyx-lobes narrowly triangular, lanceolate, or linear, 2-6 mm. long,
scaberulous; corolla white, glabrous outside, the tube 2.4-3.3 cm. long, 2.5-3 mm. thick above,
sparsely villous within, the lobes triangular-oblong or lance-oblong, ascending, 4-7 mm. long,
acute or acutish, glabrous within; anthers subsessile, included, and 2 mm. long, or on long
filaments, exserted, and about 1 mm. long; style included or exserted; capsule subglobose,
almost wholly inferior, 4-6 mm. in diameter.
Type collected at Tlalcuilotepec, Puebla, altitude 2100 to 2400 meters, July, 1909, C. A. Pur pus 3981 (U. S. Nat. Herb. no. 841341). Distribution: Jalisco to Oaxaca.

Bouvardia multiflora (Cav.) Schultes, in R. & S. Syst Veg. Mant. 3: 118. 1827.
Aeginetia multiflora Cav. Anal. Ci. Nat. 3: 131. 1801.
Bouvardia triflora H. B. K. Nov. Gen. & Sp. 3: 386. 1820.
Ceslrum s per macocei folium Willd.; R. & S. Syst. Veg. 4: 808, as synonym. 1819.
Bouvardia Cavanillesii DC. Prodr. 4: 366. 1830.
Anotis longiflora Benth. PI. Hartw. 23. 1839. ? Bouvardia Schiedeana Schlecht. Linnaea 26: 123. 1854.
Houstonia iriflora A. Gray, Proc. Am. Acad. 4: 314. 1860.
Bouvardia gracilis A. Gray, Proc. Am. Acad. 22: 306. 1887.
Bouvardia versicolor graciliflora A. Gray, in S. Wats. Proc. Am. Acad. 22: 416. 1887.
Shrub, 1-1.5 meters high, the branches stout or slender, terete or subangulate, brown or grayish, rimose, finely puberulent when young; stipule-sheath short, long-cuspidate, dentate or laciniate; leaves opposite, the petioles slender, 1-6 mm. long, puberulent, the blades lanceolate, ovate, or broadly ovate, 1.5-5 cm. long, 0.4-1.6 cm. wide, very obtuse to acuminate at the base, short-decurrent, acute to attenuate at the apex or rarely obtuse, thin, subconcolorous, finely puberulent or scaberulous, sometimes glabrate in age; flowers in terminal and axillary, 3-5fiowered, sessile or short-pedunculate cymes, the pedicels 3 mm. long or shorter; hypanthium densely whitish-hirsutulous; calyx-lobes oblong-lanceolate or lance-subulate, 2-10 mm. long, hirtellous; corolla white or greenish-white, glabrous outside, the tube slender, 10-15 mm. long, 1.5-2 mm. thick in the throat, sparsely villous within near the base, the lobes oblong, spreading, 4-5 mm. long, acute or acutish, glabrous within; filaments usually elongate, the anthers exserted, 1-1.5 mm. long; capsule didymous-globose, 4-6 mm. broad, almost wholly inferior, glabrous, the pedicel usually recurved; seeds orbicular, 2-3 mm. broad, dark-brown, broadly winged.
Type locality: Mexico.
Distribution: Cliffs and rocky hillsides. Chihuahua to Queretaro and Guerrero.