Part 2, 1921] RUBIACEAE 107 



16. Bouvardia villosa Standley, sp. nov. 



Shrub, the branches stout, grayish, the branehlets stout, densely pilose with short soft 



spreading whitish hairs; stipules 4-5 mm. long; leaves opposite, the petioles stout, 3-5 mm. long, 



villous, the blades oval, broadly ovate, or elliptic-oblong, 1.7-2.5 cm. long, 0.6-1.5 cm. wide, 



rounded or obtuse at the base, obtuse to short-acuminate at the apex, green above, densely 



short-pilose or villosulous, paler beneath, densely whitish-villous; inflorescence terminal, 



cymose, dense, few-flowered, the flowers subsessile; hypanthium densely white-pilose, 2 mm. 



long; calyx-lobes lance-linear, attenuate, as long as the tube, or sometimes 6 mm. long; corolla 



white, densely white-villous outside, sparsely villous within near the base, the tube 1.7-2 cm. 



long, the lobes broadly ovate, 2.5-3 mm. long, obtuse, erect; anthers sessile, included. 



Type collected on Alturas de Matatl&n, Oaxaca, altitude 1800 meters, June, 1906, C. Conzatti 

 1486 (U. S. Nat. Herb. no. 764094). 



17. 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. 



18. Bouvardia heterophylla Standley, sp. nov. 



Shrub, the branches slender, terete, grayish, pruinose-puberulent when young, the in- 

 ternodes 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 long- or 

 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 pruinose- 

 puberulent; 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 triangular- 

 oblong, 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. 



19. 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. 



