STANDLEY TEEES AND SHEUBS OF MEXICO 1361 



Leaves petiolate; calyx tube not prolonged beyond the ovary. 

 Corolla more or less villous outside. 



Corolla densely villous outside 26. B. induta. 



Corolla villous only on the upper part of the tube 27. B. langlassei. 



Corolla glabrous outside or pruinose-puberulent. 



Leaves linear or lanceolate, 1.5 to 4 mm. wide; corolla pruinose-puberu- 

 lent 28. B. erecta. 



Leaves mostly ovate or broadly ovate, more than 5 mm. wide; corolla 

 glabrous. 



Corolla tube 3 to 3.5 cm. long 29. B. latifolia. 



Corolla tube 4 to 8.5 cm. long 30. B. longiflora. 



1. Bouvardia leiantha Benth. PI. Hartw. 85. 1841. 



Chiapas. Guatemala to Costa Rica; type collected near Tejar and Chimal- 

 tenango, Guatemala. 



Shrub; leaves nearly sessile, broadly ovate to ovate-oblong, 3 to 7 cm. long, 

 acute or acuminate, short-villous or whitish-tomentose beneath; corolla deep red, 

 the tube 12 to 16 mm. long. 



2. Bouvardia bouvardioides (Seem.) Standi. N. Amer. Fl. 32: 102. 1921. 

 Hedyotis bouvardioides Seem. Bot. Voy. Herald 296. pi. 64- 1856. 

 Housionia bouvardioides Benth. & Hook. Gen. PL 2: 60. 1873. 

 Mountains of Sinaloa, Durango, and Jalisco; type from the Sierra Madre. 

 Slender shrub, clambering to a height of 3 to 4.5 meters; leaves short-petiolate, 



ovate to lanceolate, 6 to 10 cm. long, long-acuminate; inflorescence many-flowered, 

 6 to 10 cm. broad; corolla red, the tube 10 to 15 mm. long. "Siguapatl" (Sinaloa). 



3. Bouvardia vimin^lis Schlecht. Linnaea 26: 120. 1853. 

 Puebla and Oaxaca. 



Shrub, 1 meter high or less; leaves subsessile, broadly ovate to lance-oblong, 

 3 to 5.5 cm. long, acuminate; inflorescence dense, many-flowered; corolla red, the 

 tube 15 to 17 mm. long. 



4. Bouvardia scabra Hook. & Arn. Bot. Beechey Voy. 427. 1841. 

 Tepic and Jalisco; type from Tepic. 



Plants chiefly or wholly herbaceous, 60 cm. high or less; leaves short-petiolate 

 or sessile, eUiptic-oval to ovate, 3.5 to 7.5 cm. long, rounded to acute at apex; 

 inflorescence dense, 5 to 14 cm. broad; corolla red, the tube 17 to 21 mm. long. 

 "Doncellita" (Loesener) . 



5. Bouvardia obovata H. B. K. Nov. Gen. & Sp. 3: 385. 1818. 



Morelos and Mexico; type collected between Chapultepec and Texcoco, 

 Mexico. 



Plants herbaceous, 1 meter high or less, glabrous or nearly so; leaves short- 

 petiolate, 5.5 to 12.5 cm. long, obtuse or acute; inflorescence many-flowered, 

 dense; corolla red, the tube 25 to 33 mm. long. 



6. Bouvardia glaberrima Engelm. in Wisliz. Mem. North. Mex. 106. 1849. 

 Bouvardia ovata A. Gray, PI. Wright. 2: 67. 1853. 



Sonora, Chihuahua, and Durango; type from Cosihuiriachic, Chihuahua. 

 Southern Arizona and New Mexico. 



Shrub, 1 meter high or less, or often chiefly herbaceous; leaves short-petiolate, 

 ovate or lanceolate, 2.5 to 10 cm. long, acute or acuminate, scaberulous or 

 glabrous; cymes usually few-flowered; corolla red, the tube 20 to 32 mm. long. 



7. Bouvardia scabrida Mart. & Gal. Bull. Acad. Brux. 11': 237. 1844. 

 Bouvardia hypoleuca Benth. PL Hartw. 288. 1848. 



Jalisco to San Luis Potosi, Veracruz, and Oaxaca; type from ravine of Yavezia, 

 Oaxaca. 



