220 ANNALS NEW YORK ACADEMY OF SCIENCES 



Type locality: Vera Cruz, Mexico. 



Distribution: Mexico and Central America. 



Specimens examined: Guatemala; San Jose, Sutton Hayes, 1860 (G). 



Ipomoea setosa pavoni (Hallier f.). comb. nov. 



Ipomcea setosa Griseb. Fl. Br. W. Ind. 469. 1861. 



Calonyction pavoni Hallier f . in Bull. Herb. Boiss. 5 : 1048. 1897. 



Similar to /. setosa, the stem clothed with weaker, hair-like setae; flowers cincin- 

 nial in short, axillary dichasia, long-peduncled; pedicels clavate; the outer sepals 

 with a few weak setae; corolla campanulate, white or pale violet-purple, the tube 

 conspicuouly dilated above the calyx, 5-7 cm. long. 



Type locality: Jamaica. 



Distribution: West Indies and tropical South America. 



74. Ipomcea tentaculifera Greenm. Proc. Am. Acad. 33: 482. 1898. 



Root, tuberous and perennial; leaf-blades ovate, 8-10 cm. long, entire, acumi- 

 nate; peduncles 7-12 cm. long, 1-flowered; the pedicel 4-6 cm. long; sepals oblong, 

 obtuse or rounded, the tentacular outgrowths 7-10 mm. long; corolla violet-purple, 

 7-8 cm. long. 



Type locality: Tomellin Canon, Oaxaca, Mexico. 



Distribution: Oaxaca, Mexico. 



Specimens examined: Pringle 6702, 1897 (type~G, Y, N). 



75. Ipomoea lozani Painter; House, Bot. Gaz. 43: 411. /. 3. 1907. 



Perennial from a tuberous root; leaf-blades narrowly ovate, deeply cordate- 

 sagittate, abruptly narrowed toward the apex, attenuate, 5-8 cm. long, the basal 

 lobes rounded, converging and overlapping; peduncles shorter than the petioles; 

 pedicel 3-4 cm. long; sepals puberulent, only slightly tentacular, oblong-lanceolate 

 acute; corolla purple, 6-7 cm. long, white below. 



Type locality: San Juan del Rio, Queretaro, Mexico. 



Distribution: Stony Hills, Queretaro and Tamaulipas. 



Specimens examined: Rose, Painter & Rose 95^2, 1905 (type — N, Y); 

 Pringle 10029, 1905. Tamaulipas; Between Victoria and Janmave Valley, 

 E. W. Nelson 4U0, 1898 (N). 



12. Bombycospermse. Stout, woody, perennial vines, with flowers in 

 dense, axillary, suberect or pendant racemes; seeds covered on all three 

 surfaces with long white, crinkled, wool-like hair. 



Bombycospermum Presl. Reliq. Haenk. 2: 137. 1837. 



One species. 76. /. homhycina. 



