HOUSE, THE GENUS IPOMCEA 259 



171. Ipomcea umbraticola sp. nov. 



Perennial; stems furrowed, twisted below, glabrous; leaf-blades ovate, entire 

 or usually 3-lobed, cordate, 6-10 cm. long, nearly as broad, with some minute his- 

 pidulous pubescence above, glabrous or nearly so beneath, middle lobe oblong, acu- 

 minate, lateral lobes spreading, acute, subtriangular; petioles filiform, shorter than 

 the blades; peduncles stout, longer than the leaves, angled, 10-15 cm. long, cymosely 

 many-flowered; pedicels 1-2 cm. long; sepals glabrous, fiavescent, subequal, 4.5-5 

 mm. long, suborbicular, imbricated, retuse and mucronulate; corolla funnelform, 

 4 cm. long; capsules ovate, obtuse, 7-8 mm. long, 2-celled; seeds glabrous. 



Costa Rica: Nicoya, Tonduz 13677 (ex Herb. H. Pittier), 1900 (type — 

 Y). 



172. Ipomcea violacea L. Sp. PI. 161. 1753. 



Ipomcea foliis cordatis integerrimis, florihus confertis, corallis indivisis, Sauv. 

 Monsp. 114. 



Quamoclit foliis amplissimis cordiformibus, Plum. Sp. 3; Am. pi. 93. /. 1. Sloan. 

 Jam. 55. Hist. 1: 155. pl.98.f.l. 



Convolvulus indicus Mill. Diet. No. 5. 1768. 



Ipomcea tricolor Cay. Ic.Vl.'Ra.v.Z: 5. pi. 208. 1794. 



Convolvulus violaceus Spreng. Syst. 1: 399. 1825. 



Convolvulus venustus Spreng. 1. c. 



Ipomcea rubroccerulea Hook. Bot. Mag. pi. 3297. 1834. 



Pharbitis violacea Bojer, Hort. Maurit. 227. 1837.— Choisy in DC. Prodr. 9: 344. 



1845. 

 Tereietra violacea Raf. Fl. Tellur. 4: 124. 1838. 

 /poOTQsa 7iooA;enG. Don, Gen. Syst. 4: 274. 1838. 

 Pharbitis rubrocceruleus Planch. Fl. des Serres 9: 281. pi. 966. 1854. 

 Convolvulus rubrocceruleus D. Dietr. Syn. PI. 1: 670. 1839. 

 Ipomcea puncticulata Benth. Bot. Voy. Sulph. 136. 1845. — S. Wats, in Proc. Am. 



Acad. 22: 440. 1887. 



Peduncles hollow and wand-like, longer than the petioles; leaf-blades ovate, 

 cordate, often early deciduous; pedicels 2-3 cm. long; sepals 5-6 mm. long, green- 

 ish with white, scarious margins; corolla 5-6 cm. long, violet-blue or purple with a 

 white tube. 



Type locality: Habitat in America meridionali. 



Distribution: Western Mexico to Central America, Antilles and 

 tropical South America. 



Specimens examined: Guanajuato, A. Duges 4, 23, 1904 (G). Oax- 

 aca; E. W. Nelson 1311, 1894 (N, G); L. C. Smith 300, 1894 (G); Mrs. 

 D. H. Sheldon, 1893 (G); Morelos; Cuemavaca, Borgeau 1405, 1865 (G). 

 Costa Rica; San Jose, Tonduz 7181, 1892 (G). Jalisco; Chapala, Palmer 

 702, 1886 (N, C); Puebla; Near Tehuacan, Rose & Rose llUl, 1906 

 (N, Y); Yucatan; Gaumer 329 (Y). 



