106 House : North American Convolvulaceae 



Type locality : St. Domingo. 

 Distribution : St. Domingo. 



Specimens examined: Wj'ight, Parry, & Brnmniel jy8, 1871 

 (in Nat. Herb.). 



18. Exogonium viridiflorum (Urb.) 



Ipoinoea virdiflora Urb. Symb. Ant. 3 : 348. 1902. 



Stems dark-red, striate, minutely pilose above : leaf-blades 

 pedately divided, middle lobe 3-4 cm. long, 1.5-2.5 cm. broad; 

 petioles 2-3 mm. long: peduncles 1-2 cm. long, i-fevv -flowered : 

 sepals obovate orbicular, 6 mm. long, the inner ones emarginate. 



Type locality : Hayti. 

 Distribution : Hayti. 



19. Exogonium leucaneurum (Urb.) 

 Ipomoea Icuconejira Urb. Symb. Ant. 3 : 350. 1902. 



Prostrate or trailing : stems woody below, striate : leaf-blades 

 digitately 7- (rarely 5- or 6-) divided segments 5-30 mm. long, 

 attenuate below into petiolules 3 mm. long : peduncles 2—'] mm, 

 long, i-io-flowered ; pedicels 7-12 mm. long: sepals green or 

 tinged with red, unequal, outer 3.5 mm. long, inner narrowly ovate 

 or obovate, 5 mm. long, rounded or emarginate : corolla scarlet, 

 35-45 mm. long, slightly inflated in the middle, the limb about 

 25 mm. broad: capsules oblong, 15 mm. high; seeds with a yel- 

 lowish white coma of long reflexed hairs. 



Type locality : Hayti. 



Distribution : Hayti. No specimens seen. 



20. Exogonium pedatum Choisy, Conv. Rar. 130. 1837. — In 



DC. Prodr. 9: 347. 1845 



Stems woody below, terete : leaf-blades pedate, lateral lobes 

 2-parted ; segments petiolulate, narrowly lanceolate, obtuse, 1.5-3 

 cm. long, 4-7 mm. wide or less : peduncles 2-5 cm. long, 2-6- 

 flowered: outer sepals slightly shorter than the inner, which are 

 about 4 mm. long, oval : corolla red, 3.5-4.5 cm. long. 



Type locality : St. Domingo. 



Distribution : Hayti and St. Domingo. 



Species inquirendae 



Ipomoea rubrocincta Urb. /. c. 347. Doubtfully distinct from 

 E. pedatum, from the description, although no specimens have been 

 seen. 



