196 
ANNALS NEW YORK ACADEMY OF SCIENCES 
Ipomoea lindheimeri subintegra var. nov. 
Leaf-blades entire or angled, shallowly cordate, acuminate, 1-4 cm. long; sepals 
ovate-lanceolate, 16-18 mm. long, 4-8 mm. broad; corolla 6-7 cm. long. 
Arizona: Near Ft. Huachuca, Lemmon 2835, 1882 (type—G). 
29. Ipomoea heterophylla Orteg. Hort. Matr. Dec. 1:9. 1800.— Willd. 
Enum. Hort. Berol. 1: 207. 1809. 1 
Ipomoea ortegce Poir. Encyc. Suppl. 4: 633. 1816. 
Ipomoea willdenowii Roem. & Schult. Syst. 4: 211. 1819. 
Convolvulus heterophyllus Spreng. Syst. 1: 592. 1825. 
Batatas heterophylla G. Don, Gen. Syst. 4: 261. 1838. 
Batatas willdenowii G. Don, 1. c. 
Convolvulus willdenowii Steud. Nom. ed. 2. 1: 412. 1841. 
Pharbitis heterophylla Choisy, in DC. Prodr. 9: 344. 1845. 
Foliage appressed sericeous-pubescent; leaf-blades deeply 3- to 5-lobed; sepals 
with ovate or suborbicular densely hirsute bases and long attenuate tips, 20-24 mm. 
long, 10-15 mm. wide, enlarged in fruit; corolla 5-6 cm. long, the tube fully 10 mm. 
thick at the top of the calyx. 
Type locality : Mexico. 
Distribution : Dry places, northern Mexico to western Texas. 
Illustrations: Jacq. Fragm. 37. pi. J^2. /. L 
Specimens examined : San Luis Potosi , Schaffner 426 & 619 (Y). Chi¬ 
huahua; E. W. Nelson 6159 & 6284, 1899 (N). 
Ipomoea heterophylla semula var. nov. 
Sepals ovate-lanceolate, 20-25 mm. long, 6-8 mm. broad; corolla large, the tube 
4 mm. thick at the base, 6-7 mm. thick above the calyx, subsalverform, the limb 
6-7 cm. broad. 
Chihuahua: Hills near Guerrero, Pringle 1339, 1887 (type — G, Y, N). 
Ipomoea heterophylla subcomosa var. nov. 
Stems and foliage very densely appressed sericeous-pubescent; peduncles 1-2 
cm. long; outer sepals 15-18 mm. long at flowering time, 8-10 mm. broad at the 
truncate base, becoming twice as long and a half broader in fruit, the tips attenuate, 
tinged with red; corolla 6-7 cm. long, the tube only 2-3 mm. thick above the calyx, 
the limb 5 cm. broad. 
Durango, Palmer 590, 1896 (type — N, G, Y). 
1 Ipomoea heterophylla R. Br. 1810. = Ipomoea polymorpha Roem. & Schult. 1819. 
