196 ANNALS NEW YORK ACADEMY OF SCIENCES 



Ipomcea 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. Ipomcea heterophyUa Orteg. Hort. Matr. Dec. 1 : 9. 1800.— Willd. 

 Enum. Hort. Berol. 1: 207. 1809.^ 



Ipomoea ortegoe Poir. Encyc. Suppl. 4: 633. 1816. 

 Ipomcea willdenowii Roem. & Schult. Syst. 4: 211. 1819. 

 Convolvulus heterophyllus Sprang. 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. 

 PharhUis heterophylla Choisy/m'DC.'ProAr. 2: 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. p/. 42. f. 4. 



Specimens examined: San Luis Potosi, Schaffner 426 & 619 (Y). Chi- 

 huahua; E. W. Nelson 6159 & 6284, 1899 (N). 



IpomcBa 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 calj'x, subsalverform, the limb 

 6-7 cm. broad. 



Chihuahua: Hills near Guerrero, Pmngle 1339, 1887 (type — G, Y, N). 



Ipomcea 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 (t^-pe — N, G, Y). 



1 Ipomcea heterophylla R. Br. 1810. = Ipomoea polymorpha Roem. & Schult. 1819. 



