238 ANNALS NEW YORK ACADEMY OF SCIENCES 



119. Ipomcea madrensis S. Wats. Proc. Am. Acad. 23: 281. 1888. 



Peduncles 1-flowered, 1-2 cm. long, scabrous; sepals ovate, acute or obtuse 8- 

 10 mm. long, muricate; corolla 3-4 cm. long. 



Type locality: Base of the Sierra Madre, Chihuahua, Mexico. 



Distribution: Pine plains, northern Mexico. 



Specimens examined: Pringle 1338, 1887 (type — G, C, N). 



120. Ipomcea egregia House, Torreya 6: 124. 1906. 



Ipomcea cuneifolia A. Gray, Proc. Am. Acad. 19: 90. 1883. — Syn. Fl. N. Am. 2: 

 Suppl. 434. 1886. Not /. cuneifolia Meissn. 1869. 



Type locality: Tanner's Canon, Ft. Huachuca, southern Arizona. 

 Distribution: Mountains of southern Arizona. 

 Specimens examined: Lemmon 2887, 1882 (type — G, N). 



16. Microsepalae. Slender, annual or perennial, twining vines, with 

 herbaceous stems: sepals small, less than 5 mm. long, equal or nearly so, 

 often acute: corollas small, narrowly funnelform, not ventricose at the base. 



Corolla yellow. 



Leaf-blades sessile or very short petioled. 121. /. amplexicaulis . 



Leaf-blades relatively long-petioled. 122. /. microsepala. 



Corolla white or purple. 



Corolla white, 10-15 mm. long; leaves pubescent above. 123. I. filipes. 



Corolla-limb blue, about 20 mm. long; leaves glabrous 



above. 124. /. turckheimii. 



120. Ipomcea amplexicaulis Femald, Bot. Gaz. 20: 535. 1895. 



Glabrous or sparingly hispid; leaf-blades ovate, deeply cordate, entire, clasping, 

 1.5-4 cm. long; peduncles 3-6 cm. long, 2- to 9-flowered; sepals 2-3 mm. long, 

 lanceolate, acute; corolla 15-20 mm. long. 



Type locality: Mountains near Zopelote, Tepic, Mexico. 



Distribution: Mountains of western Mexico. 



Specimens examined: Tepic; Lamb 576, 1895 (type — G, N, Y) ; Tuxtla, 

 Caec. et Ed. Seler 1900, 1896 (G). Durango; Chacala, Goldman 339, 1899 

 (N). Between Valle Banderas and Colomo, Tepic, E. W. Nehon 4-1 54, 

 1897 (N). 



122, Ipomcea microsepala Benth. Bot. Voy. Sulph. 136. 1844. — Walp. 

 Rep. 6: 533. 1847. 



Ipomcea nelsoni Rose, Contr. U. S. Nat. Herb. 1: 343. 1895. 



