190 
ANNALS NEW YORK ACADEMY OF SCIENCES 
14. Ipomcea murucoides Roem. & Schult. Syst. 4: 248. 1819. 
Convolvulus macranthus H. B. K. Nov. Gen. & Sp. 3: 95. 1818. 
Ipomcea macrantha G. Don, Gen. Syst. 4: 267. 1838. Not I. macrantha Roem. 
& Schult. 1819. 
Convolvulus strictus Willd.; Steud. Nom. ed. 2, 1: 412. 1841. 
A large tree, the inflorescence and young parts densely tomentose or woolly; 
leaf-blades oblong-lanceolate, 7-12 cm. long, rounded or obtuse at the base, long- 
acuminate, tomentose beneath; calyx woolly without and pubescent within; the 
unequal sepals 18-28 mm. long; corolla 7-8 cm. long, woolly-pubescent without; 
capsules 25 mm. long; seeds with a long coma of white hairs on the dorsal angles and 
apex. 
Type locality: Near Guanajuato and Santa Rosa, Queretaro, Mexico. 
Distribution: Hillsides, southern Mexico and Central America. 
Specimens examined from Oaxaca, Morelos, Michoacan, Pueblo, Quere¬ 
taro, Valley of Mexico, Guanajuato and Guatemala. 
15. Ipomcea arborescens (Humb. & Bonpl.) G. Don, Gen. Syst. 4: 
267. 1838. 
Convolvulus arborescens Humb. & Bonpl.; Willd. Enum. 1: 204. 1809.— H. B. K. 
Nov. Gen. & Sp. 3: 94. 1818. 
C. arboreus Balb.; Steud. Nom. ed. 2. 1: 407. 1841. 
Argyreia oblonga Benth. Bot. Sulph. 133. 1844. 
Ipomcea murucoides var. glabrata Rose, Contr. Nat. Herb. 1: 107. 1891. 
Convolvulus Quanhtzahuath Sesse & Moc., FI. Nov. Hisp. in La Naturaleza II. 1: 23. 
1887. FI. Mex. 1. c. II. 2: append. 36, 37. 1893. 
Leaf-blades finely velvety-pubescent above, paler, densely pubescent and prom¬ 
inently reticulate-veined beneath, ovate, cordate; sepals oval obtuse, 6-10 mm. 
long, tomentulose-pubescent within and without; corolla white, about 5 cm. long; 
capsules 2 cm. high; seeds black with a long reflexed white coma of hairs on the 
dorsal angles. 
Type locality: America meridionali. 
Distribution: Dry hilly regions of western and southern Mexico. 
Illustrations: Gard. & For. 7: p. 364. 1894. 
Specimens examined from Sonora, Sinaloa and Morelos. 
16. Ipomcea cuemavacensis House, Bot. Gaz. 43 : 410. 1907. 
Convolvulus arboreus Moc. & Sesse, FI. Nov. Hisp. in La Naturaleza II. 1: 23. 1887. 
— FI. Mex, 1. c. 2: append. 38. 1893. Not C. arboreus Balb. 1841. 
Closely related to the preceding, but the leaf-blades oblong, rounded at the base, 
long-acuminate, 10-15 cm. long and 5-6.5 cm. wide. 
