HOUSE, THE GENUS IPOMOEA 
215 
white tube constricted just above the calyx, limb 5-lobed, 4-6 cm. broad; capsules 
globose, 1 cm. or less thick, 2-celled, 4-seeded; seeds glabrous. 
Mexico: Oaxaca; Las Sedas to La Carbonera, Conzatti & Gonzalez 
261, 1897 (type—G); La Carbonera, 7200 ft. alt, 80J+, 1895 (G). 
63. Ipomoea eximia House, Muhlenbergia 3: 44. pi. 2 f. d. 1907. 
Similar to the preceding species, nearly or quite glabrous; leaf-blades deltoid- 
reniform or triangular-ovate, 2-2.5 cm. broad, cordate, obtuse, the margin angled 
or toothed, sparingly hirsute above, finely so on the veins beneath and on the margin; 
peduncles 2 cm. long or less, 1- to 3-flowered; sepals very unequal, outer ones and 
the pedicels muricate, oblong-lanceolate, blunt, 5-8 mm. long; corolla very slenderly 
funnelform, deep rose-purple, 4-5 cm. long, the abruptly expanded limb subentire, 
3.5-4 cm. broad. 
Type locality: Orizaba, Mexico. 
Distribution: Vicinity of Orizaba. 
Specimens examined: Orizaba Muller, 1855 (type — C, N). 
10. Bactylophyllse. Stout, twining, perennial vines, the stems woody 
below; leaf-blades divided into 3 to 9, sessile or stalked leaflets; flowers 
solitary or usually in irregular corymbose clusters; sepals coriaceous or 
leathery, obtuse, rarely acute; corolla tube constricted within or just above 
the calyx; capsules thick-walled, ovoid, acute, usually apiculate, 2-celled, 
4-seeded; the ovary supported by a prominent culpiform disk. 
Coiladena Raf. FI. Tellur. 4: 12. 1838. 
Modesta Raf. 1. c. 75. (in part). 
Leaflets three; sepals unequal. 64. 
Corolla white; sepals 10-15 mm. long. 
Corolla red; sepals 8-10 mm. long. 65. 
Leaflets five to seven. 
Sepals 6-7 mm. long. 
Leaflets linear to linear-lanceolate, acute at both 
ends. 
Leaflets linear or oblinear and re volute. 66. 
Leaflets linear-lanceolate, acuminate at both 
ends, not revolute. 67. 
Leaflets lanceolate to ovate-lanceolate. 
Leaflets oblanceolate, obtuse. 68. 
Leaflets acuminate. 69. 
Sepals 9-10 mm. long or longer. 
Capsules scarcely exceeding the calyx. 
Stamens exserted; sepals equal. 70. 
Stamens included; sepals unequal. 71. 
Capsules twice as long as the calyx; corolla scarlet 
or purple. 
I. ternata. 
I. lineolata. 
I. fawcettii. 
I. dadylophylla. 
I. Carolina. 
I. furcyensis. 
I. horsfallice. 
I. rubella. 
72. I. plumieriana. 
