MORNING GLORY FAMILY 109 



heart- or arrow-shaped and stalked; perennial with trailing, twining or 

 erect stems. 



1. Ba$e of the flower enclosed in 2 sepal-like bracts 



a. Leaves smooth, the basal lobes spreading C. sepium 



b. Leaves hairy, basal lobes not spreading C. repens 



2. Base of the flower without sepal-like bracts. 



a. Leaves smooth, entire C. arvensis 



b. Leaves gray-hairy, more or less lobed C. incdnus 



EVOLVULUS Linne 1762 EVOLVULUS 

 (Lat. e-, not, volvulus, twining) 



Sepals 5, united, petals 5, blue, pink or white, united into a funnel- 

 form, bell-shaped or saucer-shaped corolla, stamens 5, on the corolla, 

 ovary with 2 cavities, style 2-divided to the base or near it, each division 

 deeply 2-cleft, stigmas thread-like, capsule globose to ovoid, 2-4-valved, 

 1-4-seeded; flowers axillary, solitary or in clusters; leaves small, usually 

 entire; annual or perennial. 



Stems 4-12 in. high; leaves oblong to spatulate, 5-20 

 mm. long; flowers 6-12 mm. wide E. argent eus 



IPOMOEA Linne 1753 MORNING GLORY 



(Gr. ips, ipos, worm, homoios, like) 



PL 19, fig. 2. 



Sepals 5, united, petals 5, pink, red, blue, purple or white, united into 

 a funnel- or bell-shaped corolla with a more or less plaited tube, stamens 

 5 on the tube of the corolla, included, ovary with 2-4 cavities and 4-6 

 ovules, style thread-like, included, stigmas 1 or 2, globose, capsule globose 

 or ovoid, 2-4-valved ; flowers axillary,^ solitary or clustered ; leaves entire, 

 heart-shaped or lobed; annual or perennial. 



1. Plant bushy, 2-5 ft. high; leaves lintar; flowers 



pink to red I. leptophylla 



2. Plant trailing or climbing ; flowers blue to purple 



or white 



a. Leaves entire, heart-shaped at base /. purpurea 



b. Leaves 3-lobed I. hederdcea 



CUSCUTACEAE DODDER FAMILY 



Sepals 5, separate or united, petals 5, united into a bell-shaped" to 

 cylindric tube, the latter usually containing fringed scales alternate with 

 the lobes, stamens 5, alternate with the corolla lobes, ovary 2-celled, ovules 



