CONVOLVULACEAE. 291 



sometimes becoming 4 in the fruit by false partitions; fruit a 

 globular, 2-6-seeded capsule; endosperm mucilaginous. 



403. CONVOLVULUS. MORNING GLORY. 



Herbs or somewhat woody plants, twining, erect or prostrate; 

 flowers 1 or 2 in the axils of the leaves; corolla funnelform to 

 campanulate; stamens included; style undivided, or 2-cleft only 

 at the apex; capsules globose, 2-celled or imperfectly 4-celled 

 by false partitions between the 2 seeds or by abortion 1 -celled. 



Calyx without bracts; stigma filiform. C. arvensis. 

 Calyx enclosed by two bracts; stigmas oblong to ovate. 



Stigmas ovate; leaves fleshy. C. soldanella. 

 Stigmas oblong; leaves thin. 



Bracts ovate, acute. C. sepium. 



Bracts oval, obtuse. C. nyctagineus. 



Convolvulus arvensis L. Whole plant pubescent; stems prostrate, trailing, 

 30-120 cm. long; leaves oblong or ovate, obtuse or acute, 1-4 cm. long, 

 sagittate or hastate or auricled at base; petioles 1-2 cm. long; peduncles longer 

 than the leaves, mostly 1- or 2-flowered; pedicels each with two small bracts; 

 corolla pinkish, 1-2 cm. long; stigmas thread-like. 



A troublesome weed, native of Europe. 



Convolvulus soldanella L. Stems trailing, 15-30 cm. long; leaves thick, 

 reniform, usually entire, glabrous, 2-5 cm. broad; bracts ovate, cordate, about 

 as long as the sepals; corolla purplish, 2-5 cm. long. 



On the sandy seashore. 



Convolvulus sepium L. Usually glabrous, climbing over shrubs to a height 

 of 2-3 m.; leaves sagittate or somewhat hastate, acuminate, 2-5 cm. long; 

 basal lobes entire or angularly 2-lobed; peduncles nearly as long as the leaves; 

 calyx enclosed by two large ovate bracts; corolla white, sometimes pink, 4-6 

 cm. long; stigmas capitate, oval or oblong. 



Banks of streams, reported from the Willamette Valley. 



Convolvulus nyctagineus Greene. Pubescent; stems slender, 5-30 cm. 

 long; leaves ovate or deltoid ovate, acute or obtuse, sometimes angularly lobed 

 at base, truncate or cuneate at base, 2-5 cm. long, on longer petioles; flowers 

 axillary, peduncled; bracts oval, obtuse, about as long as the calyx; sepals 

 obtuse, mucronate; corolla white, about 3 cm. broad. 



Willamette Valley, Oregon, and southward. 



Family 83. CUSCUTACEAE. DODDER FAMILY. 



Whitish or yellowish parasitic twining vines with leaves 

 reduced to minute alternate scales; sepals 5, separate or united 

 into a 5-lobed or parted calyx; corolla gamopetalous, urn-shaped 

 or bell-shaped, 5-lobed, usually with fimbriate or crenulate scales 

 on the tube alternating with the lobes; stamens 5, alternate with 

 the corolla-lobes; ovary globose to oblong, 2-celled; ovules 2 in 

 each cell; capsule circumscissile or indehiscent, 1-4-seeded. 



