.278 CONVOLVULACE^K. 



A vigorous clirabor, in hedges anl low grounds; June. July: cultivated. F tow- 

 ers about 2 inches in diameter, white, often tinged with roie-color, opening at dawn 

 aud cloudy weather. 



2. C. spitiiam.ea, Pursk Erect Bindweed. 



Downy; s£c»i low. anl mostly simple, erect or ascending; learns ob- ->ng-lanceo- 

 late, subcordate or auricled at base, obtuse or pointed at the apex; pedu-icles 

 usually longer than tb.3 leaves, 1-fiowered. (Convolvulus stan*, MicliK.) 



Dry fields anl hilly pastures. June, July. Stem 6 to 12 inches h'.gh, no' 

 ing, branching, Leafy. Lmves 2 to 3 inches lonj;, ]4 as wide, with an abrupt 

 date base, on petioles, % to % inch long. Flowers 2 inches leug, white on po- 

 riuncles '2 to .4 inches long. Bracts concealing the calyx. 



2. CONVOLVULUS, Linn. Morning-Glory. 



Lat. convolve-, to entwine. 



Calyx 5-parted, naked. Corolla bell-shaped or funnel- 

 form, with a spreading nearly entire or 5-lobed border 

 Stamens 5, mostly included. Style 1, often 2-cleft at the 

 apex; stigmas 2, rarely 3. Capsule 2 to 3-celled, 2 to 3- 

 valved. — Chiefly twining or trailing plants, often with milky 

 juice, and axillary peduncles, \ -many flowered. 



Ssc I. Convolvulus proper.— Stigmas 2, linear ; capsule 2-celled. 



1. C ARV£N3I8, L. Small Bindweed. 



Stem procumbent or twining, low, angled, somewhat hairy; leaves ovate-oblong, 

 a l-ow shaped, with acute lobes at the base ; peduncles mostly 1-iiowercd, bibracteate, 

 near the base ; sepals roundish-ovate. 



Fields, common, introduced from Europe; a very troublesome weed. Jan*, 

 July. Stems several feet long. Leaves 1 to 2 inches long, the lower ones obtuse, 

 <-n short petioles. Flowers 1 inch long, white, often with a tinge of red, on pe- 

 duncles longer than the base. 



Sec it. Ipomcea, L. Stigmas 2, globular or united into one; capsule 2-celled, 4- 

 seeded, 



•2. C. panduratus, L. Wild Potato-vine. 



Stem, trailing or sometimes twining; leaves broad-cordate or panel urifrrro ; pa- 

 dutnMes 1 to 5-fiowered, longer than 'the petioles; calyx smooth, with ovate-oblong 

 sepals; corolla open-funnel-form. 



Sandy fields and dry banks common. July. Aug. Slums long and stout, from 

 a thick root which often weighs 10 to 20 pounds. Leaves 2 to 3 inches long, and 

 about the same width, acute or obtuse, occasionally some of them are. contracted 

 at the side SO"as to be fiddle-shaped, Flowers 3 inches long, purplish and white, 

 opening in the forenoon. Man-of-the-earth. 



v, C. LACUNOSUS, Spreng. Morning- Glory. 



Rather smooth; stem creeping and twining, slender; le wtS heart-shaped, point- 

 ed, angular-lobed or entire, on long petioles; peduncles very short, 1 to 3-tfowered; 

 t'peds oblong-lanceolate, acute, half as long as the corolla; corolla 5-lobed. 



\Toods, dry fields and hills, rare. Aug., Sept. A small prostrate species, 2 to 8 

 feet lpng. &eax*$ 3 inches long, 1% wide, deeply heart-shaped, often deeply 3-lobed ' 

 petioles 1 to 3 inches lon_g. Flowers >j to % inch in diameter, % inch long, white 

 with a purplish rim, the corolla 5-lobed. 



Sec. hi. Pharbitis, Choisy.— SisV/m as mostly 3, united, eapitate ; capsule 3-cclled ; 

 celU 2-seeded. 



