CONVOLVULACEAE ■ (mORNING-GLQRY 'FAMILY) 393 



^eds rustyjpubegcent. Bush MoBNiNG-GLORY.-nOa 4*y bajikB ; Ijhjwugh east- 

 em Wyoming and Colorado. 



3. Ipomoea purpiirea (L.) Jlpth. Bot. Abh. 27. 1787.,, (An apniwl, With 

 long, slender, twining stems: leaves corda.te, entire: Pj^dTOclefi, 5-15. cm. Ipngj 

 bearing 1-5 umbellately clustered' flowers; the pedicels thickened and refracted 

 in fruit: sepals lanceolate, somewhat hirsute, 10-12 mm. loilg: cordlla abdut 

 5 cm. long, purple to white and often variegated: capsule depressed-globose. 

 The conynon Morning-glory. — Sparingly; escaped fpom eultiyat,iQi;i. , ; i i . . : 



4. Ipomoea mexicana Gray, Syn. Fl. 2: 210. 1878. A slender annual 

 with angulate, 3-lobed leaves or some entirfe; the later ones deeply 4obedj the 

 lobes ovate-lanceolate, often cordate at base^: .peduncles slendet, 1-3-flpwered; 

 the pedicels as long as the lanceolate sepals: sepals hispid or lightly hirsute, 

 about 12 mm. loiig: corolla, violet-piirple, rarely • 3 cm. long. — ^ProWably 

 within our range on the soijth. .,, , , :; , ' 



5. Ipomoea hederacea Jacq. Ici Rar, pi. 36. 1781. Stem slender, 6-15 dm. 

 long, retrorsely hairy: leaves deeply 3-lobed; the lobes ovate to ovate- 

 lanceolate, and the middle one narrowed at ba^e,'the lateral ones oftepr^ep^ijldr 

 lobed: peduncles short, 1-3-flowered,. pedicels, wanting or nearly so: sepals 

 linear-attenuate from a dilated and densely longiVilteus-hirsute base, 2-3 "eta. 

 long, at length recurved: corolla sky-blue, with whitish tube, 4-5 cm. long: 

 capsule depressed-globose. Ivy-leaved MoRNiiNGrOLORY. — Introduced from 

 tropical America. 



3, COITVOLVUI-US L. Bindweed ■ ,,V 



Ours slender twining or trailing perennial herbs, generally with cbrdate 

 or sagittate-petioled leaves and larg^, axillary flbwers. Sepals equal or uii- 

 equal, dften a pair of bracts At their base. Corolla campanUfete to fifnnfe^torm, 

 puca^e; the limb entire or lobed. Stamens inserted'on the' tube, ifacl'ilded-. 

 Stigmas 2, filiform or oblong. Capsule globose!, 2'-4-v^lved, usually 2-celled. 



Calyx subtended and inclosed by 2 bracts. 



Leaves hastate, glabrate . 1, C. sepiuUi. 



Leaves oblong-cordate, pubescent . . . , . " . . 2. C. tepens. 



Calyx not subtended by bracts. , ^' 



Leaves broad, entire, glabrous , ; , .... • • . 3. C, arrensis. 



Leaves narrow, lobed at base, canescent ' .'.';'.. «, . ' ^ . -. • 4. 0. incanus. 



1. Convolvulus sepium L. Sp. PI. 153. ' 1753. Glabrous of slightly pubes- 

 cent, freely twiniag: leaves slender-petioled, deltoid'-hastate, 5-12^ cin. long, 

 acute or acuminate, the basal-lobes acute, divergent, entire or ahgulaie toothed : 

 peduncles elongated, 1-flowered;. bracts cordate-ovate: corolla broadly funnel- 

 form, pink or white: stigmas oblong. Hedge Bindweed. — Introduced in 

 many localities. ' ,,, 'i ' ',, ,' ' 



2. Convolvulus repens L. Sp. PI. 153. 1753. _ Pubescent or tomentose; 

 stems prostrate-trailing: leaves oblong, with sagittate or cordate^ htase, the 

 lobes entire, obtuse or rounded: flowers much as in the preceding; . goroUa 

 usually white. Trailing Bindweed. — ^Frequent in fields. , vr 



3. Convolvulus arvenis L. Sp. PI. 153. 1753. Nearly glabrous, the twining 

 stems very slender, 4 dm. or more long: leaves oblong-sagittate, or somewliat 

 hastate, 3-5 cm. long, the basal-lobes:shortj acute; bracts at base of .pedicel 

 small and subulate: corolla white or tinged with rose, 2-3 cm. long: Stigmas 

 filiform. — Sparingly as an introduced weed. 



4. Convolvulus incanus Vahl. Symb. 3: 23i 1794. Canescent with a 

 short and close silky-pubescence; stems filiform, 3-10 dm. long, mainly pro- 

 cumbent: leaves shprt-petioled, polymorphous; some simply lanceola,te- or 

 linear-sagittate or hastate,, obtuse and mucronate, entire^ and with ttee nar- 

 row elongated tasal lobes entire or 2-3-toothed; usually' variously cfeft or 

 parted at base, the lobes divergent or reflexed: peduncles equalinjg the leaf, 

 1-2-flowered: corolla white pr tin,ged with rose, the angles salient-acuminate, 

 10-14 mnt long. — Throughput the eastern part of our range tp Texa^s. 



