Dicotvh or Exogenous Plants. 99 



Pol-e-mo -ni-um rep'-tans L. Greek Valerian. — Stems weak, spreading, 

 6-10 in. high; leaflets o-lo; corolla light blue, about Yz in. wide. 



LXXIII. Order CON-VOL-VU-LA' CE /C. MORNINC GLORY FAMILY.— 



Generally twining or trailing; flowers regular and perfect; calyx per- 

 sistent. 



stigmas 2, liuear-filiforni to subulate or ovate Convolvulus. 1 



Stigma capitate or 2-8-globose Ipomcea. 2 



1. Genus CON-VOL'-VU-LUS. — Corolla funnel-form to campanulate; 

 sometimes 2 leafy bracts at base of calyx ; plants twining, erect or 

 prostrate. 



Con-vol'-vu-lus spi-tha-mae -us L. Upright Convolvulus. — Downy; stem 

 low and mostly simple, upright or ascending, (i-l'i in. long; calyx 

 enclosed in 2 broad leafy bracts ; stigmas oval to oblong ; corolla 2 in. 

 long. 



Con-vol'-vu-lus se-pi-um L. Hedge Bindweed. — Glabrous or more or 

 less pubescent ; stem twining or sometimes trailing extensively ; cal^'x 

 enclosed in 2 broad leafy bracts ; stigmas oval to oblong; corolla l|^-2 

 in. long. 



Con-vol'-vu-lus ar-ven'-sis L. Bindweed. — Stem procumbent or twin- 

 ing and low ; no bracts at or near the base of the calyx ; stigmas fili- 

 form ; leaves ovate-oblong, arrow-shaped; corolla j^ in. long. 



2. Genus IP-0-IV!(E'-A. — Otiter sepals commonly larger; corolla 

 funnel-form or nearly campanulate, contorted in the bud ; ovary 2-3- 

 celled or often more in cultivated species. 



Ip-o-moe'-a pur-pu'-re-a Lam. Common Morning Glory. — Lobes of 

 stigma o; sepals long and narrow, bristly-hairy below; corolla funnel- 

 form, 2 in. long, purple, varying to white; cultivated and wild. 



Ip-o-moe'-a pan-du-ra'-ta (L.) Meyer. Man-of-the-earth ; Wild Potato- 

 vine. — Perennial, smooth or nearly so when old, trailing or sometimes 

 twining; sepals smooth, ovate-oblotig, very obtuse; corolla open fun- 

 nel-form, 3 in. long, white with pitrple in the tube ; stigma 2-lobed or 

 entire. 



Ip-o-mce'-a la-cu-no'-sa L. Small Morning Glory. — Annual, rather 

 smooth; stem twining and creeping, slender; sepals lance-oblong, 

 pointed, bristly-ciliate or hair}-; corolla white, ^-ji in. long; stigma 

 2-lobed or entire. 



