Dicotyls or Exogenous Plants. !>7 



;!. Genns CHI-O-NAN'-THUS.— Calyx 4-parted, very small ; corolla 

 of 4 long and linear petals; shrub with entire petioled leaves and 

 panicles of showy white flowers. 



Chi-0-nan -thus vir-gin'-i-ca L. Fringe-tree. — Cultivated; native far- 

 ther south. 



4. Genus LI-GUS'-TRUM. -Calyx short-tubular, 4-toothed, decid- 

 aious; fruit a 2-celled berry ; shrubs with entire leaves and small white 

 flowers, in terminal panicles. 



Li-gus'-trum vul-ga'-re L. Privet or Prim. — Leaves very sinooth ; 

 Jjerries black. Cultivated ; sometimes naturalized. 



LXX. Order GEN-TI-AN-A'-CE-/E. GENTIAN FAMILY.— Herbs ; flow- 

 ers perfect and regular; calyx persistent; ovary 1 -celled; stamens 

 inserted on the corolla. 



Leaves simple, sessile : corolla 4-lobed Obvlaiia. \ 



Leaves S-foliate : corolla o-cleft, bearded inside Mtniyaiitlirs. 2 



1. Genus OB-O-LA'-RI-A. — Calyx of 2, spatulate, spreading sepals; 

 corolla tubular-bellshaped, 4-cleft; a ver}^ smooth purplish-green plant, 

 .'i-S in. high, with opposite, obovate leaves. 



Ob-o-la'-ri-a vir-gin'-i-ca L. Obolaria.— Herbaceous and rather fleshy, 

 the lower leaves scale-like: flowers ■, in. long. 



•1. Genus MEN-Y-AN'-THES. — Calyx o-parted; corolla short, fun- 

 nel-form, 5-cleft, the upper surface white-bearded; flowers racemed on 

 the naked scape; leaflets W, oval or oblong. 



Men-y-an'-thes tri-fo-li-a'-ta I.. Buckbean. — In bogs. 



LXXI. Order A-POC-Y-NA'-CE-/E. DOGBANE FAMILY.— Herbaceous 



or woody; flowers perfect, regular, 5-nierous; carpels 2. 



Shrubs, the corolla-throat .")-augled / 'inca. 1 



Herbs, erect, corolla campauvilate Aporyinmi. _' 



1. Genus VIN'-CA. — Calyx o-parted; corolla funnel-form or salver- 

 form, the orifice "j-angled; leaves opposite, evergreen; trailing shrubs. 



Vin'-ca mi'-nor L. Periwinkle. — Flowers solitary, axillary, violet 

 varying to purple or white; stems procumbent, several feet in length. 



