lxviii INTRODUCTION. 



(No leaves. Stems thread-like, adhering to other plants. 

 Cuscuta (p. 306). 

 Leaves alternate or radical 68 

 Leaves opposite . 71 



Rft /Shrubs with evergreen leaves Ilex (p. 97). 



D0 \Herbs 69 



(Corolla scarious, deeply 4-lobed. Stamens longer than the 

 corolla Plantagine^ (p. 365). 

 Corolla of the consistence of petals. Stamens shorter than 

 the corolla 70 



^ /Leaves narrow, entire . Limosella (p. 331). 



\ Leaves orbicular, crenate , Sibthokpia (p. 332). 



71 /Leaves entire . . Gentianace^j (p. 299). 



\ Leaves toothed or cut Verbena (p. 362). 



^ 2 /Fruit a berry . . .73 



\ Fruit a capsule 74 



^o /Shrubs with evergreen leaves Ilex (p. 97). 



\ Stem or branches herbaceous . . . Solanace^s (p. 316). 



h ./Leaves opposite, entire 75 



\ Leaves alternate, or none 76 



'Trailing plants with evergreen leaves. Two ovaries joining at 



the top into one style VlNCA (p. 298). 



1h\ Small procumbent shrubs, with very small evergreen leaves. 



Ovary single ...... Loiseletjeia (p. 281). 



Herbs. Ovary single .... Gentianace^e (p. 299). 



y fi / Leaves divided . . .77 



\ Leaves undivided or none 78 



(Leaves of 3 leaflets. Corolla hairy within. Aquatic plant. 

 Menyanthes (p. 303). 

 Leaves pinnately cut. Corolla smooth. Erect herb. 

 Polemonium (p. 304). 

 {Aquatic plant, with floating orbicular leaves LiMNANTHEMUM(p.304). 

 Twining or procumbent plants. Corolla campanulate. Seeds 

 2 or 4 in each capsule . . . Convolvulace^: (p. 305). 

 Tall erect plants. Seeds numerous 79 



{Corolla nearly rotate, the upper lobes overlapping the lower ones. 

 Veebascum (p. 324). 

 Corolla campanulate, or with a distinct tube, the lobes folded 

 in the bud Solanace^e (p. 316). 



f Stamens 5, free 79 



804 Stamens 3. Small plant with minute white flowers. Montia (p. 77). 



[Stamens 2 or 4 81 



81 /Corolla with a spur 82 



\ Corolla without a spur 83 



82 /Two stamens. Capsule 1-celled . Lentibulace^e (p. 294). 

 \Four stamens. Capsule 2-celled . Sceophulaeine^j (p. 323). 

 f One or two seeds in the ovary or capsule . Veebenaceje (p. 362). 

 83 1 Several seeds in the capsule, or at least several ovules in the 



[ ovary 84 



[ Plant leafless, except scales of the colour of the stem. Capsule 

 84 1 1-celled ... . Oeobanchacjble (p. 319). 



I Leaves green. Capsule 2-celled . . Sceophulaeine^e (p. 323), 



