,4 



xxii KEY TO FAMILIES AND ABNORMAL GENERA. 



Poly petals with inferior ovary, 



f Stamens five or six, as many as the petals. .... 29 

 28 -{ Stamens four to ten, twice the petals ...... 31 



[_ Stamens numerous 33 



[ Herbs with small opposite leaves and pink flowers in leafy 



I spikes. In damp places . . . . /. 159. ammannia. 

 29 <( Herb with alternate heart-shaped leaves and solitary white 



j flowers. In damp places . . . /. 141. parnassia. 



[ Strongly smelling plants with small umbelled flowers . 30 



r Shrubs or trees : leaves large palmate. /. 177. araliace/e. 

 30 «j Herbs: leaves entire or much divided: fruit separating 



[ into two halves /. 167. umbellifer^. 



Parts of flower in twos or fours. Herbs. 



Petals four to five ; anthers eight to ten, large or blue, horned 



[ at the base or filament bent . /. 154. melastomace^e. 



J Flowers unisexual, small. In marshes./. 147. serpicula. 

 ^^ [Land plants ; flowers often large . /. 160. onagrace^:. 



f Leaves entire, scented, opposite except in Eucalyptus : 



33 •{ stamens curled inwards in bud . /. 147. myrtace^. 



L Leaves alternate toothed, simple or not. /. 129. rosace^e. 

 r Ovary or carpels superior 40 



34 -| Ovary inferior : fruit crowned by the dried calyx or its 



[ scar . . 35 



Monopetals with inferior ovary. 

 r Shrubs parasitic on other trees : seed very sticky, anthers 

 35^ five, slender ...... /• 352. loranthace^. 



[ Herbs, shrubs or trees rooting in the ground. . . 35 



r Leaves alternate . 37 



^ (Leaves opposite. . {See also 2) 39 



[ Fruit one-seeded : trees with many stamens : leaves 



37^ usually toothed p. 271. symplocos. 



[ Fruit with many seeds 38 



Stigma unbranched : stamens ten, opening by holes, horned: 



tree or shrub /• 257. vacciniace^. 



Stigmas three, climber, leaves angular rough : stamens 



three, S-shaped /. 165. cucurbitace^. 



I Herbs, small or tall : stigmas two or three : flowers bell- 

 L shaped or two -lipped. . . . /. 253. campanulace^. 

 r Stamens three : fruit with feathery hairs. Herbs. . . . 



/. 202. valerianace^. 

 Stamens four or five : leaf-stalks at least when young con- 

 nected by united stipules. . . . /. 185. rubiace/e. 

 Stamens five : leaves of a pair connected by a line only, 

 no stipules p. 180. caprifoliace^. 



38 ■! 



39 



