KEY to FAMILIES AND ABNORMAL GENERA xV 



Monopefals. 

 [ Ovary or carpels superior ••........ 43 



37 \ Ovary inferior : fruit crowned by the dried calyx or its 

 L scar . 38 



Monopetals with inferior ovary. 

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



38 <| five, slender ...... /. 352. loranthace^.. 



1^ Herbs, shrubs or trees rooting in the ground . . . 41 

 j Leaves alternate 40 



^^ ( Leaves opposite . .{See also 2) . 42 



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



40^ usually toothed. /. 271. symplocos. 



1 Fruit with many seeds 41 



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



I tree or shrub /• 257. vacciniace/e. 



J Stigmas three, climber, leaves angular rough : stamens 

 I three, S-shaped, or five straight . /. 165. cucurbitace/e. 

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

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

 I Stamens three : fruit with feathery hairs. Herbs 



I /. 202. VALERTANACE.E. 



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

 I nected by united stipules. . . . /. 185. rubiace^. 

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



I f'o stipules. /. 180. caprifouace^. 



Monopetals with superior ovary. 

 \ Stamens united round and to the stigma : carpels and 



43 j styles inside two, distinct ; fruit of two follicles : leaves 



I opposite /. 281. asclepiadace^. 



[ Stamens distinct 44 



f Stamens five equal in number to the corolla lobes . . 46 



44 { Stamens eight or ten 4c 



1^ Stamens four or two usually fewer than the corolla lobes. 49 



f Stamens eight : succulent herbs with thick leaves, and 



j yellow, four-petalled flowers . . A 144- crassulacE/E. 



^^ J Stamens ten : anthers opening by terminal pores : leaves 



[ ^^'"^ • . • • • A 259. ericace^ 



( Stamens eight or five and five staminodes. trees 



I A 76. SAPOTACE^. 



I Stamens on the corolla, opposite its lobes : ovary one- 



46 <J celled . 47 



i Stamens between the corolla lobes *. . 48 



f Herbs : flowers yellow or pink : seeds many on central 



47 j placentum . A 262. primulace^e 



[Trees or shrubs : seed one only . . p, 75. myrsine.^. 



