SYNOPTICAL KEY. 5 



34 Droseracese. Sepals and petals 5 : styles 3, 2-parted : capsule 3-valved, 



many-seeded. Low marsh herbs with the leaves all radical and beset 

 with gland-tipped hairs. 



35 Ceratophyllacew. Fruit a crustaceous 1-seeded achene. - Submersed 



aquatic herbs with finely dissected whorled leaves and minute axiltoy 

 flowers. 



36 Lythracese. Flowers 4- or 6-merous : style 1 : capsule enclosed in the 



calyx, 2-4-celled, many-seeded. Herbs with mostly opposite leaves 

 and axillary flowers. 



* * Ovary wholly inferior. 



■<- Fruit with central placentse: stamens few. 



*f Not tendril-bearing and flowers not in umbels : stipules none. 



37 Halorageee. Fruit indehiscent, nut-like, ■1-4-celled, with a single sus- 

 ■ pended seed i^); e^ch cell; Aqu^ticjierbs with opposite or verticillate 



leaves and inconspicuous axillary flowers. 



38 Onagraceae. Flowers 2- or 4-merou8 : calyx valvate in the bud ; style 



1 ; fruit a 2- or 4-celled capsule or berry-like. 



■"• ■"• Tendril-bearing herbs with alternate leaves without stipules. 



89 CncnrMtaceie. Flowers monoecious or dioecious, often gamopetalous : 

 fruit fleshy, indehiscent, l-several-celled. || 



I- t- Fruit with parietal placentse, several-many-seeded: stamens 

 many: stipules none. 



40 Loasacese. Flowers perfect, conspicuous ; style 3-cleft : capsule I'Cell- 

 ed; leaves rough with tenacious hairs. 



41 Ficoideae Sepals mostly 5 ; petals none ; capsule 3-5-celled. 



42 Cactacese. Sepals and petals numerous : stamens many : capsule 



1-celled. Leafless, usually prickly, fleshy perennials. 



-^ I- ■<- Fruit indehiscent; dry, berry-like ,or drupe-like, mostly 

 2-eelled, with a suspended seed in each cell: ovary with an epigynous 

 disk (wanting in Garry a). 



■"■ Flowers in umbels. 



43 Umbelliferie. Carpels and styles 2 : fruit dry. 



44 Araliacese. Carpels and styles 4 or 5, becoming a berry-like fruit'. 



** *♦ Flowers in cymes or aments. 



45 CornacesB. Inflorescence cymose : flowers perfect, 4-merous : style 1 : 



fruit baccate, 2-3-ceHed. Herbs shrubs or trees with opposite leaves. 



46 G^rryacege. Flowers in ainents, dicecipus : sepal? 4 : petals none : styles 

 • 2Vfruit-baccate, 1-celled. Shrubs with opposite,, si«i,pi'e.l^5i:eB. 



Flowers perfect, cymose, 5-merous; petals imbricated, united: fruit baccate 

 bemes containing 1-5 seed-like nutlets. Sambucese. 



