ANALYTICAL KEY. xi 



Anthers opening lengthwise. 



Stamens as many as the petals, and opposite them. 

 Calyx-lobes valvate in the bud. . . . RHAMNACE^E, 21 

 Calyx-lobes small or obsolete : petals valvate. . VITACE^:, 22 

 Stamens when just as many as petals alternate with them. 

 Strong-scented shrub : leaves opposite, 2-folio- 



late. ZYGOPHYLLACE.3E, 17 



Strong-scented herbs : leaves lobed or compound. GERANIACE^E, 18 

 Herbs, not strong-scented. 

 Ovules 1 to 4 in each cell. 



Leaves all simple and entire. . . . LINAGES, 16 

 Leaves all opposite, compound, and leaflets 



entire. ZYGOPHYLLACE^E, 17 



Leaves alternate or opposite, the latter with 



divisions or leaflets not entire. . GERANIACE^E, 18 

 Ovules numerous. 



Stamens on the calyx : styles 2 or 3. SAXIFRAGACE.S, 27 



Stamens on the receptacle : leaves opposite, simple. 

 Cells of the ovary as many as the sepals, 



2 or 5 ELATINACE^E, 13 



Cells fewer than the sepals, 3. Mollugo, in FICOIDE^E, 35 

 Shrubs or trees with opposite simple leaves. 

 Leaves pinnately veined, not lobed. . . CELASTKACEJE, 20 

 Leaves palmately veined, lobed. . . . SAPINDACE^E, 23 



Shrubs or trees with opposite compound leaves. 



Stamens 4 to 8. . . . . . SAPINDACE.E, 23 



Stamens 2 or rarely 3. . . ,-, ^ . OLEACE.E, 47 



2. Ovary and fruit inferior or mainly so. 



Tendril-bearing herbs : flowers monoecious or dioecious. CDCURBITACE.E, 33 

 Aquatic herbs : flowers dioecious or monandrous. HALORAGE.E, 29 



Shrubs or herbs, not tendril-bearing nor dioecious, nor umbelliferous. 

 Stamens as many as the small or unguiculate petals and 



opposite them. RHAMNACE^J, 21 



Stamens if of the number of the petals alternate with them. 

 Styles 2 to 5, distinct or united below. 



Fruit a few-seeded pome ROSACES, 26 



Fruit a many-seeded capsule SAXIFRAGACE.E, 27 



Fruit a 1-celled many-seeded berry. . Ribes, in SAXIFRAGACE^E, 27 

 Style 1, undivided : stigmas 1 to 4. 



Flowers in cymes or a glomerate cluster. . CORNACE^J, 38 



Flowers racemose, spicate, or axillary. 



Ovary 1-celled : herbage scabrous. . , . LOASACE.E, 32 

 Ovary 2 to 5-, mostly 4-celled. . . . ONAGRACE^;, 31 



Herbs : flowers in umbels : styles 2 : fruit dry. . . UAIBELLIFER^E, 36 



Herbs or shrubs : flowers in umbels : styles 4 or 5 : fruit 



berry-like ARALIACE^, 37 



