GENERAL KEY TO THE POIATETALOUS ORDERS. LX 



9. FUMARIACE^. Flowers dimerous, or uiisymmetrical. Sepals 2. Petals 4, 

 (in ours) erect and connivent in two dissimilar pairs. Stamens (in ours) C, in 

 two groups of 3 each. Ovary 1-celled. 



10. CRUCIFER/E: Flowers regular (except sometimes in Slre.ptanlhus). Sepals 4. 

 Petals 4, rarely wanting. Stamens (J (rarely 4, or only 2), tetradynaraous. Ovary 

 with few exceptions 2-celled by a false partition. Seeds with embryo usually 

 folded. 



++++++ Stamens indefinitely numerous or subdefinite but not diadelphous 

 nor tetradjnamous: seeds reniform, exalbuminous, with curved embryo; 

 cotyledons incumbent : leaves alternate, often palmate or dissected. 



11. CAPPARIDACExE. Floral envelopes 4-raerous, usually regular. Stamens 6 to 

 many. Ovary 1-celled (2-celled in Wislizenia and Oxystylis), often stipitate, with 

 2 or rarely more parietal placentae. Leaves entire or more commonly pakuately 

 compound. 



12. RESEDACE^E. Flowers small, irregular. Sepals herbaceous, 4 to 7 (or 8), 

 more or less unequal. Petals 2 to 6, commonly cleft or toothed. Stamens 3 to 

 many, unsymmetrical, or declhied, somewhat i^erigynous or borne upon an oblique 

 discoid expansion of the torus. Capsules 3-6-lobed, 1-celled; placentae 3 to (1. 

 Introduced herbs, with entire dentate or laciniate leaves. 



++ +H- ++ ++ Stamens indefinitely num»irous or definite ( Violacece) : seeds 

 albuminous and with rather large embryo (except in Canellacece). Fruit 

 when dehiscent splitting between the placent.ie : leaves undivided or rarely 

 palmately lobed, opposite or alternate : stipules often present. 



13. CIST AC E^. Flowers regular, 3-5-merous. Stamens usually numerous, free; 

 anthers introrse. Ovary 1-celIed or imperfectly septate ; placentas parietal, 3 to 5. 

 Ovules orthotropous. Leaves entire. Usually low shrubby plants. 



14. VIOLACEiE. Floral envelopes 5-merous, irregular. Stamens 5; filaments 

 short or none ; the subsessile anthers connivent or connate by the union of their 

 prolonged connectives. Carpels 3. Style and stigma simple; ovary unicellular 

 with 3 placentae ; ovules anatropous. Fruit a 3-valved capsule. Ours all herbs. 



15. CAXELLACEJE. Flowers regular. Sepals (in ours) 3 and petals 5. Stamens 

 monadelphous ; anthers cxtrorse. Ovary 1-celled ; carpels 2 to 4 ; fruit baccate. 

 Seeds campylotropous or anatropous. Trees with entire punctate aromatic leaves. 



16. BIXACEiE. Flowers regular, perfect or unisexual. Sepals 2 to 6, in ours 5. 

 Petals as many, rarely tnore numerous or none, in ours 5. Stamens indefinite (in 

 certain foreign genera definite). Carpels 2 to many. Ovary 1-celled, or in ours 

 3-celleds ovules amplutropous or anatropous. Trees, shrubs (tropical) or ours 

 low herbs or scarcely shrubby, with alternate sometimes palmatifid leaves. 



17. FRANKENIACE.E. Floral envelopes regular, perfect, 4-5(-G)-merous. C'alj-x 

 tubular, persistent. Petals unguiculate. Stamens 5 to many, free or slightly 

 connate at the base. Ovary 1-celled ; placentae 2 to 4 ; ovules anatropous. SaUne 

 herbs or low shrubs with opposite leaves and small flowers. 



^ ^_ -H- Carpels 2 to many (very rarely solitary), united ; ovary unicellular 

 or partially septate at the base or in most Ficoide<e. completely several - 

 colled ; placenta? axial or basal (in Fouquieria parietal but so strongly in- 



