KEY TO NATURAL ORDERS. 19 



Pistil 1, compound ; either its styles, stigmas PAGK - 



or ovary cells more than 1. 



Style 1, entire, or barely cleft at top. 

 Stamens united into a tube, with 



anthers in its orifice. 

 Trees with odd-pinnate or bipinnate 



leaves. MELIACE^E, 69 



Stamens distinct. 



Anthers opening by holes or chinks 



at top. 



Anthers opening across the top. ERICACEAE, 207 



Anthers opening lengthwise. 



Herbs. Stamens 6, 2 of them 

 shorter. CRUCIFEILE, 42 



Woody plants. Fruit few- 

 seeded. 

 Stamens fewer than 



the 4 long petals. OLEACEJE, 264 



Stamens as many as 



the broad petals. CELASTRACE^E, 86 



Styles or sessile stigmas 2-6, or style 

 2 - 5-cleft. 



Ovary and fruit 1 -celled. 



One-seeded. Shrubs. AxACARDiACEuE, 77 

 Several- or many-seeded. 

 Seeds in the cen- 

 tre of the pod. CARYOPHYLLACEJE, 56 

 Seeds on the walls 

 or bottom of 



the pod. SAXIFRAGACE^;, 143 



Ovary with 2 - 5 or more 

 cells. 



Sessile stigmas and sta- 

 mens 4 -6. AQUIFOLIACE^E, 216 

 Styles or long stigmas 



2 : fruit 2- winged. ACERACE.E, 89 



Styles or divisions of 

 the style 5. 



Stamens 5: pod 

 partly or com- 

 pletely 10-cell- 



ed. LINAGES, 70 



Stamens 10 : pod 

 5-celled. Leaves 



compound. OXALIDACE.E, 72 



Stamens 10 (or 

 fewer) : styles 

 united with a 

 long beak, split- 

 ting from it 

 when ripe. GERANIACE.E, 71 



