U I STHRN MIDDLE t'ALIFOENl A . 11 



Anthers opening by longitudinal slits; herbs. 



Pruit a capsule opening from the apex by valves or teeth; 

 petals 5 or 4. 

 Calyx tubular or of 5 (or 4) distinct sepals; stamens 3 to 

 10, commonly 5 or 10; cajisule 3 to 10-valved or 



-toothed; placentfe central; stales 2 to "> 



Cartophyllace^e, p. 163. 



Calyx of 2 distinct sepals; stamens 5 (or 3 to many); 



capsule 3-valved; placentae central or basal; styles 2 



to 8 PORTl'I.ACACE.E, p. 184. 



Calyx tubular; stamens 4 to 7; capsule 2 to 4-Talved; 



placentse parietal; style 3-cleft 



Frankkxiackjs, p. 162. 

 Fruit indehiscent. 



Style 1 or none; sepals and petals 4; stamens tetradyna- 



mous CRUCiri;R.B, p. 210. 



Styles, sepals, petals and stamens 5 



Plitmbaoinace^j p. 377. 

 Ovary more than 1-celled. 

 Anthers opening by pores at the summit; sepals and petals 5 

 or 4, the stamens as many or twice as many; capsule 

 5-eelled .... .... ERiCACua:, p. 'R(;7. 



Anthers opening by longitudinal slits. 

 Herbs. 

 Leaves alternate or basal. 



Sepals and petals 4; stamens 6. 



Ovary not stipitate; stamens commonly 4 long and 2 

 short (tetradynamous); sepals and petals 4; fruit 



a 2-celled capsule (silique or silicle) 



Cruciferje, p. 210. 

 Ovary raised on a stipe; stamens not tetradynamous; 

 leaves 3-foliolate . . Capparidaoe-E, p. 229. 

 Sepals and petals 5; fruit a 5-celled capsule. 



Stamens 10, more or less united at base; leaves 



3-foliolate . . . Oxalis, p. 24-5. 

 Stamens 5; leaves simple . LixACEJi, p. 243. 

 Leaves opposite; annuals. 

 Calyx of 2 distinct sepals; flowers 2 to a-merous; fruit 



a 2 to 5-celled capsule . Elatinace*, p. 284. 

 Calyx tubular; stamens 10 and petals 5, the latter 

 clawed; fruit an imperfectly 3-celled capsule . . . 

 Silene Gallica, p. 165. 

 Shrub; fruit a simple samara; stamens and petals 2 each; 

 leaves opposite, pinnate. . Fraxinus dipetala, p. 385. 



3. Stamens perigynous, i. e., on the calyx or on a more or less evident disk. 



Stamens on ;i hypogynous disk or on a disk lining the base of the 

 calyx. 



