SYNOPTICAL KEY. 3 



++ ++ Flowers regular: leaves without 'stipules. 

 Sepals and petals 5,: stylesS, 2rparted: capsule 3-Talved, many seeded. 



Low herbs with the leaves all radical. Droseraceie. 

 Sepals and petals 5: stamens indefinite: styles 3: capsule 3-valved. Low 

 herbs with opposite leaves. Hypericum in Hypericacem. 

 * * * Ovary of S-several carpels and central DlacentsB; stamens most- 

 ly strictly hypogynpus: sepals persistent. ;; ■'i'' "' y 



H- Flowers very irregular. 



10 Polygalaceoe. Capsule compresagd, narrowly winged, 2Tcelled, 2-8eed- 



ed f stamens 4-8, monadelphpup (united iiiio a tube that is split,on the 

 ■ upper side), "or distinct : anthers 1-celled, ogening at the top. ' • 



+- +- Flowers regular: capsule 2-celled with free central placentae: 

 embryo curved around central albumen. 



11 Caryophyllacese. Flowers riiostly 5-m.ero.us ; petals sometimes none: 



stamens 10 or fewer : styles 3-5, the capsule opening by as many or 

 twice as many valves : ovules numerous. Herbs, rarely woody at base, 

 with opposite leaves mostly withdti't stipules. 



12 Portulacacese. Sepals 2, 4-8 in Lewisia : petals 2-5 or more : stamens 



few-many : style 2-cleft : ovules few or many ;, capsule 2-3-valved or oir- 

 cumscissiie.'"' 



+- -4- ^- Flowers regular: ovary 3-seyeral celled., 

 • -M- Capsule not lobed nor winged. 

 = Stamens distinct or nearly so, not in fascicles. 

 Sepals andnpetalsi 5, tpersisteat: stamens imany: style 5-lobed: capsule 5- 

 celled, 5ryalved, many-seeded. Aoaulasoenb marsh perennials with 

 pitcher-shaped leaves and solitary flowers. Sarra-ieniacese. 



13 Elatiniucese. Sepals and petals 2-5 : styles distinct : capsule 2^5-celled, 



many-ovuled. Low herbs with opposite leaves, membranous stipules^ 

 and axillary flowers. 



= = Stamens clustered at base into fascicles. 



14 Hypericaceae. Sepals and petals 5: stamens numerous, in 3 fascicles: 



styles 3 : capsule 3-celled, many-seeded. Herbs with opposite entire 

 leaves without stipules, and yellow flowers in cymes. 



= = ==. Stamens monadelphous (united into a tube) , 



15 Malvaceae. Calyx valvate : petals 5, united at base : stamens numer- 



ous ; anthers 1-celled : carpels either in a ring 1-few-seeded and at length 

 separating, or forming, a 5-10-celled many-seeded capsule. Herbs or 

 shrubs with alternate stipulate leaves. 



= = === Stamens 5, not united. 



16 Linaceae. Flowers 5-merous : styles 2-5 : capsule 2-5-valved, 4-10-cell- 



ed, 4-l(), seeded. Low herbs with entire leaves and panicled flowers. 

 Flowers 5-merous: petals none: styles 3: capsule 8-celled, several-seeded. 

 Prostrate annual with entire verticillate leases and axillary flowers. 

 MollugoinFicoidece. 



*!■ ■"• Fruit lobed or winged: ovules 1 or 2 in each cell, pendulous. . 

 = Flowers slightly irregular. 



17 Geranlaceae. Sepals 5, imbricated in the bud : petals 5, rnostly- imbri- 



cated : stamens mostly 10 : styles 5, coherent to an axis at length separ- 

 ating from it : capsule 5-ceIled, the cells 2-oviiled but only 1 maturing. 

 Herbs with opposite stipulate leaves and long-beaked carpels. 

 = = Flowers regular. 



18 Limnanthaceae. Flowers 5-merous : sepals valvate and petals convo- 



lute in the bud : carpels fleshy, indehiscent, 1-ovuled. Tender annuals 



