SYNOPTICAL KEY. — 3 
++ + Flowefs régular: leaves without stipules. 
Sepals and petals 5,: styles, 2-parted: capsule 8-valved, many seeded. 
Low herbs with the leaves all radical. Droseracew. | 
Sepals and petals 5: stamens indefinite: styles 3: capsule 3-valved. Low 
herbs with opposite leaves. Hypericum in Hypericacez.. 
*** Ovary of 2-several carpels and central placente: stamens most- 
ly strictly hypogynous: sepals persistent. : 
+ Flowers very irregular. : 
10 Polygalacew. Capsule compressed, narrowly winged, 2-celled, 2-seed- 
ed: stamens 4-8, mznadelphour (united into a tube that is split on the 
upper side), or distinct: anthers 1-celled, opening at the top. 
+ + Flowers regular: capsule 2-celled with free central placente: 
embryo curved around central albumen. 
11 Caryophyllacex. Flowers mostly 5-merous; petals sometimes none: 
stamens 10 orfewer: 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 without stipules. 
12 Portulacacee. Sepals 2, 4-8 in Lewisia: petals 2-5or more: stamens 
few-many : style 2-cleft: ovules few or many ; capsule 2-3-valved or cir- 
cumscissile. 
+ + + Flowers regular: ovary 2-several celled. 
++ Capsule not lobed nor winged. 
= Stamens distinct or nearly so, not im fascicles. 
Sepals and petals 5, persistent: stamens many: style 5-lobed: capsule 5- 
celled, 5-valved, muny-seeded. Acaulescent marsh perennials with 
pitcher-shaped leaves and solitary flowers. Sarraceniacex. 
18 Elatiniucex. 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 Hypericaceex. 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 Malvacer. 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 Linacex. Flowers 5-merous: styles 2-5: capsule 2-5-valved, 4—10-cell- 
ed, 4-10,seeded. Low herbs with entire leaves and panicled flowers. 
Flowers 5-merous: petals none: styles 3: capsule 3-celled, several-seeded. 
Prostrate annual with entire verticillate leaves and axillary flowers. 
Mollugo in Ficoidee. 
++ ++ Fruit lobed or winged: ovules | or 2 in each cell, pendulous. 
+ = Plowers slightly irregular. — 
17 Geraniacee. Sepals 5; imbricated in the bud : petals'5; mostly imbri- 
cated: stamens mostly 10: styles 5, coherent to an axis at length separ- 
ating from it: capsule 5-celled, the cells 2-ovuled but only 1 maturing. 
Herbs with opposite stipulate leaves and long-beaked carpels. 
= = Flowers regular. ~ tx. 
18 Limnanthacee. Flowers 5-merous: sepals valvate and petals convo- 
lute in the bud: carpels fleshy, indehiscent, 1-ovuled.* Tender annuals 
