8 POLYPETALZ. 
Styles 2 or 3: sepals 5: petals 5: stamens 5 or 10: leaves petioled. .Saxifragacess, 
Styles 2 to 5: sepals 5: petals 5: stamens 5: leaves seasile..... erate Linacg, 
Style 3-cleft: sepala 2: petals 5: fleshy leaves..................Portulacacess, 
Corolla irregular (petals not all alike): style one. 
Stamens 10, included by the cohering lower pair of petals ..... Leguminose, 
Stamens 5: anthers united: lower petal spurred........--++-++ «e+. Wiolacess, 
Stamens 6, united in 3's: petals 4, in pairs.......... ae ..++e+--Eumariacese, 
Stamens 6, unequal, distinct or 2 united. ........ceepeeececevecee Streptanthus, 
Stamens 6 to 8, united: ovary 2-celled: leaves entire Dalvie wintnes Polygalacess, 
a 
d. Herbs: leaves opposite, simple, except sn the last. 
Style 3-cleft: stamens 3 to 5: leaves a single pair.............. Portulacacem, 
Style none, stigmas 3: stamens 10 to 12: petals 6: leaves in 3’s..Papaveracem, 
Styles 3: flowers sessile: stamens 4 to 7: leaves revolute....... Frankeniaces, 
Styles 3: flowers in axillary clusters: stamens 3 to 5.......+- + ener eeee Mollugo, 
Styles 2 to 5: capsule l-celled: stamens 10 or 6...........-- Caryophylacesa, 
Styles 2: capsule 4-celled: stamens 6.,. gecce ence cee t erence eee e ec eees Linacess, 
Styles 4 or 5: small white flowers in terminal clusters.......... Saxifragaces, 
Style 1: stamens on the slightly cohering rotate petals........... Frimulaces, 
Styles and other flower parts each 2 to 5 (stamens rarely ee | Elatinaces, 
as many)...... sire sofonetaul svavevauaravene vaca vefehlersies ooataren shatoneress snes eisiece 
Styles or stigmas 5; 5 akenes separating when ripe.......-....-.Geraniacess, 
2. Ovary and fruit inferior or mainly so. 
Shrubs: sepals, petals and stamens each 4 or 5: leaves siraple. 
Stamens opposite the small clawed petals: style 3-cleft.......... Rhamnaces, 
Sepals petaloid: ovary globose; styles or stigmas 2............. Saxifragaces, 
Sepals, petals and stamens 4 each: wers in cymes or in 
y honda with a white poe ae ‘4 bod - A ° eases i eee ery } Cornacere, 
Herbs, Sepals 5: petals 5: styles 2 to 5: leaves simple............. Saxifragacez, 
Flowers or flower clusters axillary. : 
Flower parts in 2’s or 4’s, small: aquatic: leaves whorled...... Haloragez, 
Flower parts in 4’s (rarely in 2’s or 6’s): style 1.......... .... Onagracess, 
Flowers monecious: climbing by tendrils. seeeeevceeeees.s Cucurbitacess, 
Flowers in umbels or heads not axillary. 
Flowers in umbels or heads: petals 5: stamens 5. 
Styles 2: fruit dry............... i icraesreleas +......Umbelliferss, 
Styles 2 to 5: fruit juicy..............0008 aires Bey aos Araliacess, 
Flowers in a head with involucre of 4 white leaves. .... +-......Cornacess, 
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