KEY TO SPRING FLOWERS < 
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With one style or stigma; leaves pinnately com- 
pound. MIMOSACE2. -137 
Stamen filaments united at least at the base. 
Stamens 5 or 10. 
Leaves trifoliolate; stamens 10: OXALIDACEZ&. --91 
Leaves simple, entire; stamens 5. LINACEZ. --91 
Stamens numerous, the filaments forming a_ tube 
about the ovary and styles. MALVACEZ. _.98 
Flowers irregular, petals not all alike. 
Stamens many, separate. RANUNCULACEZ&. --61 
Stamens 10 or less, united or separate. 
Stamens 6, united in two sets; leaves dissected. 
FUMARIACEZ2. -- 68 
Stamens not 6; either more or less. 
Leaves pinnate or trifoliolate, rarely simple. 
LEGUMINOS4&. _136 
Leaves neither pinnate nor trifoliolate. 
Flowers in terminal clusters, leaves narrow, en- 
tire. POLYGALACEZ. --92 
Flowers axillary; leaves usually broad. 
Sepals 5, alike, green, often auricled; ovary 
1-celled with 3 parietal placentas. 
VIOLACEZ. --97 
Sepals 3, one petaloid, saccate, spurred; ovary 
5-celled. BALSAMINACEZ. --91 
Ovary inferior. 
Leaves simple, often deeply cut. 
Sepals, petals and stamens 5 each. SAXIFRAGACE. _149 
Sepals and petals 4 each, stamens usually 8. 
ONAGRACEZ4. _150 
Leaves compound, often much dissected; styles 2. 
UMBELLIFERZ. _165 
Petals united at least at the base, only slightly so in some Asclepi- 
adaceze and Primulacexw; stamen filaments often attached to 
the corolla. 
Ovary superior. 
Corolla firm, dry, translucent, not colored or petaloid; plants 
stemless, leaves basal. PLANTAGINACEZ. _103 
Corolla variously colored, soft, never dry and rigid. 
Stamens more than 5. 
Flowers irregular. 
Leaves compound or much dissected. 
Leaves pinnate or trifoliolate, rarely simple. 
LEGUMINOS2. _136 
Leaves finely dissected. PAPAVERACEZ2. __67 
Leaves narrow, simple, entire. POLYGALACEZ. __92 
Flowers regular; leaves trifoliolate. OXALIDACE. __91 
Stamens 5 or less in number. 
Flowers regular. 
Stamens opposite the corolla lobes, attached to center of 
lobe; ovary 1-celled with free central placenta. 
PRIMULACEZ. 
.102 
