ANALYTICAL KEY TO FAMILIES OF ANGIOSPERMS. XV11 



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k Ovaries 2, sometimes united at the base SAXIFRAGACEAE 476 



kk Ovary i LYTHRACEAE 648 



y Ovules 1-4, or if many, then carpels more than 2. 

 k Style i. 



/ Pistils i -many, separate, i -celled ROSACEAE 490 



// Pistil i, 2-5-celled LYTHRACEAE 648 



kk Stylesa; pistil i .,.. r . CARYOPHYLLACEAE 387 



ee Stamens hypogynous. JJjj&Xl^H^: 

 f Stamens monodelphous or diadelphous, at least below. 

 g Flowers irregular. . 



h Corolla papilionaceous PAPILIONACEAE (in LEGUMINOSAE) 532 



hh Corolla not papilionaceous. 



* Corolla spurred. 



/ Ovary i-celled PAPAVERACEAE 437 



jj Ovary 5 -celled BALSAMINACEAE (in GERANIACEAE) 610 



ii Corolla not spurred. 



j Petals fringed; fruit glabrous POLYGALACEAE 582 



jj Petals naked; fruit spiny KRAMERIACEAE 531 



gg Flowers regular 

 h Ovary i-celled; placenta free-central ; stamens opposite the petals. 



PRIMULACEAE 713 

 hh Ovary 4-many-celled; stamens alternate with the petals. 



* Stamens united throughout, forming a central column around the 



pistil MALVACEAE 617 



ii Stamens united only at the base. 



j Stamens 10; leaves 3 foliolate . .OXALIDACEAE (in GERANIACEAE) 575 



jj Stamens 5; leaves simple LINACEAE 578 



ff Stamens separate. 

 g Pistils 2 many, distinct. 



h Leaves conspicuously sheathing; pinnately or palmately parallel- 

 veined; petals and sepals each 3 ALISMACEAE 53 



hh Leaves not conspicuously sheathing; netted- veined; petals rarely 3. 



* Aquatic or in muddy places; leaves peltate or deeply cordate. 



NYMPHAEACEAE 406 



ii Rarely aquatic; when so, with dissected leaves.. . RANUNCULACEAE 411 

 gg Pistil solitary. 

 h Ovary i -celled. 

 * Insectivorous plants; leaves covered with glandular tentacles. 



DROSERACEAE 470 

 ii Not insectivorous; no tentacles. 

 j Styles 2-9 or 2-o.-parted. 



k Sepals 2 (3) PORTULACACEAE 384 



kk Sepals 4 or 5, distinct or united. 



/ A fleshy cup-shaped glandular disk at base of ovary.-RESEDACEAE 469 

 // No disk. 

 m Ovules many. 



n Placenta parietal; foliage punctate HYPERICACEAE 624 



nn Placenta central; foliage not punctate. ..CARYOPHYLLACEAE 387 



mm Ovule one PLUMBAGINACEAE 719 



M Style i (stigmas 14). 



k Petals 3, moss-like herbs MAYACACEAE 234 



kk Petals 4-12, rarely fewer; not moss-like. 

 / Placentse 2-5 ; stamens alternate with petals. 

 m Calyx deciduous. 



n Sepals 2, or united; falling very early PAPAVERACEAE 437 



nn Sepals 4-8, falling while in flower. 



o Ovary stipitate or stamens 8 or more CAPPARIDACEAE 467 



oo Ovary sessile, stamens 6 CRUCLFERAE 443 



mm Calyx persistent. 

 n Flowers regular. 



