ANALYTICAL KEY TO FAMILIES OF ANGIOSPERMS. XIX 



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oo Vines SAPINDACEAE 609 



ooo Not vines. 



p Petals and sepals 2-3 . . LIMN ANTH ACE AE (in GERANIACEAE) 599 



pp Petals and sepals 5 ZYGOPHYLLACEAE 580 



cc WOODY PLANTS. 

 d Stamens 15 or more. 

 e Stamens monadelphous, at least at base. 



f Calyx valvate in the bud. MALVACEAE 617 



ff Calyx imbricated in the bud; stamens united only at base. 



THEACEAE (TERNSTROEMIACEAE) 623 

 ee Stamens distinct. 

 f Pistils several. 



g Stamens perigynous ROSACEAE 490 



gg Stamens hypogynous. 



h Receptacle hollow; leaves opposite CALYCANTHACEAE 435 



hh Receptacle not hollow; leaves alternate (except in Clematis), 

 i Fruit aggregate; trees; sepals and petals in several series of 3*3. 



MAGNOLIACEAE 409 

 ii Fruit separate. 



j Sepals and petals 5 ; shrubs RANUNCULACEAE 41 1 



jj Sepals 3, petals 6; shrubs and trees ANON ACE AE 410 



ff Pistil i. 



g Stamens perigynous DRUPACEAE (in ROSACEAE) 523 



gg Stamens hypogynous. 



h Leaves compound MIMOSACEAE (in LEGTJMINOSAE) 527 



hh Leaves simple. 



* Trees TILIACEAE 616 



ii Shrubs. 



j Leaves opposite; dehiscence of capsule mostly septicidal. 



HYPERICACEAE 624 



jj Leaves alternate above; dehiscence loculicidal CISTACEAE 630 



dd Stamens fewer than 15. 

 e Stamens perigynous. 



f Calyx-tube almost none; flowers small, greenish RHAMNACEAE 6n 



ff Calyx-tube crowned with a double or triple fringe. . . PASSIFLORACEAE 641 



fff Calyx-tube cylindric, naked LYTHRACEAE 648 



ee Stamens hypogynous. 

 / Flowers very irregular. 

 g Ovary i -celled. 

 h Upper petal inclosed by lower in bud. 



CAESALPINACEAE (in LEGUMINOSAE) 528 

 hh Lower petals inclosed by upper . .PAPILIONACEAE (in LEGUMINOSAE) 532 



gg Ovary 3-celled HIPPOCASTANACEAE (in SAPINDACEAE) 608 



ff Flowers regular or nearly so. 

 g Vines. 



h Pistils 2-many MENISPERMACEAE 434 



hh Pistil i. 



* Leaves crenulate, pointed, lanceolate CELASTRACEAE 605 



ii Leaves sharply dentate, lobed, compound or broad VITACEAE 613 



gg Not vines. 

 h Pistils several. 



* Flowers in pedunculate heads PLATANACEAE 490 



ii Flowers cymose or paniculate RUTACEAE 581 



hh Pistil one. 



* Style i (often several stigmas or branches) or none. 



j Leaves very small, 47 mm. long; evergreen low shrubs. 



EMPETRACEAE 598 

 J/ Leaves larger. 



k Anthers opening by apical valves; leaves or twigs usually some- 

 what spiny BERBERIDACEAE 433 



