30 SPRING FLOWERS. 



** Sepals distinct or cohering only at the base ; (leaves with- 

 out stipules) . 



t Capsule opening in 4-5 valves. 



(21) Sagina — sepals and petals four or five, the latter entire, 



sometimes wanting ; styles four or five. 



ft Capsule opening in 8-10 teeth. 

 % Petals entire. 



(22) Arenaria — sepals and petals five each ; styles three, rarely 



four. 



(23) Moenchia — sepals and petals four each ; styles four. 



X% Petals toothed or jagged, not cleft. 



(24) Holosteiun — sepals and petals five each ; styles three, rarely 



four. 



XXX Petals lijid or cleft. 



(25) Cerastium — sepals and petals four or five; styles five, 



rarely four or three ; capsule opening at top with short 

 teeth. 



(26) Stellaria — sepals and petals five ; styles three, rarely five ; 



capsule opening halfway down. 



6. Geraniaceous Plants. Geraniace.e. 



(27) Gerardum — stamens ten, monadelphous ; carpels one-seeded. 



7. Oxalidaceous Plants. Oxalidace.e. 



(28) Oxalis — stamens ten ; ovary five-celled, the cells containing 



several seeds. 



8. Aceraceous Plants. Acerace^. 



(29) Acer — flowers polygamous ; calyx five-lobed ; stamens seven 



or nine, rarely five. 



