xil SYNOPSIS OF THE NATURAL, ORDERS. 



B. Ovary one ; placentas 2 or more, parietal or on the dissepi- 



ments, not forming a central axis. 



I. Corolla regular. Pet. 4. 



14. PAPAVERACE^E. Sepals 2. Stain, many. 



18. CRUCIFER^E. Sepals 4. Stam. tetradynamous. 



II. Corolla regular. Pet. 5. 



39. DROSERACE^E. Sep. 5, equal, distinct, imbricate. Seeds 

 without an arillus. 



35. CISTACE^E. Sep. 5, distinct; 3 inner with a twisted aesti- 



vation ; 2 outer smaller or wanting. Seeds without an 

 arillus. 

 115. TAMARISCACE^E. Sep. 5, combined below. Seeds comose. 



III. Corolla regular. Pet. many. 



13. NYMPH^EACE^B. Pet. gradually passing into the stamens. 

 IV. Corolla irregular. 



16. FUMARIACE^E. Sep. 2 or 0. Stam. 6, in two bundles. 



36. VIOLACE.E. Sep. 5. Stam. 5 ; filaments free at the base. 



C. Ovary 1 ; placentas central. 



I. ^Estivation of calyx valvate or with distant lobes. 



56. MALVACEAE. Stam. monadelphous. 



58. TILIACE^E. Stam. distinct, hypogynous. 



69. RHAMNACE.E. Stam. distinct, opposite the pet. and equal- 

 ling them in number, perigynous. 



1 15. LYTHRACE^E. Stain, distinct, alternating with the pet. or 

 twice as many. 



II. ^Estivation of calyx imbricate. Cal. and cor. irregular. 

 67. BALSAMINACE.E. 



III. ./Estivation of gamosepalous calyx imbricate. Cor. regular. 



87- ROSACES (Tr. Amygdaleae). Fruit a drupe. Stam. epi- 

 gynous. 



42. CARYOPHYLLACE.E (Subord. Sileneae). Fr. a capsule. 



Stam. hypogynous. 



IV. Estivation of cal. imbricate ; sep. distinct or slightly con- 



nected below. Cor. regular. 

 * Ovary 1 -celled. 



121. PORTULACEJE. Sep. 2. Stam. opposite the petals. 



43. CARYOPHYLLACE^E (Subord. Alsineae). Sep. 3 5. Stam. 



10 or fewer, opposite the sepals. Stipules 0. 



122. PARONYCHIACE^E. Sep. 3 5. Stam 5, opposite the 



sepals. Stipules present. 



