xii 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. 
12, PapAVERACES. Sepals 2. Stam. numerous. 
16. CrucireRs&. Sepals 4. Stam. tetradynamous. 
II. Corolla regular. Pet. 5. 
33. Cistacea. Sep. 5, distinct, imbricate. Seeds without an 
arillus. 
112. Tamariscaces. Sep. 5, combined below. Seeds comose. 
III. Corolla regular. Pet. numerous. 
11. NympHzaces. Pet. gradually passing into the stamens. 
IV. Corolla irregular. 
14. Fumariacez. Sep. 2or0. Stam. 6, in two bundles. 
34, Viotacea&. Sep. 5. Stam. 5, filaments free at the base. 
C. Ovary 1; placentas central. 
I. Aistivation of calyx valvate or with distant lobes. 
54. Matvace#. Stam. monadelphous. 
56. Tiniacea&. Stam. distinct, hypogynous. 
66. RuaMNACEz. Stam. distinct, opposite the pet. and equal- 
ling them in number, perigynous. 
lll. Lyruracreaz. Stam. distinct, alternating with the pet. or 
twice as many. 
II. Astivation of calyx imbricate. Cal. and cor. irregular. 
64. BALSAMINACESR. 
ITI. Aistivation of gamosepalous calyx imbricate. Cor. regular. 
84. Rosacra# (Tr. Amygdalee). Fruit a drupe. Stam. epi- 
ous. 
41, CarYopHYLLACE& (Tr. Silenee). Fr. a capsule. Stam. 
hypogynous. 
IV, Mstivation of cal. imbricate; sep. distinct or slightly con- 
nected below. Cor. regular. 
* Ovary 1-celled. 
118. Portutacesw. Sep. 2. Stam. opposite the petals. 
41. CarvopHyLLAce& (Tr. Alsinee). Sep.3—5. Stam. 10 
or fewer, opposite the sepals. Stipules 0. 
118. Paronycuiacea. Sep. 3—5. Stam. 5, opposite the 
sepals. Stipules present. 
