XXxviil 
65. 
66. 
57. 
55. 
59. 
56. 
51. 
81. 
85. 
86. 
36. 
. Onacracex. Stamens 4. Style 1. 
74. 
28. 
73. 
bS 
o> — 
76. 
75. 
77. 
80. 
24. 
oD. 
29. 
KEY TO THE NATURAL ORDERS. 
Prinvtacexz, Stamens opposite the petals. Fruit dry, 1-celled. Style 1. 
Prumpacrvacem. Fruit dry, 1-celled. Seed 1. Styles 5. A 
ConvonyuLAce®. Stamens alternate with the petals. Fruit dry, 1- or 2-celled. 
Seeds few. Style 1. 
GentraAnacex, Stamens alternate with the petals. Fruit dry, 1- or 2-celled, 
many-seeded. Leaves opposite. 
a eas Stamens alternate with the petals. Fruit dry, 2-celled, or nearly 
4-celled, many-seeded. Leaves alternate. 
PoremonrAces. Fruit dry, 3-celled. 
Monorropacem. Fruit dry, 4- or 5-celled. Plant scaly, leafless. 
Floral envelope (calyx) single or wanting. 
A. Barren and fertile flowers in catkins. 
. Myricacex. Monecious or diccious. Fruit a succulent drupe. 
. Betuntaces. Fruit dry. Monecious. 
. SaAuicacexz. Fruitdry. Diccious. 
B. Barren flowers only, in catkins. 
ELEAGNnacex. Ovary superior. Diccious. 
Curuuirerxz. Ovary inferior. Moncecious. 
Conirer%. Seed in cones, or surrounded by a fleshy involucrum. Leaves 
linear, needle-like. 
C. Flowers not in catkins. 
. Lorantuace®. An evergreen parasitic shrub. 
. Evrnorpiacexz. Flowers in terminal clusters, surrounded by bracts. Ovary 
stalked, with 3 one-seeded cells. Juice milky. 
* Ovary inferior. 
+ Cells many-seeded. 
SAXIFRAGACEH., Stamens 8-10. Styles 2. 
ARISTOLOCHIACES. Stamens 6-12. 
tt Cells 1-seeded. 
Hanorsacacex. Leaves whorled. Aquatic. 
SANTALACE%. Leaves alternate. Terrestrial. 
** Ovaries several, superior. 
. Ranuncunacexz. Stamens hypogynous. 
- Rosacex. Stamens perigynous. 
*** Ovary 1, superior, with 2 or more cells, 
t Monecious or divcious. 
EvrnorsiaAces. Terrestrial. Fruit capsular, of 2 or 3 one-seeded cells. 
Emrrrracex. Terrestrial. Fruit fleshy. Stamens 3. 
CauutricuAcum. Aquatic plants. Fruit of 4 one-seeded carpels. 
tt Flowers perfect. 
Utmacem. Trees. Stamens 5. Fruit dry, winged. 
Ruamnacex. Shrubs. Stamens4or5. Fruit a berry. 
OuEAcex. Trees. Stamens 2, 
Lyrnraces. Herbs. 
HE Ovary 1, superior, 1-celled. 
T Calyx coloured and petal-like. 
- Primunacex. Leaves without stipules. Stamens 5. 

