XXV1 
54, 
36. 
24, 
23. 
29. 
50, 
30. 
27. 
28. 
39. 
38. 
37. 
45, 
44, 
ol, 
KEY TO THE NATURAL ORDERS. 
++ Flowers irregular. 
Fuwartaces. Stamens 6, in 2 bundles. Fruit 1-celled. 
- Ponyeanacem. Stamens 8, in 2 bundles. Fruit 9-celled. 
-Lxcuuinoss. Stamens 10. Flowers papilionaceous. Fruit a legume. 
 Resepacex. Stamens 10 or more. Fruit 1-celled, opening at the top. 
Petals distinct. Stamens perigynous or epigynous. 
. Lecuminosm. Corolla papilionaceous. Ve 
. Rosacew, Corolla regular. Stamens numerous. Carpels more or less distinct. 
Leaves with stipules. 
* Ovary superior or half-inferior. 
+ Carpels several. 
Crassunacem. Carpels 2 or more, distinct. Leaves without stipules, 
++ Ovary solitary, 1-celled. 
. Porrutacem. Sepals2. Placenta central. Leaves without stipules. 
ov. 
LY, 
30. 
Inuecesracem. Sepals 5. Placenta central with several seeds, or fruit 1-seeded. 
Hyrrrtcacna (Parnassia). Sepals5, Placentas 4, parietal. Seeds many. 
Tamaricacem. A shrub. Placentas 3, parietal. Stigmas 3, feathery. 
+++ Ovary solitary, 2- or more-celled. 
Saxrrracacnxz. Herbs. Stamens twice as many as the petals. Styles 2, 
diverging. Seeds numerous, 
Ruamyacem. Shrubs. Stamens equal in number to the petals, and opposite to 
them. Fruit a berry. 
Crnasrracem. Ashrub. Stamens alternating with the petals. Fruita capsule, 
Lyrnracex. Herbs. Calyx valvate in eestivation, Style 1. 
Pyronacex. Herbs. Calyx imbricated in eestivation. Style 1. 
** Ovary inferior. 
t Ovary 1-celled. 
GrossuLartAcem. Ovary l-celled. Fruit a berry. Sepals and petals 4-5. 
Stamens 4—5, alternate with the petals. 
+} Ovary 2- or more-celled, 
OnaGRAcEx. Stamens 2, 4, or 8. Style 1. Leaves opposite or alternate. 
Petals twisted in zstivation. 
Havoracace®z, Aquatic herbs. Flowers monecious. Leaves whorled. 
Cornacum. Petals 4, valvate in estivation. Stamens 4, alternating with the 
petals. Leaves opposite. 
Aratiace®. An evergreen creeping shrub. Petals 5, valvate in sstivation. 
Umpeuiirer2. Herbs. Flowers in umbels. Petals 5. Stamens 5. Fruit 
splitting into 2 dry 1-seeded carpels. Leaves alternate. 
Petals united. 
* Ovary inferior or half-inferior. 
+ Flowers sessile, in close heads upon a disk within an involucrum (capitate). 
Composirm, Stamens 5; anthers united into a tube. 
Diesacem, Stamens 4; anthers separate, 
Tt Flowers not capitate. 
Cucursitacez. Aclimbing herb, Flowers dicecious, Ovules several in each cell. 

