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10. Sisymbriunm.—Siliqua linear. Valves 3- 
nerved, concave. Ovules in each cell 
1-seriate. 
11. Brassica.—Siliqua terete. Valves 3-5- 
nerved, concave. Ovules in each cell 
1-seriate. 
MONADELPHIA. 
I. Triandria. 
1. Sisyrinchium. 
Il. Pentandria. 
1. Erodium.—Stamens alternating with 
staminodia. 
2. Downingia.—Corolla gamopetalous, ir- 
regular. 
II. Octandria. 
1. Polygala. 
IV. Decandria. 
1. Erodium. — Alternate stamens sterile. 
Fruit 5 akenes with persistent styles. 
2. Geranium.—Stamens all fertile. Fruit 
5 akenes with persistent styles. 
3. Oxalis.—Styles 5. Fruit a 5-lobed cap- 
sule. 
4. Lupinus.—Corolla papilionaceous. 
5. Amorpha.—Corolla represented by a 
single petal. Shrub. 
