IV ANALYSIS. 



merous. Ovary composed of two united carpel?, stipitate. Fruit a 1-celled, 

 pod-shaped capsule, many seeded. Herbaceous plants, with compound al- 

 ternate leaves. 



Genera. Cleomella p. 25. Gynandropsis p. 26. Polanisia p. 26. 



Order 12. Fumakiaceje. ■ Sepals 2, deciduous, small. Petals 4, cruciate, 

 one or both of the outer ones spurred or saccate at the base, the two inner 

 ones cohering at the apex, and enclosing the anthers. Stamens 6, in two 

 parcels. Ovary 1-celled, 2-valved. Style 1,'filiform. Fruit a nut or capsule, 

 if the former 2-seeded, if the latter many seeded. Herbaceous plants, with al- 

 ternate, ternately, or pinnately divided leaves. Flowers in cymes or racemes. 



Genera. Dielytra p. 19. Adlumia p. 19. Corydalis p. 19. Fumariap. 19. 



Order 13. CruciferjE. Sepals 4, deciduous, cruciate. Petals 4, cruciate, 

 alternate with the sepals- Stamens 6, letradynamous, the two lateral ones 

 shortest, inserted lower than the others. Fruit a silique, or silicle, 2-celled 

 from a spurious dissepiment. Herbaceous plants with alternate leaves often 

 divided. Flowers in terminal racemes or corymbs. 



Genera. Arabis p. 21. Cardamine p. 21. Dentaria p. 20. Nasturtium 

 p. 21 Leavenvvorthia p. 22. Sisymbrium p 22. Erysimum p. 22. Warea 

 p. 23. Sinapis p. 23. Selenia p. 23. Vesicaria p. 24. Draba p. 24. Lepi- 

 dium p. 21. Thiaspi p. 327. Coronopus, p. 321. 



Order 15. Polygalace^. Sepals 5, persistent, irregular, the three exteri- 

 or ones smallest, the two inferior and lateral ones petaloid and larger. Sta- 

 mens 6-8, monadelphous. Petals 3, irregular, somewhat papilinaccous, with 

 the keel crested. Ovary 2-celled, with a solitary pendulous ovule in each 

 cell. Heibnceous plants, with eutire leaves. 



Genus. Polygala p. 26. 



Order 6. Rerberidace.b. Sepals in two rows 3-4-6 often surrounded by 

 petaloid scales. Petals equal or double the number of sepals, and opposite 

 them, generally appendaged at the base. Stamens usually 6, or a multiple 

 of that number. Ovary solitary, 1 celled. Style lateral. p>uit baccate or 

 capsular. Shrubs, or herbaceous plants. 



Genera. Berberis p 13. Leontice p. 13. Diphyllia p. 14. Jeffersonia p. 

 14. Podophyllum p. 14. 



Order 7. Cabombace^. Sepals 3-4, petaloid. Petals 3-4, alternate with 

 the sepals. Stamens 6, or numerous. Ovaries 2-18. Carpels terminated by 

 the style, 1-2-seeded. Aquatic plants, with floating peltate leaves, the sub- 

 mersed leaves with filiform lobes. 



Genera. Cabomba p. 15. Brasenia p. 15. 



(f) Flowers perf( ct. Stamens 10, somelimes fewer. Her- 



haceous jplants. 



Order 24. Geramaceje Sepals 5, ribbed. Petals 5, unguiculate, distinct. 

 Stamens 10, n.onadelphous. Ovary composed of 5 carpels. Styles 5. Car- 

 pels distinct in fruit, 1 or 2 seeded. Herbaceous plants, with leaves more or 

 less divided, with the stems swollen at the joints. 



Genus. Geranium p. 43. 



Order 21. Caryophyllaceje. Sepals 4-5, distinct, or united at the base. 

 Petals 4-5, unguiculate, inserted into the pedicel of the ovary, or destitute of 

 claws and inserted on a nearly perigynous disk. Stamens generally 10. 

 Ovary stipitate. Pistils 2-5. Capsule 1-celled, or imperfectly 2-5-celled. 

 Herbaceous plants i\'ith tumid nodes. Leaves opposite, ptuire. 



Genera. Molugo p. 325 Stiginap 39. Arenaria p. 39. Stellaria p. 40. 

 Cerastium p. 40. S.lene p. 41. Saponaria p. 41. 



Ord;r 20. Illecebrace^e. Sepals 5, persistent. Petals 5, or none, or 

 minute. Stamens 2-5. Ovary 1-celled, or imperfectly 2-5 celled Styles 

 2 5. Fruits 1-celled, 1 or many seeded. Herbaceous plants, with opposite 

 entire leaves. [See page vii.] 



Order 26. Oxaltdace^ Sepals 5, distinct, persistent. Petals 5, unguic- 

 ulate. Stamens 10, those alternate with the petals shortest. Styles 5. Cap- 



