SYNOPSIS OF THE NATURAL ORDERS. xv 



— Shrubs ; leaves alternate or opposite, stipules small ; flowers inconspi- 

 cuous, (p. 87.) 



24. Sapindace^b, Tribe Acerinejg. Flowers regular. Calyx 4-9-lobed, 

 and petals 4-9, both imbricate in bud. Stamens 8-12, inserted on the disk. 

 Ovary 2-lobed and -celled ; cells 2-ovuled. Fruit a samara ; cotyledons 

 plaited. — Trees or shrubs ; leaves opposite j flowers rather small, green, 

 (p. 88.) 



25. LeguminoSjE. Flowers irregular, papilionaceous. Stamens 10, 

 subhypogynous or inserted on the calyx-tube, all or 9 of them combined. 

 Ovary of 1 carpel. Fruit a legume. Albumen 0. — Herbs or shrubs ; leaves 

 usually alternate compound and stipulate, (p. 89.) 



26. Kosaces. i^Vowers regular. Calyx 4-5- (rarely 8-9-) lobed, im- 

 bricate or valvate in bud. Petals 4-5 (rarely 8-9 or 0), imbricate in bud. 

 Stamens usually indefinite, inserted on the calyx-tube or disk, incurved in 

 bud. Ovary of 1 or more free or connate 1- or more-ovuled carpels. Fruit 

 various. Albumen 0. — Herbs or shrubs ; leaves usually alternate, stipu- 

 late ; flowers often showy, (p. 113.) 



27. Saxifrages. Flowers regular. Calyx 4-5-lobed. Petals 4-5, 

 rarely 0, imbricate in bud. Stamens definite. Carpels fewer than the 

 petals, usually 2 connate ; placentas axile, rarely parietal. Fruit various. 

 Seeds albuminous. — Herbs or shrubs ; leaves opposite or alternate, stipu- 

 late or not ; flowers small, (p. 138.) 



28. Crassulaces. Flowers regular. Calyx 4-1 2-lobed. Petals i- 12. 

 Stamens twice as many as the petals (except ] Tillma). Carpels follicular, 

 usually 5, separate. — Herbs ; leaves succulent, exstipulate ; flowers small, 

 (p. 145.) 



29. Droseraces. Flowers regular Sepals and petals 5, imbricate in 

 bud. Stamens as many, hypogynous or perigynous. Ovary 1-celled ; 

 ovules many, parietal. Fruit capsular. Seeds albuminous. — Glandular 

 herbs ; leaves radical ; flowers small, white or pink. (p. 149.) 



31. Lythraces. Flowers regular. Calyx-lobes 3-6, valvate in bud. 

 Petals 3-6, crumpled in bud. Stamens definite. Ovary 2-6-celled, cells 

 many-ovuled. Capsule many-seeded. Seeds exalbuminous. — Herbs ; leaves 

 opposite or whorled, quite entire, exstipulate ; flowers often showy, 

 (p. 153.) 



** Ovary inferior. Stamens epigynous. 



30. Halorages. Flowers usually apetalous and 1-sexual. Calyx-lobes 

 2-4, valvate in bud, or 0. Stamens 1 or more, definite. Ovary 1-4-celled, 

 cells 1-ovuled. Seeds albuminous. — Herbs, often marsh or aquatic ; leaves 

 opposite alternate or whorled, exstipulate ; flowers very inconspicuous, 

 (p. 151.) 



32. Onagraries. Flowers usually regular. Calyx-lobes 2 or 4, valvate 

 n bud. Petals 2 or 4, twisted in bud. Stamens definite. Ovary 1-4- 

 elled, cells 1-many-seeded. Seeds exalbuminous. — Herbs ; leaves oppo- 

 ite or alternate, exstipulate; flowers often showy, (p. 155.) 



