SYNOPTICAL KEY. ^^- 



Capsule woody, 5-celled, 5-seeded. Flowers 5-merous. Seeds winged. A leafless spinose shmlj 



C'ANOTiA ill Rosaccce. 

 Ovary 3-celled : fruit a large leathery 3-valved 1-seeded pod. Trees, with opposite digitate serrate 



leaves, uo stipules, and showy panicled iiiegular flowers. .(E.sCLri.us in Sapindacew. 



(b.) Stamens clustered in fascicles or united into a tube. 



19. Hypericaceae, p. 80. Stamens numerous in 3 sets. Capsule 3-celled, many-seeded. Sepals 



and petals 5 : styles 3. Perennial herbs, with opposite entire punctate leaves, no stipules, 

 and yellow cjTiiose flowers. 



20. Malvaceae, p. 81. Stamens numerous, united into a tube : anthers 1 -celled. Carpels either 



in a ring, 1 - few-seeded and at length separating, or forming a .5 - lO-ccUed many-seeded 

 capsule. Calyx valvate : petals 5, united at base. Herbs or shrabs, with alternate 

 _ stipulate leaves. 



21. Sterculiaceae, p. 87. Stamens 5, united into a tube : anthers 2-celled. Capsule 4 - 5-celled, 



few-seeded. Flowers 5-merous : calyx imbricate : petals none. Shrub, with alternate 

 leaves, and showy flowers. 



■H- ++ Fruit lobed or winged. Seeds 1 or 2 in the cells, pendulous : albumen little or none. 



23. Zygophyllaceae, p. 91. Capsule 5-10-lobed, -celled, and -seeded. Flowers 5-merous: 



stamens 10 : style 1, short : sepals mostly deciduous. Herbs or shrubs, \vith opposite 

 stipulate compound leaves (leaflets entire), and solitarv flowers. 



24. Geraniaceas, p. 92. Capsule 5-parted, -celled, and -s( .■.led. Flowers 5-merous : stamens 



mostly 10 : styles coherent to an axis, at Ln-tli separating from it. Herbs, with lobed 

 or compound toothed leaves, — opposite and stipulate, the carpels long-beaked, or alter- 

 nate and without stipules, the carpels not beaked. 



25. Rutaceae, p. 96. Fruit 2-celled, an orbicular samara or didymous capsule. Flowers 4-me- 



rous : style 1. Shrubs, with aromatic dotted alternate leaves, and no stipules. 



29. Sapindaceae, 105. Fruit a double samara. Floweis .lineious or polygamous, often apeta- 



lous. Trees, with palmately lobed or pinnate opposite serrate leaves, and no stipules. 

 Fruit a simple samara, usually 1-celled and 1-seeded. Flowers 4-rnerous, perfect or dia>cious : 

 petals ofteu none : stamens often 2 : style 1. Trees, with opposite pinnate leaves, and 

 no stipules. Fraxinus in Oleacece. 



* * * * Ovary compound, with central placentae. Stamens upon. a more or less perigTnous disk. 

 Flowers mostly polygamous or diajcious. Calyx persistent or the limb "deciduous. 

 Cells 1 -few-seeded. Seeds mostly erect or ascending and albuminous. 



26. Celastraceae, p. 98. Capsule 2 -5-celled and -lobed. Flowers perfect, 4 -5-merous : style 



very short. Seeds arillate. Shrubs, with simple opposite pinnately veined leaves, and 

 no stipules. 



27. Rhamnaceae, p. 99. Fruit beiTy- or drupe-like, or diy, 1 - 4-celled. Calyx valvate, the 4 



or 5 lobes alternate with as many stamens, deciduous : petals often none : style 2-4- 

 cleft or lobed. Shrubs, with simple alternate or opposite leaves, and small stipules. 



28. Vitaceae, p. 105. Fruit a 2-celled 2-4-seeded berry. Flowers 4 -5-merous: calyx mi- 



nute : petals valvate : the stamens opposite them. Woody vines, climbing by ten- 

 drils : leaves alternate, lobed. 



30. Anacardiaceae, p. 109. Drupes 1-celled, 1-seeded. Flowers mostly 5-merous : stigmas 3. 



Shrubs, with milky resinous juice, alternate simple or compound leaves, and no stipules. 

 Albumen little or none. 

 Fruit a bladdery 3-lohed several-seeded capsule. Flowers perfect, 5-merous. Shrubs with oppo- 

 site compound stipulate leaves. Staphtlea in Sapindaccce. 



B. Stamens perigynous (upon the calyx), or epigynous. 



* Ovary superior or nearly so. (See last gi-oup.) 



-f- Carpels solitary or distinct. Seed very rarely albuminous. 



31. Leguminosae, p. 111. Carpel solitary becoming a legume. Flowers mo.stly irregular (papili- 



onaceous) : stamens 10 (rarely fewer), mostly monadelphous or diadelphous. Herbs, 

 shrulis, or trees, with alternate stipulate simple or compound leaves. 



32. Rosaceae, p. 164. Carpels one to many, becoming akenes or sometimes 1 -2-seeded dni]ies 



(or coherent \\'ith the calyx into a 2 - several-celled pome). Flowers regular, mo.stly 

 5-merous, or the stamens usually numerous. Herbs, shrubs, or trees, with alternate 

 mostly stipulate simple or compound leaves. 



33. Calycanthaceae, p. 190. Carpels numerous, becoming akenes within a hollow r.eceptacle. 



Sepals, petals, and stamens indefinite. Aromatic shrubs, with opjwsite eiitii-e leaves, 

 and no stipules. 



