X CONTENTS. 



CHAP. PAGE 



XVI. THE GARDEN VIOLET Viola tricolor. Lyrate-pinnatifid 



stipules. Auriculate sepals. Order VIOLACE^E. Species. 75 



XVII. CHICKWEED Stellaria. Nodes. Internodes. Centrifu- 

 gal inflorescence. Bifid petals. Free central placenta. 78 



XVIII. THE PINK Diantlms. Caudex. Caulis. The Calyx as 

 a flower-cup. Proterandrous flowers. Teratology. 

 Order CARYOPHYLLACE.E 80 



XIX. THE WILD GERANIUM. Nodes. Internodes. Stipules. Reg- 

 ma. Carpophore. Folded cotyledons. Herb Robert. 83 



XX. THE HORSE-SHOE GERANIUM Pelargonium. The Spur. 8G 



XXI. YELLOW WOOD SORREL Oxalis. Leaf trifoliate. Leaf- 

 let obcordate. The leaf -axils. Monadelphous stamens. 

 Contorted aestivation. Sleep of plants. The Order. ... 89 



XXII. JEWEL WEED Impatiens. Corolla irregular and spurred. 



Irritable fruit. Contrivances for scattering seeds 93 



XXIII. NASTURTIAN Tropaeolum. Peltate leaves. Spurred 



sepal. Unguiculate petals. The order GERANIACE^E. 95 



XXIV. SHEPHERD'S PURSE Capsella. Leaves amplexicaul. 



Flowers cruciform, tetradynamous. A silicle 89 



XXV. THE TOOTHROOT CRESS Cardamine. Asilique. Cotyle- 

 dons accumbent incumbent. Order CRUCIFER.E ... 101 

 XXVI. STRAWBERRY Fragaria. Scape. Cyme. Perigynous sta- 

 mens. Strawberry fruit. Quincuncial estivation. Hairs. 104 



XXVII. THE APPLE TREE Pyrus. Trunk. Wood. Medullary 

 rays. Annual layers. Food of plants. Circulation of the 

 sap. Ovary adherent. Fruit a pome. Seed. Germination. 107 



XXVIII. THE ROSE Rosa. History. The Prickles. Odd-pin- 

 nate leaves. Ovary inferior. Seed suspended. The 

 Hip. The Double Rose. The order ROSACES. Peach, 



Quince, Blackberry, Spirea, etc 112 



XXIX. THE PEA Pisum. Tendrils, their action. Papiliona- 

 ceous flower. Diadelphous stamens. Legume 117 



XXX. THE LOCUST TREE Robinia. Stipular spines. Sensi- 

 tiveness. The Sensitive Plant. The Moving Plant. 

 The order LEGUMINOS.E 121 



XXXI. THE EVENING PRIMROSE OZnothera. Leaves spirally 

 arranged. Root biennial. Calyx adherent, tubular. 



Flowers nocturnal . . 125 



XXXII. LADY'S EARDROPS Fuchsia. Angular pollen grains. 



Hybridization. Order ONAGRACE^E. Zauschneria. . . 128 



XXXIII. SWEET CICELY Osmorhiza. The axial root. Decom- 



pound leaves. Sheathing petioles. Compound um- 

 bel. Involucels. The cremocarp. Carpophore 131 



XXXIV. GOLDEN ALEXANDERS Carum. Ovary inferior. Ribs 



and vitee of the fruit. Oil tubes. Action of light. 

 The order UMBELLIFER^E 134 



