8 KEY TO ORDERS. 



Leaves trifoliate, radical, petioles long. Sepals 5 with 5 alternate bractlets. 

 Petals white. Stamens and pistils many. Fruit a heart-shaped edible receptacle. 



Fragaria in Bosaceae. 

 Leaves compound in 2-3 pairs and a terminal one. Fruit an aggregation of 

 little drupes on a dry receptacle. In the blackberry the receptacle is succulent and 

 edible. 



Rubus (raspberry and blackberry) in Rosaceae. 



Leaves alternate. Flowers in racemes. Fruit a smooth drupe stone or pit 

 flattened, 



Prunus (plum) in Rosaceae. 

 Leaves alternate. Flowers in twos and threes or solitary. Fruit an ovoid drupe. 

 Stone smooth. 



Prunus (plum and apricot) in Rosacese. 

 Flowers in racemes. Fruit a smooth globular or heart-shaped drupe. Stone 

 smooth, globular. 



Prunus (cherry) in Rosaceae. 

 Leaves appearing after the flowers. Fruit a tomentose drupe, ovoid. Stone fur- 

 I'owed or wrinkled. 



Prunus (peach and almond) in Rosaceae. 



Leaves ovate, crenate, serrate, woolly beneath, smooth above. Flowers in 

 corymbs. Fruit a fleshy pome. Carpels 2-5, inclosed in a fleshy calyx. 



Pyrus (apple and pear) in Rosaceae. 

 Leaves oblong, or broad ovate, blunt at base and sharp at apex. Carpels 5 or 

 more inclosed in the fleshy calyx. Fruit a fleshy, fragrant pome. 



Pyrus (quince) in Rosaceae. 



COHORT n. SYMPETALOUS DICOTYLEDONOUS ATIGIOSPERMS. 



Herbaceous Plants. 



Calyx and corolla present. 



Leaves alternate. Flowers crowded in an involucrate head composed usually of 

 a disc of yellow flowers, encircled by a ring of white, pink, or purple ones. 



Compositae. 

 Leaves alternate. Juice milky. Flowers perfect and regular, bell-shaped. 

 Limb 5-Iobed. Stamens 5, free. 



Campanulaceae. 



Stem twining or clambering. Leaves alternate. Calyx .5-lobed. Corolla bell- 

 shaped. Limb 5-lobed. Flowers regular, axillary. 



Convolvulaceae. 



Leaves alternate. Calyx and corolla 5-lobed. Stamens 5 on the corolla. Fruit 

 usually 2-celled, many seeded. 



Solanaceae. 



Leaves alternate. Calyx .5-lobed. Corolla 2-lipped, 5-lobed. Stamens 5, on 

 corolla tube. Flowers irregular. Fruit a driipe. 



Pedalineae. 



Hairy and rough. Leaves alternate. Calyx 5-parte(l. Corolla 5-lobed. Stamens 

 on the tube. Ovary 4-lobed. 



Borraginaoeae. 



Stems square. Leaves opposite and aromatic. Flowers irregular. Corolla 2- 

 lipped. Ovary 4-lobed. 



Iiabiatae, 



Leaves alternate. Flowers solitary. Ovary inferior, many-celled. Stamens 

 double the number of corolla lobes. 



Vacciniaceae. 



