18 SYNOPSIS OF ORDERS AND GENERA. 



Leaves alternate, stipules falling; 8-16 pairs of leaflets, small, crowded 

 oblong, blunt, unequal. Calyx funnel-sliaped, segments ovate, lance-shaped, 

 acute. Petals 3, 1 posterior, 2 lateral, yellowish-white, with red veins. 

 Stamens 3, filaments long and free. Ovary stalked, 1 -celled. Ovules many. 

 Style long and hooked. Pods long, flat, broad, curved, three strong woody 

 fibers extending from end to end, along the pulp with which the pod is filled. 

 Seeds 2-8, Large, flat. 



Tamarind, Tamarindus. 



Leaves alternate or fascicled, bipinnate, rhachis slender, tomentose, ending 

 in a gland with one also at the base. Flowers perfect or polygamous, small, 

 in heads or spikes. Calyx 4-5-toothed. Petals united below. Stamens free, 

 or united below, many longer than petals. Style thread-like. Pods 2-valved, 

 sometimes indehiscent, flat, or cyliudric. Seeds many, flat. 



Gum Arabic, Acacia. 



Order XXII. ROSACEA. 



Trees, shrubs, and herbs. Flowers perfect, regular, terminal, soli- 

 tary, cymose, or in umbels. Sepals 5 or less, united. Petals 5 or 0. 

 Stamens many, in series, free or cohering, inserted with the sepals 

 on the disk. Seeds 1 or few in each carpel. Leaves alternate and 

 stipulate. 



Leaves compound, of 1-2 pairs of leaflets and a terminal one, blunt at 

 base, sharp at apex, white or glaucous below, darker above. Calyx and 

 corolla 5-parted. Stamens many. Ovaries many. Akenes little drupes, 

 pulpy, aggregated on a succulent receptacle. 



Raspberry, Rubus. 



Leaves on long radical petioles, trifoliate, pubescent, dentate, lateral leaf- 

 lets oblique, nearly sessile. Flowers in cymes, stalk hairy. Calyx concave, 

 deeply cleft. Sepals 5, with 5 alternate bractlets. Petals obcordate, white, 

 large. Stamens many. Styles numerous, akenes naked on the surface of a 

 suhglolrular, heart-sliaped, pulpy, edible receptacle. 



Strawberry, Fragaria. 



Leaves 3-5-foliate. Stipules subulate. Leaflets ovate or oblong-lanceolate, 

 villous beneath, petioles and midrib aculeate. Flowers in a raceme, white. 

 Fruit ovoid, oblong, or cylindric, changing from green to red and black when 

 ripe. 



Blackberry, Rubus. 



Leaves oblong, linear or lanceolate, tapering to the base, serrate and glal)rous. 

 Flowers solitary or in twos or threes, appearing before the leaves. Fruit a 

 smooth drupe. Stone smooth, flattened. 



Plum, Prunus. 



Leaves conduplicate in the bud. Flowers with the leaves, in racemes or 

 umbels. Fruit smooth, globular. Stone smooth, globular. 



Cherry, Prunus. 

 Leaves convolute. Flowers solitary or in pairs. Fruit a drupe, soft, velvety. 

 Stone smooth, and flattened. 



Apricot, Prunvis. 



Leaves as above. Flowers solitary, rose-colored. Fruit a tomentose drupe. 

 Stone flattened and corrugated, or wrinkled. 



Peach, Prunus. 



