Dicotyledons with Polypetalous Flowers — Rosacea ?. 
35 
III. SPIRHiACEHE.—Flowers regular. Carpels usually about 5, rarely solitary, free; style 
terminal. Ovules 1-2 or more, pendulous. Fruit usually follicular. 
Distribution. —Chiefly restricted to the North Temperate zone ; four genera are peculiar to Japan 
and China, and four to North America. 
One British Genus; Species, 2. 
IV. DRYADEH 5 (Tab. 28).—Flowers regular. Carpels usually 5 or more, inserted upon a 
convex disk, free; styles subterminal. Ovules 2 or 1. Fruit a head of achenes or drupels. 
Distribution. —Chiefly belonging to the North Temperate zone, with 4 or 5 genera penetrating 
into the Tropics. Two of the largest genera, Bramble {Rudies) and Potentilla , are cosmopolitan, though 
most numerous in cool regions. 
Number of British Genera, 7 ; Species, 20. 
V. POTERIE/E.—Flowers small, regular, usually apetalous. Stamens definite or indefinite. 
Carpels 1-3, free. Ovule 1. Fruit an achene inclosed within the dry persistent calyx-tube. 
Distribution. —Most abundant in the North Temperate zone and along mountain chains of the 
Tropics. The largest genus {Cliffortid) is almost restricted to the Cape of Good Hope. 
Number of British Genera, 4; Species, 7. 
VI. ROSEHE.—Flowers regular. Stamens indefinite. Carpels indefinite, free, inserted upon a 
hollow receptacle. Ovule 1, pendulous. Fruit-achenes inclosed in a succulent receptacle (“calyx- 
tube ”). 
