fosacee—Rubus. 147 
neath. Flowers very large, purplish rose. Fruit orange-red. 
This is a very showy plant, from North America. 
4, R. spectabilis.—An unarmed or spiny shrub about 6 feet 
high. Leaves dense, ternate or trilobate; leaflets or lobes 
serrulate. Flowers bright red, axillary, solitary, on long 
pendulous peduncles. Fruit orange-red. Native of North- 
western America. 
5. R. drcticus.—This is an interesting little species about 
6 inches high, with trifoliolate leaves and deep red flowers. 
Arctic regions. 
Trips 1V.—POTENTILLE SE. 
Calyx persistent, bracteolate. Carpels usually numerous, 
with one ascending seed in each. 
6. GEUM. 
Perennial herbs with tufted pinnate radical leaves, the 
terminal lobe very large. These plants differ from the 
Potentillas in their pinnate leaves and elongated styles after 
flowering. About thirty species, from temperate regions of 
both hemispheres. Name from yevw, to stimulate, from the 
aromatic roots. 
1. G. Chiloénse, syn. G. coceineum of Lindley.—An erect 
branching herb about 2 feet high. Flowers in terminal leafy 
branched loose panicles about 14 inch in diameter. There 
are two varieties, one with bright scarlet, and the other with 
dark crimson flowers; both of them very pretty where there is 
plenty of space. Native of Chiloe. 
7. POTENTILLA. 
Herbs or rarely shrubs, those in general cultivation with 
digitate leaves. Stipules adnate to the petiole. Flowers 
showy, white, yellow, crimson, or scarlet. Calyx with 5 or 4 
bracteoles, and as many sepals, valvate in bud. Petals of the 
same number. Stamens many. Styles not elongating after 
flowering. About 120 species, nearly all within the north 
temperate zune, a few on the mountains of the tropics, and 
two in the south. So named from potens, powerful, effective, 
from their reputed medicinal properties. 
1. P. atrosanguinea.—A hairy branching herbaceous plant 
about 2 feet high with petiolate digitately trifoliolate leaves ; 
L2 
