FAMILIES OF PLANTS 
73 
Squaw currant (Rihes inehrians) has bright red berries, stems with¬ 
out spines or prickles, and tubular pink or white flowers more than 
three times as long as broad. 
Western black currant {Rites petiolare) has the leaves nearly 
smooth, with yellowish, waxy sessile glands scattered over the lower 
surface, long, many-flowered, erect racemes of small, short, white 
flowers, and black berries bearing glands like those on the leaves. 
American black currant (Rites americanum) has somewhat pu¬ 
bescent leaves, with yellowish, waxy, sessile glands on both surfaces, 
drooping racemes of a few greenish-yellow, tubular flowers, and 
black fruit devoid of waxy glands. 
ROSE FAMILY (ROSACEAE) 
A large and important family containing both herbs and shrubs, 
with alternate leaves and regular, perfect flowers. Besides the 
innumerable kinds of roses the family contains many other kinds of 
ornamental plants, as well as such fruits as strawberries, raspberries, 
and blackberries. 
1. Shrubs. 2. 
1. Herbs. 6. 
2. Flowers white. 3. 
2. Flowers red or pink. 5. 
2. Flowers yellow. Shrubby cinquefoil (Dasiophora fruticosa) _ (p. 7-0 
3. Stems prickly. American red raspberry ( Rubus strigosus) _(p. 74) 
3. Stems not prickly. 4. 
4. Pistils many. Whiteflowering raspberry ( Rubus parviflorus )___(p. 74) 
4. Pistils 5. Spiraea lucida. ___ (p. 74) 
4. Pistils 2, partly united. Mallow ninebark ( Physocarpus malvaceus )_(p. 74) 
5. Pistils many. Stems prickly. Rose (Rosa)-. _ (p. 77) 
5. Pistils 5. Stems not prickly. Spiraea densiflora ___ (p. 74) 
6. Flowers purplish. Prairie-smoke (Sieversia ciliata) _(p. 74) 
6. Flowers white. 7. 
6. Flowers yellow. 8. 
7. Leaves simple. Dryad (Dryas octopetala) _(p. 74) 
7. Leaves with 3 leaflets. Strawberry ( Fragaria )_(p. 75) 
7. Leaves pinnate. Drymocallis _(p. 75) 
8. Leaves mostly basal. 9. 
8. Stems leafy. 11. 
9. Leaflets 3. Sibbaldia procumbens _(p. 76) 
9. Leaflets more than 10. 10. 
10. Plants with long runners. Silverweed ( Argentina )_(p. 76) 
10. Plants without runners. Horkelia gordonii _(p. 76) 
11. Fruits smooth. 12. 
11. Fruits hairy. 13. 
12. Styles attached near the base of the ovary. Drymocallis _ (p. 75) 
12. Styles attached at the upper end of the ovary. Cinquefoil (Potentilla) _ (p. 76) 
13. Sepals reflexed (turned back). Avens (Geum) _(p. 77) 
13. Sepals not reflexed. Sieversia _ (p. 74) 
