with yellow flowers in summer)
=Stonecrop, Sedum acre.=

2b. Leaves 10-30 mm. long, flat (tufted plants 1-2 dm. high;
flowers white, in spring) =Stonecrop, Sedum ternatum.=

3a. Petals present, purple (2-5 dm. high; summer)
=Live-for-ever, Sedum purpureum.=

3b. Petals none (3-6 dm. high; summer)
=Ditch Stonecrop, Penthorum sedoides.=

SAXIFRAGACEAE, the Saxifrage Family

Herbs or shrubs, with alternate or opposite leaves; petals and sepals
each 5, or the petals none; stamens 5 or 10; styles or stigmas 2-4.

1a. Shrubs with lobed leaves (3-15 dm. high; flowers in late spring)
--2.

1b. Herbs --12.

2a. Stems thorny --3.

2b. Stems not thorny (Currant) --8.

3a. Flowers and fruits in racemes =Swamp Currant, Ribes lacustre.=

3b. Flowers and fruit in short clusters (Gooseberry) --4.

4a. Ovary and fruit prickly and bristly
=Gooseberry, Ribes cynosbati.=

4b. Ovary and fruit smooth, or sometimes a little glandular --5.

5a. Stamens equaling the ovate calyx-lobes in length, or a very little
longer --6.

5b. Stamens distinctly longer than the linear calyx-lobes --7.

6a. Leaves glabrous beneath, or nearly so
=Gooseberry, Ribes oxyacanthoides.=

6b. Leaves softly pubescent beneath
=Gooseberry, Ribes oxyacanthoides var. calcicola.=

7a. Flowers, including the stamens, about 15 mm. long
=Gooseberry, Ribes gracile.=

7b. Flowers, including the stamens, about 8 mm. long
=Gooseberry, Ribes rotundifolium.=

8a. Calyx prolonged above the ovary into a tube which is longer
than the sepals --9.

8b. Calyx-tube shorter than the ovary or none --10.

9a. Flowers greenish-yellow, inconspicuous; calyx-tube narrowly
bell-shape =Black Currant, Ribes floridum.=

9b. Flowers bright yellow, conspicuous; calyx-tube narrow, with
spreading lobes =Golden Currant, Ribes aureum.=

10a. Ovary and berry bristly with glandular hairs
=Skunk Currant, Ribes prostratum.=

10b. Ovary and fruit smooth, or with sessile glands --11.

11a. Le