valifolium.=

PRIMULACEAE, the Primrose Family

Herbs, with alternate or opposite simple leaves and regular flowers;
petals more or less united; stamens attached one in front of each petal;
ovary 1-celled with 1 style.

1a. Leaves all basal; flowers on leafless stalks --2.

1b. Stem-leaves present --5.

2a. Flowers nodding, the petals reflexed (3-6 dm. high; flowers
showy, white or pink, in spring)
=Shooting Star, Dodecatheon meadia.=

2b. Flowers erect or spreading; petals not reflexed --3.

3a. Corolla not longer than the calyx; flowers small and inconspicuous
(1 dm. high; flowers white or pink, spring)
=Androsace, Androsace occidentalis.=

3b. Corolla conspicuous, much longer than the calyx (flowers pink or
purple, summer) (Primrose) --4.

4a. Leaves white-mealy beneath (1-4 dm. high)
=Primrose, Primula farinosa.=

4b. Leaves green beneath (2 dm. high or less)
=Primrose, Primula mistassinica.=

5a. All the stem-leaves in one whorl just below the flower-cluster --6.

5b. Stem-leaves several or many, scattered over the stem --7.

6a. Stem-leaves about 1 cm. long --3a.

6b. Stem-leaves 5-10 cm. long =Star Flower, Trientalis americana.=

7a. Flowers red, blue, or white (summer) --8.

7b. Flowers yellow (summer) --9.

8a. Leaves opposite; flowers axillary (stems spreading, 1-4 dm.
long; flowers blue or red) =Pimpernel, Anagallis arvensis.=

8b. Leaves alternate; flowers racemose (1-4 dm. high; flowers
minute, white) =Water Pimpernel, Samolus floribundus.=

9a. Stem creeping =Moneywort, Lysimachia nummularia.=

9b. Stem erect (Loosestrife) --10.

10a. Flowers in dense spike-like racemes (3-8 dm. high)
=Loosestrife, Lysimachia thyrsiflora.=

10b. Flowers axillary or racemose (3-9 dm. high) --11.

11a. Corolla dotted or streaked with purple or brown; leaves punctate
with dark spots --12.

11b. Corolla plain yellow; leaves not dark-dotted --14.

12a. Flowers in racemes --13.

12b. Flowers all axillary =Loosestrife, Lysimachia quadrifolia.=

13a. Flowers all in racemes; leaves opposite or some of them alternate
=Loosestrife, Lysimachia terr