How to Know the Wild Flowers

The book that taught America botany by color: find your flower under White, Yellow, Pink or Blue, and read its name, its haunts and its folklore — the first field guide organized the way people actually look.

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Arrow-Leaved Tear-Thumb

Polygonum sagittatum. Buckwheat Family.

Stem.--Four-angled; erect, or somewhat climbing by its prickles. Leaves.--Arrow-shaped; short-stemmed. Flowers.--White or pale pink; small; clustered. Calyx.--Usually five-parted; white or pale pink. Corolla.--None. Stamens.--Usually eight. Pistil.--One, with three styles. Fruit.--Sharply three-angled.

This rather noticeable plant is common in low grounds, bearing the name of "scratch-grass" in some places.

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