Polygonaceae

Woodland pterostegia

Pterostegia drymarioides Fisch. & C.A.Mey.

Family: Polygonaceae
Genus: Pterostegia

Pet and kid safety: not checked yet. Check pet-safe plants

Woodland pterostegia (Pterostegia drymarioides) — FlowerPhoto: Irene, CC0, from iNaturalist

Is yours looking unwell? Scan your plant — free

Common names

By language (2)

English: Woodland pterostegia, Woodland threadstem
Portuguese: Pterostegia

Flowers

In flower: March to May (from 73 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Forb/herb
Lifespan: Annual
In the US and Canada: Lower 48 states: native

Photos

FlowerPhoto: Irene, CC0, from iNaturalist
FlowerPhoto: Ken-ichi Ueda, CC BY 4.0, from iNaturalist
FlowerPhoto: Ben Sims, CC0, from iNaturalist
FlowerPhoto: mel letterman, CC BY 4.0, from iNaturalist
Photo: Ken-ichi Ueda, CC BY 4.0, from iNaturalist
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons
Photo: John Cowles, CC0, from iNaturalist
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons
Photo: Ken-ichi Ueda, CC BY 4.0, from iNaturalist
Photo: Pinnacles National Park, CC BY 4.0, from Wikimedia Commons
Photo: Steve Matson, CC BY 4.0, from iNaturalist
Photo: Pinnacles National Park, CC BY 4.0, from Wikimedia Commons

Sources: classification from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.