- Filaree, Redstem filaree, Common storksbill, Heronbill, Alfilaria, Pin-weed, Pin-grass
- An erect winter annual or biennial, 6-8 inches tall.
- from jointed nodes
- pinnately divided
- pubescent top and bottom
- upper leaves sessile
- often reddish
- often reddish
- flattened white hairs
- Magenta to purple five-petaled flowers growing in umbels. Sepals are light-green striped. Flowers are bristle tipped with silky hairs.
- beak-like brown fruit
- splits into 5 segments
- spirally coiled at maturity in dry conditions
- uncoiled in moist conditions
- Seeds: cylindrical, hairy, light brown-orange
- sandy soils
- seeds are dispersed through wind, water and through contaminated hay, manure and farm machinery
Key ID Features:
- sessile upper leaves
- magenta-purple flowers
- 5 petals
- green stripes
- silky hairs on tips
- Whitestem filaree (Erodium moschatum) and Carolina geranium (Geranium carolinianum) both resemble stork's bill. Whitestem filaree has broader and longer compound leaves with shallow cut leaflet. Carolina geranium has rounded and palmately veined leaves and outwardly coiled beaks at maturity.
- Stork's bill is considered invasive because of its ability to crowd out native plants and outcompete agricultural crops.
- On Nantucket, there was a massive population explosion of this species in 2006, mostly on disturbed soils.
Growth Form: Herb
Origin: Europe, Asia
Level of Invasiveness for Nantucket: Likely Invasive
Level of Invasiveness for Massachusetts: Not evaluated
Massachusetts Cultivation Restrictions: no