Angiosperms: Dicotyledons

Rosaceae
Rose Family

• Stem: perennial; very short with basal leaves.
• Leaves: basal; pinnately divided; blades 6” by 2 1/2”; leaf stalks 2”, long-hairy; leaflets above the middle of the blade longer, outer ends of the leaflets long-toothed; hairy above and below.
• Inflorescence: umbel of three flowers at the end of the 6” to 12” hairy flower stalk.
• Flowers: petals white, nearly hidden by the red calyx; calyx limbs 1/2” long, broad-pointed, alternating with longer (5/8”) narrow bracts which elongate in fruit; stamens and pistils many; flowering from early to late May.
• Fruits: many; one-seeded, 1/16” long with the elongate hairy style attached; style reaching 1 1/2” in length, producing a ball of hairs extending from the calyx in fruit; fruiting begins in mid-May.
• Habitat: infrequent on moist prairies.
• Bibliography from Biodiversity Heritage Library
• Vascular Plants of Iowa