Agrimonia rostellata Wallr.

Woodland Agrimony

Agrimonia rostellata plant

Family - Rosaceae

Habit - Perennial forb with both fibrous and tuberous-thickened roots.

Stems - To 100 cm, ascending to erect, sparsely pubescent and also glandular.

Agrimonia rostellata stemStem.

Leaves - Petiole bases with prominent stipules. Compound leaves with 3-9 primary leaflets, with small secondary leaflets interspersed. Primary leaflets elliptic, margins bluntly toothed, abaxial surface both glandular and pubescent.

Agrimonia rostellata stipulesStipules.

Agrimonia rostellata leaves

Inflorescence - Inflorescence axis both glandular and, usually, pubescent. Flowers irregularly spaced along axis.

Agrimonia rostellata inflorescence

Agrimonia rostellata inflorescenceInflorescence axis

Flowers - Stamens 10-15. Fruiting hypanthium 2.0-2.5 mm long (fruits 3.5-4.5 mm long), glandular, glabrous.

Agrimonia rostellata flowerFlower closeup.

Fruits - Formed from the hardened obconic hypanthium, ringed with hooked bristles which aid in dispersal.

Agrimonia rostellata fruitFruits.

Flowering - July - September.

Habitat - Slopes, ridges, open woods.

Origin - Native to U.S.

Other info. - This species is common throughout most of Missouri, apparently except for the northwest corner of the state. It ranges throughout most of the Midwest. A. rostellata is very similar to another species, A. pubescens Wallr., but the latter is more pubescent and lacks glands on the abaxial surface of the leaves. All of the agrimonies bear fruits which will accompany the woodland hiker hither and yon, velcroed to her apparel.

Photographs taken in Brown Summit, NC., 7-13-02 (DETenaglia); also at Victoria Glade, Jefferson County, MO, 8-5-2016 (SRTurner).