Agrimonia rostellata Wallr.

Woodland Agrimony

Agrimonia rostellata plant

Family - Rosaceae

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 can be found throughout most of Missouri but is apparently absent from most of the northwest corner of the state. 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.

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


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