Speckled Alder - Alnus incana
MNPS Threat Rank
Shrubs to 4 m high with grayish-brown bark. Twigs finely pubescent with blunt or rounded winter buds. Leaf blades 3–8 cm long with doubly serrate margins, paler, pubescent on veins below. Inflorescence borne on twigs of previous season. Female catkins 1–2 cm at maturity. Fruit a nutlet without wing margins.
In MT we have subspecies tenuifolia
(Nutt.) Breitung (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)