Aquatic and Wetland Vascular Plants of the Northern Great Plains
49. Asteraceae, the Aster Family
2. Aster L. -- Aster
8. Aster pubentior Cronq.
Stout, erect perennial 5-15 dm tall, from a thick rootstock; stem appressed-puberulent
mainly above. Leaves subsessile to short-petiolate, narrowly to broadly
elliptic or elliptic-ovate to elliptic-lanceolate, 4-14 cm long, 0.8-3(4) cm
wide, scabrous above, densely puberulent beneath, acute to acuminate, entire,
tapered to the subsessile or short-petiolate base. Heads usually many
(few in depauperate specimens), 1-1.5 cm across, in a terminal, often flat-topped,
corymbiform inflorescence; involucre 3-5 mm high, the bracts long-triangular
and acute, puberulent; rays 4-7, white, 5-8 mm long. Late Jul--Aug. Wet
meadows, springs and swampy or boggy places; occasional in nc and e ND, ne SD;
also one record from Cherry Co., NE; (n MI to Alta., s to IA and NE). A.
umbellatus Mill.