. Botanical and vegetation survey of Carter County, Montana, Bureau of Land Management-administered lands . Botany; Rare plants. by Janet Wingate SOLIDAGO PTARMICOIDES PRAIRIE ASTER Prairie Aster has stems that are 1-7 dm high and clustered on a woody-thickened, branched rootcrown. Leaves are alternate, glabrous, firm, and 3-veined. The narrowly lance-shaped leaves near the base of the plant have entire margins and are petiolate and up to 20 cm long, while those on the upper stem are shorter, strap-shaped, and lacking petioles. The 3-60 flower heads are borne in an open, flat-topped infloresce
. Botanical and vegetation survey of Carter County, Montana, Bureau of Land Management-administered lands . Botany; Rare plants. by Janet Wingate SOLIDAGO PTARMICOIDES PRAIRIE ASTER Prairie Aster has stems that are 1-7 dm high and clustered on a woody-thickened, branched rootcrown. Leaves are alternate, glabrous, firm, and 3-veined. The narrowly lance-shaped leaves near the base of the plant have entire margins and are petiolate and up to 20 cm long, while those on the upper stem are shorter, strap-shaped, and lacking petioles. The 3-60 flower heads are borne in an open, flat-topped inflorescence. The glabrous, overlapping involucral bracts of each head are 5-7 mm long, each with a greenish apex and a prominent, thickened midrib. The 10-25 rayflowers are white and 5-9 mm long, and the numerous disk flowers are white. The achene is glabrous and has a pappus of bristles that are thickened toward the top. Flowering August-September. This species differs from other SOLIDAGO in having white flowers, resembling an ASTER. It can be distinguished from the latter by its flat-topped inflorescence, its thickened, involucral bracts that are often blunt at the tips, the thickened pappus bristles, and 3-veined Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Vanderhorst, James P; Cooper, Stephen V; Heidel, Bonnie L; United States. Bureau of Land Management; Montana Natural Heritage Program. Helena, MT : Montana Natural Heritage Program
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Keywords: ., bookcentury1900, bookcollec, bookleafnumber227, booksubjectbotany
