Manual of the Botany of the Northern United States: Including Virginia, Kentucky, and All East of the Mississippi

1-celled 2-lipped 3-lobed 5-cleft Achenia achenium acute anthers apex awl-shaped awned axillary axils base beak bracts branches bristles calyx carpels cell clusters common corolla corymbed cotyledons culm cymes deciduous dense downy drupe elongated entire erect fertile flowers filaments flat fleshy fruit glabrous globular glumes hairy heads heart-shaped herbs Illinois imbricated indusium involucre lanceolate leaflets leafy leaves ovate length linear lobes longer lower palea many-flowered many-seeded margins membranaceous Michx minute Muhl naked Name narrow nearly northward Nutt oblong oblong-lanceolate obovate obtuse oval ovary ovate-lanceolate ovoid ovules pale panicle Pappus pedicels peduncles Penn perennial Perianth perigynia petals petioles pinnate pistillate plant pods pubescent purple Pursh racemes rarely rays scales scape Seeds sepals serrate sessile sheaths short shorter showy shrubs simple slender smooth solitary species spikelets spikes spreading stalk Stamens Stem sterile stigma style summit tapering terminal toothed Torr tube umbel upper whorls Wisconsin woods yellow