Annuals or biennials (often sweetly fragrant), 40-90 cm; taprooted. Stems stipitate-glandular throughout (usually persistently lightly white-tomentose distally). Leaf blades (not crowded, internodes mostly 5+ mm) lanceolate to oblanceolate, 3-10 cm × 3-13 mm (distal linear), bases not clasping, decurrent 5-10 mm, margins flat to slightly revolute, faces weakly bicolor, abaxial tomentose, adaxial stipitate-glandular, otherwise glabrescent or glabrous. Heads in corymbiform arrays. Involucres campanulo-subglobose, 4.5-5.5 mm. Phyllaries in 4-5 series, stramineous to creamy (hyaline, shiny), ovate to ovate-oblong, glabrous. Pistillate florets 47-101(-156). Bisexual florets 5-12[-21]. Cypselae not ridged, ± papillate-roughened. Flowering July-Oct. Dry, open habitats, pastures, open woods or edges, roadsides; 50-2600(-3000) m; Alta., B.C., Man., N.B., N.S., Ont., P.E.I., Que., Sask.; Ariz., Calif., Colo., Conn., Idaho, Ill., Ind., Maine, Mass., Mich., Minn., Mont., N.H., N.Mex., N.Y., Ohio, Oreg., Pa., S.Dak., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.; Mexico. Pseudognaphalium macounii is recognized by its stipitate-glandular, proximally glabrescent stems, bicolor and decurrent leaves, relatively large and many-flowered heads, and hyaline, shiny phyllaries. Reports of P. macounii from Texas are based on specimens of P. viscosum.
FNA 2006, Kearney and Peebles 1969, McDougall 1973
Duration: Annual Nativity: Native Lifeform: Forb/Herb General: Herbaceous annuals or biennials to perennials, to 80 cm tall, stems stout, branching above, herbage wooly, sweet-smelling. Leaves: Alternate, not crowded, lanceolate to linear, 2-10 cm long, not clasping but decurrent on the stem, bright green and glandular-pubescent above, white-tomentose beneath, the margins entire. Flowers: Heads discoid, relatively large, the outer flowers slender and pistillate, the inner ones coarser and perfect, flowers all fertile, receptacles without leafy bracts, involucres 5-6 mm high, campanulate to sub-globose, phyllaries straw-colored to pale brown at the tips, membranaceous and shiny, in 4-5 series, ovate to oblong with acute tips, scarious throughout, strongly overlapping, the heads numerous in dense glomerules at branch tips. Fruits: Achenes not ridged but are warty. Pappus of capillary bristles. Ecology: Found in dry, open habitats, pastures, open woods or edges, roadsides, and open coniferous forests, from 150-8500 ft (45-2591 m); flowering July-October. Distribution: Canada south to west Virginia, Texas, Arizona, and California. Ethnobotany: Unknown Etymology: Pseudognaphalium is false gnaphalium, the former genus name, while macounii is named for the Irish-Canadian botanist John Macoun (1831-1920). Synonyms: Gnaphalium degurrens, G. macounii, Pseudognaphalium viscosum Editor: LCrumbacher 2011
Similar to no. 5 [Gnaphalium obtusifolium L.]; stem ±glandular-hairy, becoming woolly in the infl, rarely somewhat woolly to near the base, as well as glandular; lvs distinctly decurrent at base, the upper surface ±glandular-hairy, the lower woolly or sometimes glandular-hairy; fls mostly 60-120, 6-20 of them perfect; 2n=28. Open places; Que. to B.C., s. to W.Va., Tenn., and Mex. July- Sept. (G. viscosum, misapplied)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.