Pseudognaphalium stramineum (Kunth)

Family: Asteraceae, Tribe: Gnaphalieae

Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)

Gnaphalium stramineum Kunth, G. chilense Sprengel

Pertinent Common Names (particularly those used in California; go to GRIN for other common names)

cottonbatting plant

Primary Disseminule Type

fruit (usually with pappus missing)

Description (diagnostics are in brown)

Fruit a cypsela, oblong to mildly oblanceolate, plump to somewhat puckered, sometimes slightly dorsally curved base towards apex, mildly compressed, cross-section elliptic to oblong, 0.7–0.9 mm long x 0.2–0.3 mm wide x 0.1–0.2 mm thick. Surface brown (darker at the ends), glabrous, smooth or papillate-roughened, with a light sheen, with a thin, sometimes dark longitudinal ridge on the dorsal and ventral sides. Pappus of barbellate bristles, loosely coherent basally, easily deciduous, released in clusters or easily fragmented rings.

Style base missing or inconspicuous (pointy remnant) or prominent (lobed), whitish, apical scar ca. 0.1 mm across.

Fruit attachment scar basal, white, shiny, ring-like.

Similar Species

Similar Species Comparison Chart

Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)