Deinandra pallida (D.D. Keck)

   B.G. Baldwin
Family: Asteraceae, Tribe: Heliantheae

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

Hemizonia pallida D.D. Keck

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

Kern tarweed

Primary Disseminule Type


Description (diagnostics are in brown)

Fruit a cypsela, obcuneate to obovate, curved towards ventral side (dorsally gibbous, sometimes a distinct dorsal longitudinal rib is evident), cross-section ± trigonous, (1.8)2–2.5 mm long x 0.8–1.1 mm wide x 0.8–1.1 mm thick. Surface glabrous, irregularly lumpy (smoother fruits may be undeveloped or aborted), tan to brown to black with various markings, often darker on the dorsal side. Apex beaked, beak offset ventrally, ascending. Pappus none.

Style base cylindrical, whitish. Apical scar 0.3–0.4 mm across.

Fruit attachment scar basal but obliquely angled, light brown, a protrusion that can be easily damaged or knocked off of the fruit body, 0.1–0.4 mm across.

Similar Species

It is probably not possible to distinguish this species from Deinandra kelloggii based on disseminule alone. Also, compare to Centromadia pungens.

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)