Yellow hymenopappus

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Yellow hymenopappus disk florets

Yellow hymenopappus

Yellow hymenopappus

Yellow hymenopappus infloresence

Yellow hymenopappus

Yellow hymenopappus

Yellow hymenopappus leaves

Yellow hymenopappus

Yellow hymenopappus flowers

Yellow hymenopappus inflorescence

Yellow hymenopappus leaves

Yellow hymenopappus

Yellow hymenopappus

Yellow hymenopappus

Morphology

Stem

Erect, branched in upper 1/3, ribbed, arising singly from taproot.

Leaves

Alternate, stalked; basal rosette leaves twice pinnately-divided, 2.4 to 6 inches long, 1/2 to 3 inches wide; ultimate segments linear, to 4/5 inch long, to 1/4 inch wide, mostly smooth above, woolly below; stem leaves numerous, progressively reduced above.

Inflorescence

Cyme, congested, terminal; flowering stalks .4 to 2.4 inch long; heads 30-100, disk-like.

Flower

Involcural bracts 6-14, 1/6 to 1/4 inch long; ray florets absent; disk florets 30-70, bright yellow; corolla 1/10 to 1/8 inch long, tube sparsely to densely glandular, expanded above into bell-shaped throat.

Fruit

Achenes, 4-angled, about 1/6 inch long, angles pubescent, tipped with 18-20 translucent scales, enclosing small seed.

Ecology

Habitat

Dry prairies, plains, pastures, and roadsides; sandy soils.

Distribution

Southwest 1/5 of Kansas.

Additional Notes