South Dakota Native Plant Research
Asteraceae :Pseudognaphalium macounii

Asteraceae :Pseudognaphalium macounii


Download Seed: The seed of clammy cudweed is rough and around 2 mm long. (62 KB)

Download Seedling: Two month old clammy cudweed seedling grown in research greenhouse at SDSU. (51 KB)

Download Flowers (153 KB)

Family Name


Common Name

Macoun’s everlasting, Macoun’s cudweed


Pseudognaphalium macounii is an annual or biennial herb growing from a taproot with stiffly erect stems 30-100 cm tall, with stalked-glandular hairs throughout and the upper most parts covered with white wooly hairs. The simple alternate leaves are 3-10 cm long and 3--13 mm wide, lanceolate to oblanceolate, the margins curled under near the base. The inflorescence is a flat-topped cluster of campanulate heads 5-6 mm tall. The involucre is 4.5-5.5 mm long with bracts in 4--5 series, cream to straw colored. And there are many disk flowers in t series the out slender and the central dozen wider, the corollas white to yellow. The achenes are about 1 mm in length. Macoun’s everlasting blooms from July into October on open slopes, in meadows and floodplains in Lawrence and Pennington Counties in South Dakota.

Additional Notes

Macoun’s cudweed has a sweet smell and is an interesting plant that attracts butterflies but is not a visually impressive addition to a garden.

Horticulture Notes


Seed Collection: Collect in late summer.

Germination: No treatment needed

Soils: Gravelly or sandy.

Light: Full sun.

Water: Dry to moist

Asteraceae :Pseudognaphalium macounii