Pyrrocoma racemosa var. paniculata

(Nuttall) Kartesz & Gandhi

Phytologia 71: 610. 1991.

Basionym: Homopappus paniculatus Nuttall Trans. Amer. Philos. Soc., n. s. 7: 331. 1840
Synonyms: Haplopappus paniculatus var. virgatus A. Gray Haplopappus racemosus subsp. brachycephalus (A. Nelson) H. M. Hall Haplopappus racemosus subsp. duriuscula (Greene) H. M. Hall Haplopappus racemosus subsp. glomeratus (Nuttall) H. M. Hall Haplopappus racemosus var. glomerellus A. Gray Haplopappus racemosus subsp. halophilus (Greene) H. M. Hall Haplopappus racemosus subsp. prionophyllus (Greene) H. M. Hall Haplopappus racemosus var. prionophyllus (Greene) S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 422.

Plants 20–75 cm. Stems glabrous. Leaves: basal blades oblanceolate to elliptic, 50–250 × 5–25 mm, rather thick and succulent, margins entire or denticulate, faces glabrous, often glaucous. Heads pedunculate or sessile, often crowded distally, in narrowly paniculiform, racemiform, or spiciform arrays. Involucres hemispheric, 6–8 × 8–12 mm. Phyllaries: bases pale, margins sometimes ciliate, apices erect, green, acute, faces glabrous. Cypsela faces glabrous or densely sericeous. 2n = 12, 24.

Phenology: Flowering Jul–Oct.
Habitat: Alkaline meadows, open fields, around hot springs and boggy areas
Elevation: 100–2500 m



Calif., Idaho, Nev., Oreg., Utah.


Variety paniculata is recognized by its relatively small involucres and glabrous phyllaries. This is the most variable variety and here includes a number of forms previously treated as separate varieties or subspecies. Both diploid and tetraploid races occur; there appears to be no corresponding morphologic differences (R. A. Mayes 1976).

Selected References


Lower Taxa

David J. Bogler +
(Nuttall) Kartesz & Gandhi +
Homopappus paniculatus +
Calif. +, Idaho +, Nev. +, Oreg. +  and Utah. +
100–2500 m +
Alkaline meadows, open fields, around hot springs and boggy areas +
Flowering Jul–Oct. +
Haplopappus paniculatus var. virgatus +, Haplopappus racemosus subsp. brachycephalus +, Haplopappus racemosus subsp. duriuscula +, Haplopappus racemosus subsp. glomeratus +, Haplopappus racemosus var. glomerellus +, Haplopappus racemosus subsp. halophilus +, Haplopappus racemosus subsp. prionophyllus +  and Haplopappus racemosus var. prionophyllus +
Pyrrocoma racemosa var. paniculata +
Pyrrocoma racemosa +
variety +