Pyrrocoma species

Click on the images below to see larger versions.  

Scientific Name Pyrrocoma clementis var. clementis USDA PLANTS Symbol PYCLC
Common Name Tranquil Goldenweed ITIS Taxonomic Serial No. 529941
Family Asteraceae (Sunflower) SEINet
Reference
Click Here
Description Life zones and habitat: Montane to alpine (9200 to 13000 ft.); rocky hillsides, woodland openings and meadows.
Plant: Short perennial 8 to 12 inches tall, light green to reddish stems sparsely or densely covered with woolly hairs .
Leaves: Basal leaves narrowly lanceolate to oblanceolate, 2 to 5-1/2 inches long, fleshy, hairless, with entire, slightly undulate, sometimes denticulate, sparsely ciliate edges; stem leaves sessile, lanceolate to ovate, auriculate, 1-1/2 to 3 inches long, bases clasping, surfaces sparsely hairy and edges hairy.
Inflorescence: Solitary, composite flower heads 1 to 1-3/4 inches across with 20 to 55 yellow rays around the yellow center of 100+ disk florets; phyllaries are shaggy-hairy, narrowly obovate of different lengths, in several rows, colored green to purple.
Bloom Period: July and August.
References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America and www.americansouthwest.net
Note: All of the flower heads in the area of the images below exhibited an elliptical rather than circular center.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Pyrrocoma crocea var. crocea USDA PLANTS Symbol PYCRC
Common Name Curlyhead Goldenweed ITIS Taxonomic Serial No. 529943
Family Asteraceae (Sunflower) SEINet
Reference
Click Here
Description Life zones and habitat: Montane to subalpine (7000 to 11800 ft.); meadows, roadsides, openings and woodlands.
Plant: Erect, stout perennial up to 32 inches tall, lower portions of multiple stems are green and reddish above.
Leaves: Basal leaves are large, oblanceolate or spatulate to narrowly elliptic with stalks; stem leaves much smaller, lanceolate and clasping; both with smooth surfaces and edges.
Inflorescence: Usually solitary, large flower heads over 2 inches across with many (30 to 90) narrow orange/yellow rays around the yellow center of 100+ disk florets; thick green oblong to spatulate phyllaries beneath.
Bloom Period: June to September.
References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America and www.americansouthwest.net
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Pyrrocoma uniflora var. uniflora USDA PLANTS Symbol PYUNU
Common Name Plantain Goldenweed ITIS Taxonomic Serial No. 529957
Family Asteraceae (Sunflower) SEINet
Reference
Click Here
Description Life zones and habitat: Montane to alpine (8000 to 13800 ft.); various soils in wet or dry meadows and open woodlands.
Plant: Short perennial 3 to 16 inches tall with curved, one or more reddish, ascending or reclining stems; stems are nearly naked and may have shaggy, woolly hairs.
Leaves: Basal leaves are linear to elliptic, 2 to 4 inches long, and up to 5/8-inch wide; a few smaller alternate stem leaves that are similar in shape or lanceolate, and clasping; surfaces usually smooth or sparsely to densely covered with shaggy hairs; edges may be entire or have a few sharp teeth.
Inflorescence: Composite flower heads, usually solitary or in clusters of 2 to 4; 1 to 1-1/3 inches across with 18 to 50 yellow rays and 35 to 60 yellow disk florets; green phyllaries are shaggy-hairy, narrowly linear-lanceolate and of similar lengths in two rows.
Bloom Period: July and August.
References: "Flora of Colorado" by Jennifer Ackerfield, Flora of North America and American Southwest.
BONAP Distribution Map

Colorado Status:
Native

© Tom Lebsack 2021