
Flower profile
Sickletop lousewort
Pedicularis racemosa
Sickletop lousewort is a wildflower that USDA PLANTS lists as native in the lower 48 states. It's on our flower lists for 2 states, and across the U.S. it's most often seen in bloom in July–September.
*iNaturalist research-grade observations, as of October 17, 2026.
Quick look
Pedicularis racemosa is a species of flowering plant in the family Orobanchaceae known by the common names sickletop lousewort and leafy lousewort. It is native to western North America, where it grows in coniferous forests. This is a perennial herb producing several stems up to 80 centimetres (31 in) tall, greenish to dark red in color.
- It belongs to the Orobanchaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) / a subshrub with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 10 states. USDA PLANTS
- NatureServe lists it as native to Colorado and Wyoming. NatureServe
- In Colorado, most iNaturalist sightings of it in flower come in July–August. iNaturalist
- iNaturalist has 1,763 research-grade sightings of it in Colorado, ranking #93 among the 110 flowers on our Colorado list. iNaturalist
- iNaturalist has 528 research-grade sightings of it in Wyoming, ranking #53 among the 107 flowers on our Wyoming list. iNaturalist
Sickletop lousewort gift ideas
Handmade sickletop lousewort gifts from independent makers.
🌱 Sample spot. Handmade gift picks from independent shops will appear here once our shop partnership is approved. These cards are placeholders, not real products.
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Sickletop lousewort art print
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Sickletop lousewort greeting card
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Sickletop lousewort mug
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Sickletop lousewort earrings
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Sickletop lousewort embroidery pattern
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Sickletop lousewort sticker
When does it bloom?
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G5 Secure worldwide. NatureServe
- Colorado
- No list Colorado has no state law listing endangered or threatened plants, so we show NatureServe's Colorado ranks instead. NatureServe: S4, apparently secure in Colorado.
- Wyoming
- No list Wyoming has no state law listing endangered or threatened plants, so we show NatureServe's Wyoming ranks instead. NatureServe: S4, apparently secure in Wyoming.
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.
It isn't on the ASPCA plant list.
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records sickletop lousewort in 10 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Arizona, California, Colorado, Idaho, Montana, New Mexico, Oregon, Utah, Washington, Wyoming.
Colorado counties with USDA records: Archuleta, Boulder, Clear Creek, Delta, Dolores, Garfield, Gilpin, Grand, Gunnison, Hinsdale, Huerfano, Jackson, Larimer, Mesa, Mineral, Montezuma, Montrose, Ouray, Park, Pitkin, Routt, Saguache, San Juan, San Miguel, Summit.
Wyoming counties with USDA records: Albany, Carbon, Fremont, Lincoln, Park, Sheridan, Sublette, Teton.
More Colorado flowers
Sources
- USDA, NRCS. PLANTS Database, profile PERA.
- iNaturalist, Pedicularis racemosa: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Pedicularis racemosa (lead quoted under CC BY-SA 4.0).
- Colorado: Colorado noxious weed lists A, B and C (8 CCR 1206-2, eff. May 15, 2025).
- Wyoming: Wyoming state designated noxious weeds (W.S. 11-5-102(a)(xi)), as listed by the Wyoming Weed & Pest Council.
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Pedicularis racemosa (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Loren Cassin Sackett via iNaturalist · CC BY 4.0 · resized.


