Hackelia diffusa
| Hackelia diffusa | |
|---|---|
| |
| Hackelia diffusa flowering near Wenatchee, Washington | |
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| Almost ripe nutlets of Hackelia diffusa var. arida | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Boraginales |
| Family: | Boraginaceae |
| Genus: | Hackelia |
| Species: | H. diffusa
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| Binomial name | |
| Hackelia diffusa | |
| Synonyms[1] | |
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Hackelia diffusa is a species of flowering plant in the family Boraginaceae known by the common name spreading stickseed.[1][2][3]
Distribution and habitat
The plant grows east of the Cascades in British Columbia, Washington and Oregon.[4] Its habitats include rocky cliffs, talus slopes, and shrub steppe.[5]
Description
Hackelia diffusa is a perennial herb from 20 to 70 cm (7.9 to 28 in) tall. The lower part of the plant is covered with spreading, stiff hairs, while the upper has appressed hairs.[4]
It has an inflorescence of false-racemes with numerous white flowers that have a yellow center. The boom period is from May to July. The fruits are clusters of four nutlets that have marginal and intramarginal prickles.[4]
References
- ^ a b "Hackelia diffusa (Douglas ex Lehm.) I.M.Johnst". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved June 14, 2025.
- ^ "Hackelia diffusa (Douglas ex Lehm.) I.M.Johnst". Catalogue of Life. Species 2000. n.d. Retrieved June 14, 2025.
- ^ USDA Plants database, accessed May 20, 2021- https://plants.usda.gov/home/plantProfile?symbol=HADI2
- ^ a b c "Burke Herbarium Image Collection". biology.burke.washington.edu.
- ^ "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2022-06-08.