Calycadenia multiglandulosa

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Calycadenia multiglandulosa
Calycadenia multiglandulosa.jpg

Apparently Secure (NatureServe)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Calycadenia
Species: C. multiglandulosa
Binomial name
Calycadenia multiglandulosa
  • Calycadenia bicolor Greene
  • Calycadenia campestris Greene
  • Calycadenia cephalotes DC.
  • Calycadenia hispida (Greene) Greene
  • Hemizonia cephalotes (DC.) Greene
  • Hemizonia hispida Greene

Calycadenia multiglandulosa is a species of flowering plant in the sunflower family, known by the common names sticky calycadenia[2] and sticky western rosinweed.[3] It is endemic to California, where it is a common in the Coast Ranges and in the Sierra Nevada Foothills from Shasta County to Kern County.[4][5][6]

This is an annual herb producing an erect, hairy, glandular stem up to 70 centimeters (28 inches) tall. The leaves are linear in shape and up to 8 centimeters long. The inflorescence is a series of dense clusters of flower heads surrounded by long, narrow bracts covered in obvious bulbous glands. The sticky, glandular flower head has a center of several disc florets surrounded by a few white, yellow, or red ray florets. Each ray floret has three lobes at the tip, the middle lobe being shortest. The fruit is an achene; those developing from the disc florets have a pappus of scales.[4][5]


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