Baccharis glutinosa

Baccharis glutinosa is a species of flowering plant in the daisy family known by the common names saltmarsh baccharis and Douglas' falsewillow.[2]

Baccharis glutinosa
Humboldt Bay National Wildlife Refuge, California

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Baccharis
Species:
B. glutinosa
Binomial name
Baccharis glutinosa
Synonyms[1]
  • Baccharis douglasii DC.
  • Molina viscosa Ruiz & Pav.
  • Baccharis haenkei DC.
  • Baccharis viscosa Hook. & Arn.
  • Pingraea viscosa (Ruiz & Pav.) F.H. Hellw.
  • Baccharis viscosa (Ruiz & Pav.) Kuntze
  • Baccharis pingraea DC.

The species has a discontinuous distribution, found in western North America (California, southern Oregon, northern Baja California)[2][3] and in South America (Brazil, Bolivia, etc.). The North American populations were for many years listed as a separate species, B. douglasii,[2] but more recent studies suggest that the plants from the two continents are better regarded as one species.[4][5][6]

Description

Baccharis glutinosa is a rhizomatous perennial herb growing to heights between one and two meters. The lance-shaped leaves are up to about 12 centimeters long and have short winged petioles. The foliage and inflorescences are resinous and sticky.[2]

The plants are dioecious, with male plants producing clusters of up to 40 whitish staminate flowers and female plants bearing bunches of up to 150 fluffy whitish pistillate flowers with a hairlike pappus attached to each developing fruit.[2]

salt marsh, Morro Bay State Park, California

References
  1. Tropicos, Baccharis glutinosa Pers.
  2. Flora of North America, Saltmarsh baccharis, Douglas’s falsewillow, Baccharis douglasii de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 400. 1836.
  3. Biota of North America Program, 2014 county distribution map, Baccharis glutinosa
  4. Müller, J. 2006. Systematics of Baccharis (Compositae–Astereae) in Bolivia, including an overview of the genus. Systematic Botany Monographs 76: 1–341.
  5. Calflora taxon report, University of California, Baccharis glutinosa Pers., Marsh baccharis
  6. Jørgensen, P. M., M. H. Nee & S. G. Beck. (eds.) 2014. Catálogo de las plantas vasculares de Bolivia, Monographs in systematic botany from the Missouri Botanical Garden 127(1–2): i–viii, 1–1744. Missouri Botanical Garden Press, St. Louis.


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