Clematis lasiantha

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Clematis lasiantha
Clematis lasiantha.jpg
Clematis lasiantha in Mt. Diablo State Park, Contra Costa County, California
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Ranunculaceae
Genus: Clematis
Species: C. lasiantha
Binomial name
Clematis lasiantha

Clematis lasiantha, the pipestem clematis, is a creamy-white flowering liana vine, belonging to subgenus Clematis of the large Clematis genus.[1]


It is found on the Pacific coast of North America, from the San Francisco Bay Area southwards into Baja California. It extends as far east as the western foothills of the Sierra Nevada mountains, but does not grow in the Central Valley, nor at heights greater than about 2,000 metres (6,600 ft). It grows on hillsides, in chaparral, and in open woodland.


Clematis lasiantha, the pipestem clematis, flowers from January to June. Its leaves are 3-lobed, and generally grow groups of three to five leaflets, the largest leaves on the plant normally being between 3 and 5 cm in size. The pipestem clematis can be distinguished from the similar (but much more widely ranging) virgin's bower (Clematis ligusticifolia) by the fact that pipestems normally only have one flower on each stalk, and at most three, whereas the virgin's bower has multiple flowers on each stem. The pipestem also has more pistils in each flower, but since both species have many, this is not an easy criterion to apply. The virgin's bower is more likely to be found along streams or in other wet places, whereas the pipestem tolerates more open, drier places.


  1. ^ Keener, Carl S.; W. Michael Dennis (February 1982). "The Subgeneric Classification of Clematis (Ranunculaceae) in Temperate North America North of Mexico". Taxon. 31 (1): 37–44. doi:10.2307/1220586. JSTOR 1220586. 

Further reading[edit]

  • Peinado, M.; Alcaraz, F.; Aguirre, J. L.; Delgadillo, J.; Aguado, I. (1995). "Shrubland formations and associations in mediterranean-desert transitional zones of northwestern Baja California". Vegetatio. 117 (2): 165–179. doi:10.1007/BF00045507. ISSN 0042-3106. 
  • Peinado, M.; Macías, M. Á.; Ocaña-Peinado, F. M.; Aguirre, J. L.; Delgadillo, J. (2010). "Bioclimates and vegetation along the Pacific basin of Northwestern Mexico". Plant Ecology. 212 (2): 263–281. doi:10.1007/s11258-010-9820-z. ISSN 1385-0237. 
  • Xie, Lei; Li, Liang-Qian (2012). "Variation of pollen morphology, and its implications in the phylogeny of Clematis (Ranunculaceae)". Plant Systematics and Evolution. doi:10.1007/s00606-012-0648-y. ISSN 0378-2697. 
  • Timbrook, Jan (1990). "Ethnobotany of chumash indians, California, Based on Collections by John P. Harrington". Economic Botany. 44 (2): 236–253. doi:10.1007/BF02860489. ISSN 0013-0001. 
  • Sands, Anne (1980). Riparian forests in California: their ecology and conservation: a symposium. Berkeley: Division of Agricultural Sciences, University of California. ISBN 0-931876-41-9. 

External links[edit]