Angelica capitellata, synonymSphenosciadium capitellatum, is a species of flowering plant in the family Apiaceae.[1] When treated as Sphenosciadium capitellatum, it was the only species in the monotypic genus Sphenosciadium. It is known by the common names woollyhead parsnip,[2]ranger's buttons, button parsley, and swamp white heads.
It is a stout perennial herb growing from a tuberous root and producing an erect stem often exceeding 1 meter (3+1⁄2 feet) tall and sometimes reaching 2.1 m (7 ft) overall.[3] The stem and leaves are usually green but sometimes nearly white in color, smooth below but with rough hairs on the inflorescence. The leaves are 10–40 centimeters (4–15+1⁄2 inches) long[3] and divided into several segments which bear widely spaced leaflets. The leaflets may also be intricately divided into small segments.
The inflorescence is a whitish compound umbel about 10 cm (4 in) across,[3] with many branches. It blooms from July to August.[3] The nearly spherical, headlike terminal umbellets contain many tiny white or purple-tinged flowers, whose protruding stamens make them appear very fuzzy in full bloom, as for the central umbels in the top right image.
Ranger's buttons plants are quite similar to the other large Umbelliferae that share similar habitats: Sierra angelica and cow parsnip, but each has a very differently shaped leaf, and the other two have umbellets with quite distinct flowers, in contrast to the tight balls on ranger's buttons.[4]
Toxicityedit
The species is included in Toxic Plants of North America (2001).[5]
Referencesedit
^ ab"Angelica capitellata (A.Gray) Spalik, Reduron & S.R.Downie". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2022-12-24.
^USDA, NRCS (n.d.). "Sphenosciadium capitellatum". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 25 November 2015.
^ abcdefSpellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 342. ISBN978-0-375-40233-3.
^Norman F. Weeden (1996), A Sierra Nevada Flora (4th ed.), Wilderness Press, ISBN0-89997-204-7
^George E. Burroughs; Ronald J. Tyrl (2001), Toxic Plants of North America (1st ed.), Iowa State Press, ISBN0-8138-2266-1
External linksedit
Media related to Angelica capitellata at Wikimedia Commons
USDA Plants Profile for Sphenosciadium capitellatum
Sphenosciadium capitellatum — U.C. Photo gallery
December 15, 2023
angelica, capitellata, synonym, sphenosciadium, capitellatum, species, flowering, plant, family, apiaceae, when, treated, sphenosciadium, capitellatum, only, species, monotypic, genus, sphenosciadium, known, common, names, woollyhead, parsnip, ranger, buttons,. Angelica capitellata synonym Sphenosciadium capitellatum is a species of flowering plant in the family Apiaceae 1 When treated as Sphenosciadium capitellatum it was the only species in the monotypic genus Sphenosciadium It is known by the common names woollyhead parsnip 2 ranger s buttons button parsley and swamp white heads Angelica capitellataScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsClade AsteridsOrder ApialesFamily ApiaceaeGenus AngelicaSpecies A capitellataBinomial nameAngelica capitellata A Gray Spalik Reduron amp S R DownieSynonyms 1 Selinum capitellatum A Gray Benth amp Hook f ex S WatsonSphenosciadium capitellatum A GraySelinum capitellatum var scabrum MunzSelinum eryngiifolium GreeneSelinum validum CongdonSphenosciadium eryngiifolium Greene J M Coult amp Rose Contents 1 Description 2 Distribution and habitat 3 Toxicity 4 References 5 External linksDescription edit nbsp Doubly pinnate leaves of foliageIt is a stout perennial herb growing from a tuberous root and producing an erect stem often exceeding 1 meter 3 1 2 feet tall and sometimes reaching 2 1 m 7 ft overall 3 The stem and leaves are usually green but sometimes nearly white in color smooth below but with rough hairs on the inflorescence The leaves are 10 40 centimeters 4 15 1 2 inches long 3 and divided into several segments which bear widely spaced leaflets The leaflets may also be intricately divided into small segments The inflorescence is a whitish compound umbel about 10 cm 4 in across 3 with many branches It blooms from July to August 3 The nearly spherical headlike terminal umbellets contain many tiny white or purple tinged flowers whose protruding stamens make them appear very fuzzy in full bloom as for the central umbels in the top right image Distribution and habitat editThe plant is native to western North America from eastern Oregon and central Idaho through Nevada and southern California 3 reaching into Baja California It grows in moist habitat types such as creeksides and meadows 3 Ranger s buttons plants are quite similar to the other large Umbelliferae that share similar habitats Sierra angelica and cow parsnip but each has a very differently shaped leaf and the other two have umbellets with quite distinct flowers in contrast to the tight balls on ranger s buttons 4 Toxicity editThe species is included in Toxic Plants of North America 2001 5 References edit a b Angelica capitellata A Gray Spalik Reduron amp S R Downie Plants of the World Online Royal Botanic Gardens Kew Retrieved 2022 12 24 USDA NRCS n d Sphenosciadium capitellatum The PLANTS Database plants usda gov Greensboro North Carolina National Plant Data Team Retrieved 25 November 2015 a b c d e f Spellenberg Richard 2001 1979 National Audubon Society Field Guide to North American Wildflowers Western Region rev ed Knopf p 342 ISBN 978 0 375 40233 3 Norman F Weeden 1996 A Sierra Nevada Flora 4th ed Wilderness Press ISBN 0 89997 204 7 George E Burroughs Ronald J Tyrl 2001 Toxic Plants of North America 1st ed Iowa State Press ISBN 0 8138 2266 1External links edit nbsp Media related to Angelica capitellata at Wikimedia Commons Jepson Manual Treatment Sphenosciadium capitellatum USDA Plants Profile for Sphenosciadium capitellatum Sphenosciadium capitellatum U C Photo gallery Retrieved from https en wikipedia org w index php title Angelica capitellata amp oldid 1140242577, wikipedia, wiki, book, books, library,
