California Broom – stems, especially when leafless, resemble those of several Old World shrubs in the Pea family (e.g.Deerweed – deer like to strip the leaves from the stem (Heiple 2020).glaber (GLAY-ber) – Latin for “hairless”.Acmispon (ak-MIS-pon) – presumably from the Greek acme, “point” or “edge,” referring to the hook on the end of the fruit pod.Foliage used for house thatching and construction.Infusion of plant taken to support blood formation.Larval food source (host) for orange sulfur ( Collas eurytheme), bramble green hairstreak ( Callophrys perplexa viridis), and acmon blue ( Plebejus acmon) butterflies.Nectar collected by hummingbirds, bees, and other insects.Flowers and seeds eaten by many insects, birds, and rodents.Provides valuable forage for deer, especially in drought years or after fire (Montalvo 2017).Uses ( San Mateo County Parks prohibits removal of any natural material) Outside California, grows in Baja California, Mexico.See Calflora for statewide observations of this plant.Commonly in chaparral, coastal sand, and coastal sage scrub.Ovary superior (above the attachment of other flower parts).Yellow color ages to orange and red once pollinated (Ritter 2018).Characteristic Pea family flower is bilaterally-symmetric with a banner, wings, and keel.Inflorescence (flower arrangement) a group of 2-7 flowers, growing from the upper leaf axils.Each leaf is compound, with 3-6 oval leaflets.Alternate (1 leaf at each junction with stem).Numerous and branching, giving a bushy look.Eudicots are a major lineage of flowering plants see family for general characteristics.
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