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Adenostoma fasciculatum Hook. & Arn.

Chamise, greasewood

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassRosidaeRoses, legumes, proteas, dogwoods, hydrangeas, mistletoes, euphorbias, grapes, many more
OrderRosalesRose family and eight others
FamilyRosaceaeIncludes apples, apricots, plums, cherries, peaches, pears, raspberries, strawberries, almonds, roses, meadowsweets, photinias, firethorns, rowans, and hawthorns; many others
GenusAdenostomaFrom Greek aden, “gland,” and stoma, “mouth,” referring to five glands at the mouth of the sepals
SpeciesfasciculatumLatin for “bundles,” because leaves are attached to the stem in groups called “fasicles”

About plant names...

Chamise is native to California and northern Baja California.

Identification: This common densely branched woody shrub reaches as much as 13′ (4 m) in height. Bark is gray-brown in color. The leaves are small, ⅛-⅜″ (4-10 mm) long × 1/32″ (1 mm) wide, dark- or yellow-green, shiny, attached in fascicles, or tight clusters. They are highly flammable, owing to the presence of oils. (Despite this flammability, chamise recovers quickly after fires because its crown regenerates from its base.) Flowers are small, white, with 5 petals, in cone-shaped groups up to 1½-4½″ (4-12 cm) long.

Online References:


The Lady Bird Johnson Wildflower Center

The Anza-Borrego Desert Natural History Association

The USDA Forest Service's Fire Effects Information Database

Plants for a Future, a resource and information centre for edible and otherwise useful plants

The Jepson Manual


Adenostoma fasciculatum description by Thomas H. Kent, last updated 25 May 2020.

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Adenostoma fasciculatum (chamise, greasewood)

2/26/2010 · Torrey Pines State Park, La Jolla, Cali­fornia · ≈ 2 × 1½″ (5.9 × 3.9 cm)


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