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Chamisa, Rubber Rabbitbrush, Gray Rabbitbrush
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird
[formerly Chrysothamnus nauseosus (Pall. ex Pursh) Britt.]
Asteraceae (Sunflower Family)
▲ seedling
▲ ▼ young plants
▲ ▼ young plants
▲ closer view of stems, leaves
▲ mature plant, resuming new growth in spring/summer
▲ plant initiating flowering
▲▼ mature flowering plants
▲▼ mature flowering plants
▲▼ mature flowering plants
▲▼ mature flowering plants
▲▼ mature flowering plants
▲▼ plants in late bloom, entering seed production
▲▼ plants in late bloom, entering seed production
▲▼ closer view of inflorescences, flowers
▲▼ closer view of inflorescences, flowers
▲▼ closer view of inflorescences, flowers
▲▼ closer view of initiation of fruit and seed production (tan, feathery structures)
Ericameria nauseosa
(Pall. ex Pursh) G.L. Nesom & Baird [formerly
Chrysothamnus
nauseosus (Pall. ex Pursh) Britt.], Chamisa,
Rubber Rabbitbrush, Gray Rabbitbrush:
(Bayer Code:
CYTNA; US Code ERNA10)
·
U.S. native semi-woody perennial shrub that grows about
1 to 6 feet tall, with many thin, branching stems; leaves and stems are
greenish-gray or greenish-white due to many hairs
·
Leaves linear to needle-like, alternate, upward pointing along stems; older
drying/dried leaves often retained below green leaves near tip; leaves/stems
have strong (either rubber-like or pineapple-like) odor
·
Flowers are in heads are in mounded clusters at tips of stems; individual
flowers are about 0.5 inch diameter with no ray florets and 4-6 yellow disk
flowers per head
·
Bracts below the heads are in multiple rows, lanceolate with strong, raised
(keeled) midrib
·
Native to western U.S. (not in Missouri); is toxic to livestock, if consumed;
produces a sap that has rubber-like properties
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