Mimosa species

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Scientific Name Mimosa aculeaticarpa USDA PLANTS Symbol
MIAC3
Common Name Catclaw Mimosa ITIS Taxonomic Serial No.
507071
Family Fabaceae (Pea) SEINet Reference
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Description Dry, gravelly Hill Country type environment; dense, thicket-forming shrub up to 8 feet tall; angled, irregular, branches with recurved prickles; pink flower heads about 1 inch across. Photographed at Pace Bend Park, Travis County. Texas Status
Native
Scientific Name Mimosa emoryana USDA PLANTS Symbol
MIEM
Common Name Emory Mimosa ITIS Taxonomic Serial No.
26785
Family Fabaceae (Pea) Texas A&M Reference
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Description Desert environment, gravelly, sunny habitat; low shrub to 3-1/2 feet high with slim grooved stems with recurved prickles; small leaves with tiny hairs; pink flower heads less than 1 inch across. Found along the River Road, Big Bend. Texas Status
Native
Scientific Name Mimosa nuttallii USDA PLANTS Symbol
MINU6
Common Name Nuttall's Sensitive-briar, Catclaw Sensitive-briar ITIS Taxonomic Serial No.
507832
Family Fabaceae (Pea) Encyclopedia of Life Ref.
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Description Habitat: Sandy or silty soils in disturbed areas, grasslands, woodland openings.
Plant: Trailing, prostrate, branched perennial, ribbed stems 2 to 6 feet long with recurved (bent-back) prickles.
Leaves: Compound leaves on prickly stalks with 4 to 8 pairs, each 1 to 2 inches long, divided into 8 to 15 pairs of small leaflets 5/16-inch long that fold up when disturbed; each leaflet has a conspicuous midrib and sideribs beneath.
Inflorescence: Dense pink, ball-shaped inflorence 1/2 to 3/4-inch in diameter with many very small individual flowers each with 5 petals and 8 to 12 protruding stamens with pink filaments and yellow anthers.
Fruit: Mature fruit is nearly cylindrically-shaped.
References: Description excerpt from "Wildflowers of Texas" by Geyata Ajilsvgi and Kansas Wildflowers and Grasses.
Notes: Leaflets are sensitive to touch and will fold up when disturbed. Very similar to M. roemeriana, below except for conspicuous midribs on leaflets, fruit shape and ribbed stems.
Texas Status
Native
Scientific Name Mimosa roemeriana USDA PLANTS Symbol
MIRO6
Common Name Roemer's Mimosa, Sensitive-briar ITIS Taxonomic Serial No.
507833
Family Fabaceae (Pea) Wildflower Center Ref.
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Description Habitat: Common on rocky, chalky or sandy soils in North Central Texas and on the Edwards Plateau.
Plant: Trailing, prostrate, branched perennial, stems 12 to 40 inches long with recurved (bent-back) prickles; lower portion of stem rounded.
Leaves: Compound leaves on prickly stalks with 2 to 6 pairs divided into several pairs of small leaflets that fold up when disturbed; each leaflet is smooth beneath (no conspicuous midrib and sideribs).
Inflorescence: Dense pink, ball-shaped inflorence 3/4 to 1 inch in diameter with many very small individual flowers each with 5 petals and 8 to 12 protruding stamens with pink filaments and yellow anthers.
Fruit: Mature fruit noticeably flattened, 3 to 6 times wider than thick.
References: Description excerpt from Shinners & Mahler's Illustrated Flora of North Central Texas on pp. 677-682 and www.wildflower.org.
Notes: Leaflets are sensitive to touch and will fold up when disturbed. Very similar to M. nuttallii, above except for lack of conspicuous midribs on leaflets, fruit shape and rounded stems.
Texas Status
Native
Scientific Name Mimosa turneri USDA PLANTS Symbol
MITU
Common Name Desert Mimosa ITIS Taxonomic Serial No.
503839
Family Fabaceae (Pea) Texas A&M Reference
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Description Dry desert habitats, along washes and gullies; low-growing, spindly shrub with recurved prickles on stems; leaflets are small and hairless; pink puff-ball flower heads about 1/2-inch in diameter. Similar to M. emoryana, but according to Roy Morey ("Little Big Bend") M. turneri branches are streaked with broad, dark lines. Photographed at Ernst Tinaja, Big Bend National Park. Texas Status
Native



© Tom Lebsack 2017