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Bransford, W.D. and Dolphia
Mimosa microphylla Dryand.
Littleleaf sensitive-briar, Little-leaf mimosa, Catclaw sensitive briar, Smooth-leaf sensitive briar
Synonym(s): Leptoglottis angustisiliqua, Leptoglottis chapmanii, Leptoglottis microphylla, Mimosa quadrivalvis var. angustata, Morongia angustata, Morongia microphylla, Morongia uncinata, Schrankia angustata, Schrankia microphylla, Schrankia uncinata
USDA Symbol: MIMI22
USDA Native Status: L48 (N)
Weak, sprawling stems, up to 3 ft. long, are armed with hooked prickles. Bi-pinnately compound leaves, having an airy appearance. The leaflets are sensitive to the touch if one brushes against them or touches them, they immediately fold up against each other, suggesting the name sensitive briar. They also close at night and in cloudy weather. The fragrant flowers look like small pink balls and grow along the stem at varying intervals. They have 4 or 5 sepals, 4 or 5 united petals, 8–10 pink or rose-purple stamens, and 1 pistilFlower heads occur on stalks from leaf axils. The fruit is a long, slender pod, densely covered with prickles.
Smooth-leaf Sensitive-brier is a member of the pea family (Fabaceae), which includes trees, shrubs, herbs, and vines with compound or occasionally simple leaves and flowers usually in clusters.
Plant CharacteristicsDuration: Perennial Habit: Herb Fruit: Size Class:
Bloom InformationBloom Color: Pink
Bloom Time: Apr , May , Jun , Jul
, VA Native Distribution: IL
& s.e. CO,
s. to TX Native Habitat:
Prairies; ravines; open woods
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry
Soil Description: Rocky or sandy, dry or well-drained soils
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
Fragrant Flowers: yes
Interesting Foliage: yes
Record Last Modified: 2013-12-16
Research By: TWC Staff