Psathyrotopsis scaposa [Asteraceae]

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Scientific Name Psathyrotopis scaposa USDA PLANTS Symbol
Common Name Naked Turtleback, Naked Brittlestem ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) SEINet
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Description Habitat: Calcareous in creosote-bush scrublands 2,300 to 4,200 ft in Big Bend region and a small portion of New Mexico.
Plant: Short annual, 8-15 inches tall.
Leaves: Ovate or triangular-shaped basal leaves on petioles; scalloped edges and wrinkled, somewhat hairy surfaces.
Inflorescence: Several rayless flowerheads on each stem, each with numerous very small 5-petal white florets that resemble Hymenopappus scabiosaeus (Old Plainsman).
Bloom Period: Spring to fall after rains.
References: “Little Big Bend” by Roy Morey and www.americansouthwest.net.
BONAP Distribution Map

Texas Status:

© Tom Lebsack 2021