Perityle species

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Scientific Name Perityle parryi USDA PLANTS Symbol
Common Name Heartleaf Rockdaisy, Parry's Rockdaisy ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) SEINet Reference
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Description Habitat: Rock crevices, igneous or limestone soils; 2300 to 6600 ft.
Plant: Upright or spreading perennial 4 to 30 inches tall; multiple branched stems.
Leaves: Stalked, cordate to subreniform green leaves with three shallow lobes and dull-toothed edges.
Inflorescence: Yellow composite flowerheads about 1/2-inch across with 12 to 18 rays; 60 to 100 disk florets.
Bloom Period: Year-around.
References: "Little Big Bend" by Roy Morey and Flora of North America.
Texas Status
Scientific Name Perityle vaseyi USDA PLANTS Symbol
Common Name Margined Rockdaisy ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) Reference
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Description Habitat: Found only in Big Bend; dry areas, clay soils.
Plant: Perennial clump up 20 inches tall; multiple branched stems with short, glandular hairs.
Leaves: Stalked, palmately three-lobed and hairy, clustered at the base and most of the way along the stems, up to 2-1/2 inches long.
Inflorescence: One to three yellow composite flowerheads 3/4-inch across with 12 to 18 rays, each with three shallow lobes at tips; 50 to 100 disc florets.
Bloom Period: February to November.
References: "Wildflowers of Texas" by Geyata Ajilvsgi and
Texas Status

© Tom Lebsack 2019