Mirabilis nyctaginea

(Heart-leaf Four O'clock


Mirabilis nyctaginea, Wildflower Center, Austin, Travis Co. 3802/3808


Mirabilis nyctaginea, Wildflower Center, Austin, Travis Co. 3811

Scientific Name Mirabilis nyctaginea USDA PLANTS Symbol MINY
Common Name Heart-leaf Four O'clock ITIS Taxonomic Serial No. 19655
Family Nyctaginaceae (Four O'clock) SEINet
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Description Habitat: Dry, sandy, calcarous soils on hillsides, pastures, disturbed areas.
Plant: Erect perennial 1 to 3 feet tall; usually solitary stems with forked branches, ridged, often purplish.
Leaves: Opposite, upward-pointing, ovate-lanceolate to cordate, 2 to 4-3/4 inches long and from less than 1 to 2-1/2 inches wide with pointed tips; lower leaves on petioles up to 3/4-inch long; surfaces smooth or nearly so.
Inflorescence: Forked terminal cluster of groups of pink bell-shaped blossoms, usually 3 blossoms per involucre on a hairy peduncle; flower about 1/2-inch across with 5 notched lobes and 3 to 5 protruding stamens with pink filaments and yellow anthers.
Bloom Period: April to November.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Geyata Ajilvsgi and SEINet.
BONAP Distribution Map

Map Color Key
Texas Status:

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024