Hypericum hypericoides

(St. Andrew's Cross)


Hypericum hypericoides, Bastrop State Park, Bastrop Co. 1568


Hypericum hypericoides, Bastrop State Park, Bastrop Co. 1566


Hypericum hypericoides, Bastrop State Park, Bastrop Co. 1589

Scientific Name Hypericum hypericoides (Ascyrum hypericoides) USDA PLANTS Symbol HYHY
Common Name St. Andrew's Cross ITIS Taxonomic Serial No. 503138
Family Hypericaceae (St. John's Wort) SEINet
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Description Habitat: Dry gravelly or sandy soils in sunny, open areas and fields.
Plant: Erect to sprawling, shrubby perennial 6 inches 3 feet tall and wide with leafy, branched red-brown stems with bark exfoliating in shreds.
Leaves: Opposite, linear to oblanceolate, 1/4 to 1-1/4 inches long and up to 1/3-inch wide and sessile.
Inflorescence: Solitary, yellow, 4-petal flowers 3/8 to 3/4-inch across presenting a cross or X-shape; petals obovate to narrowly oblong-elliptic; numerous stamens and 2 very short styles; outer 2 sepals are ovate to elliptic, about 1/2-inch long and wide with pointed or rounded tips.
Fruit: Narrow egg-shaped or cylindrical capsule, 1/3-inch or less long partially enclosed by the drying calyx.
Bloom Period: May to November.
References: Ascyrum hypericoides in "Manual of the Vascular Plants of Texas" by Correll and Johnston; "Wildflowers of Texas" by Michael Eason, Texas A&M, Flora of North America and SEINet.
BONAP Distribution Map

Map Color Key
Texas Status:

Banner photo of Lupinus ssp. by Rick Capozza, Austin TX

© Tom Lebsack 2023