Texas Wildbuds
Hypericum crux-andreae
(St. Peter’s Wort)
Hypericum crux-andreae, Pitcher Plant Trail, Big Thicket, Tyler Co. 9868
Hypericum crux-andreae, Pitcher Plant Trail, Big Thicket, Tyler Co. 9863
Hypericum crux-andreae, Pitcher Plant Trail, Big Thicket, Tyler Co. 9857
| Scientific Name | Hypericum crux-andrea (Ascyrum stans) | USDA PLANTS Symbol | HYCR |
| Common Name | St. Peter's Wort | ITIS Taxonomic Serial No. | 503132 |
| Family | Hypericaceae (St. John's Wort) | SEINet Reference |
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| Description | Habitat: Sandy soils in bogs, swamp woods, pond and lake margins, moist grasslands and pine woodlands. Plant: Perennial with erect or nearly erect, usually unbranched stems, 1 to 4 feet tall. Leaves: Opposite, usually oblong-elliptic, 1/2 to 1-1/2 inches long and 1/4 to 5/8-inch wide; upper leaves are clasping. Inflorescence: Bright yellow flowers borne singly or in cymes of a few blossoms; each up to 1-1/4 inches wide with four obovate petals; many yellow, protruding stamens; outer 2 sepals are nearly round and cordate. Bloom Period: June to September. References: Ascyrum stans in "Manual of the Vascular Plants of Texas" by Correll and Johnston; Hypericum crux-andrea in "Wildflowers of Texas" by Michael Eason and Flora of North America. Note: Images here were taken in late November after flowers had dropped, but the round, outer sepals are still present. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2025