Texas Wildbuds

Asclepias viridis

(Green Antelope Horn)

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Asclepias viridis, Buescher State Park, Bastrop Co. 5966

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Asclepias viridis, Buescher State Park, Bastrop Co. 5962

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Asclepias viridis, Buescher State Park, Bastrop Co. 5965

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Asclepias viridis, Buescher State Park, Bastrop Co. 5960

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Asclepias viridis, Buescher State Park, Bastrop Co. 5969

Scientific Name Asclepias viridis USDA PLANTS Symbol ASVI2
Common Name Green Antelope Horn, Green Milkweed ITIS Taxonomic Serial No. 30323
Family Apocynaceae (Dogbane) SEINet
Reference		 Click Here
Description Habitat: Dry sandy or rocky limestone soils in open areas in prairies, pastures, glades, fields, ditchbanks, disturbed areas and roadsides.
Plant: Perennial with stout, ascending to spreading stems, multiple from base, to 24 inches long, sometimes with a few branches near the top; smooth or with sparse short hairs.
Leaves: Mostly alternate, ovate-lanceolate, 2 to 5 inches long, 1/2 to 2 inches wide; sessile or on short petioles up to 1/4-inch long; margins are entire; tips are pointed, rounded or notched; surfaces are smooth or with sparse fine hairs.
Inflorescence: A few short-stalked umbels at stem tips or arising from leaf axils, 3 to 5 inches wide each with 3 to 18 flowers; each flower is 5-parted, about 1/2 inch tall, on stalks 1/2 to 1 inch long; cream to pale green or greenish yellow corolla lobes are elliptic-lanceolate, smooth and curving upward, about twice as long as hoods; purplish hoods are club-shaped with arched tips; horns absent; calyx lobes below are lanceolate, green to purple-tinged, with minute pubescent hairs.
Bloom Period: March to September.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Michael Eason, Kansas Wildflowers and Grasses and Missouri Plants.		 BONAP Distribution Map

Map Color Key		 Texas Status:
Native
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Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2026

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