Asclepias linearis Scheele
Squat milkweed, slim milkweed
Squat milkweed is native to southeastern Texas and parts of Mexico, occuring rarely in California and New Mexico. The photos shown here, taken in New Mexico, may have been planted at the visitor center. They prefer dry prairies, rocky slopes, and mesas, in an altitude range of 1500-6500' (457-1981 m).
Plants: A slender upright plant, up to 20" (50 cm) in height, woody near the base. Broken leaves produce a milky sap.
Leaves: Smooth, linear, and opposite; 1-4" (2.5-10 cm) × ¼" (6.3 mm).
Flowers: Produces umbels of small white or greenish-white flowers. Each flower is <¼" (6.3 mm) around, and includes pink or purplish appendages. They appear from February to October.
Fruits: Upright pods are narrow and smooth, 2-4" (5-10 cm) long, with one to several pods per plant.
Asclepias linearis on southwestdesertflora.com
Asclepias linearis on SEINet—the Southwest Environmental Information Network
Asclepias linearis on www.asclepias.org
Asclepias linearis at the Lady Bird Johnson Wildflower Center
Asclepias linearis on www.inaturalist.org
Asclepias linearis description by Thomas H. Kent, last updated 25 May 2020.