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2026-03-12 20:17:12 UTC

JohnnyMilkweed on Nostr: There are two subspecies of Asclepias asperula. On the left is Asclepias asperula ...

There are two subspecies of Asclepias asperula.
On the left is Asclepias asperula asperula. On the right is Asclepias asperula capricornu.
The latter is popping up along the monarch migration route in Texas and Oklahoma. The other subspecies has a larger range across the Southwest. Both are important host plants for the monarch butterfly.