Flora Pittsburghensis

Asclepiadaceae

Milkweed Family

☛This family is now generally included as the subfamily Asclepiadoideae of the family Apocynaceae.

Butterfly Weed (Asclepias tuberosa). One of our brightest and most beloved wild flowers, and one of the very few bright orange flowers to decorate our roadsides. Butterfly-weed blooms at about the same time as the Daylily (Hemerocallis fulva), and if possible out-oranges it along our highways and byways. This is a favorite plant of the Monarch butterfly, itself bright orange to match its favorite flower.

Rose Milkweed (Asclepias incarnata). Also called Swamp Milkweed because of its preference for damp areas, but this is an adaptable plant, and it can be found at the edge of a moist woods as well. It is sometimes cultivated in gardens for its showy rose-colored flowers, which grow up on top where you can see them, rather than half-hidden like the flowers of Common Milkweed.

Common Milkweed (Asclepias syriaca). This distinctively odd-looking plant is a common sight along the road or at the edges of fields in late June. The plants stand straight and tall; the flowers form umbels in almost perfect spheres. From a distance their color resembles the color that used to be called “flesh” in children’s crayon boxes.


Index of Families.