Asclepias syriaca or Common Milkweed is native to eastern North America and receives its name from the milky sap excreted from the stem and leaves when damaged. This full sun, drought tolerant plant blooms in early to mid-summer attracting a variety of insects including bumblebees, monarch butterflies and hummingbird moths. In the fall, the milkweed’s seed pods split open and release their seeds to be dispersed by the wind. This plant is prone to aphid pests and commonly occurs in fields, open woods, waste areas, roadsides and along railroad tracks. Milkweed species are important host plants for the monarch butterfly as it is the only plant the caterpillar will eat. Milkweed contains an alkaloid which makes the caterpillars bitter to eat. Predators of the monarch butterfly learn to recognize their bright patterning, remembering not to consume them due to their bitter taste. There are 18 Common Milkweeds with barcodes on BOLD. #Canada150 #Biodiversity150
Here’s the barcode sequence information for this species:
Title Image: Specimen KSR133-07 – Jokers Hill West, King Twp., Regional Municipality of York, Ontario – 04-July-2006 Photo Credit: University of Guelph, OAC Herbarium
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