|Common Name:||Bluebur, Stickweed, Stickseed, Bristly Stickseed|
|Classification/Rank:||Aggressive or Under Bio-control|
|Method of Transportation:|
• annual herb from a taproot; grows 10 to 80 cm tall
• stems short, straight, usually branched, appressed-hairy throughout
• basal leaves broadly lance shaped; stem leaves narrower in shape, reduced upwards, unstalked, entire, alternate
• flowers blue with 5 yellow bulges at the throat; inflorescence of narrow, elongating clusters with bracts throughout
Similar species: Western Bluebur (Lappula occidentalis) is a weedy native annual of western North America. Western bluebur has 1 row of hooked prickles on the seeds while Bluebur have 2 rows. Both species are also similar to the native species Stick-seed (Hackelia floribunda).
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