Lamium amplexicaule henbit dead-nettle Lamiaceae LAAM*; Bx, sv (Torrey 2017); NY, bl (Stalter and Tang 2002); Q, j (Stalter and Lamont 2002); R, hs; 



Lamium (4/20140.

Lamium amplexicaule is an annual or winter annual herb 10-40 cm tall, from a taproot, branched at base, several weak stems, bases often reclining (decumbent). 

Leaves opposite, those of lower stem long-stalked, blade to 1.5 cm long and wide, rounded to kidney-shaped, surface puckered by impressed veins, margin coarsely round-toothed to lobed, leaves below flower clusters stalkless, clasping stem, usually shorter than flowers. 

Flowers purplish to 1.8 cm, bilaterally symmetrical, tubular, 2-lipped, hairy outside, tube straight, upper lip to 0.5 cm, deeply hood-shaped, with purple hairs, calyx hairy to 0.8 cm long, ovary superior, some plants also produce small, permanently closed flowers (cleistogamous); blooming and fruiting Mar.- Nov. Pollinated by bees (Lovell 1918). 

Fruit dry nutlets 0.2 cm. 

Wetland status: UPL. 

Frequency in NYC: Very infrequent. 

Origin: Eurasia, N. Africa. 

Habitat: Garden and field weed, especially in fertile soil.