Virginia Tech Dendrology

twinberry Caprifoliaceae Lonicera involucrata (Richardson) Banks ex Spreng. Listen to the Latin symbol: LOIN5
Leaf: Opposite, simple, deciduous, ovate to elliptical, 1 1/2 to 5 inches long, entire margins, arcuate veins, green and smooth above and below.
Flower: Perfect, tubular or trumpet shaped, small (1/2 inch) and paired, surrounded by 2 bracts that turn red.
Fruit: Paired, purple to black berries about 1/4 inch in diameter.
Twig: Slender, light yellow-green and ribbed when young but turning reddish brown, opposite branching.
Bark: Yellowish-gray to gray-brown and shreddy.
Form: An upright deciduous shrub growing to 10 feet tall.
Looks like: American fly honeysuckle - red twinberry - Amur honeysuckle - Indian-plum
leaf flower fruit twig bark form1 map
Additional Range Information: Lonicera involucrata is native to North America. Range may be expanded by planting. See states reporting twinberry.
External Links: USDA Plants Database
All material © 2018 Virginia Tech Dept. of Forest Resources and Environmental Conservation; Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson; Silvics reprinted from Ag Handbook 654