Robinia viscosa

Clammy locust is a medium-sized deciduous tree in the pea or Fabaceae family and is native to the mountains of North Carolina, in the southeastern United States It grows up to 12 m in height.

• Large burrs are often found on the stock; young branches are covered with glands which exude a sticky substance that adheres to the fingers when touched.
• Leaves are deciduous, pinnate, 7.5–25 cm long, the main-stalk hairy and with sticky sap like the young twigs; leaves have 11–21 oval or ovate leaflets 2.5–5 cm long and 8–1.2 cm across, dark green above, paler and at first slightly downy beneath, ultimately glabrous; stipules begin as 6 mm long but become longer and spiny with age.
• Flowers are in racemes 5–6 cm long and wide, 10–15 flowers per raceme, little fragrance; petals are pale rose with a yellow blotch on the standard; calyx is dark red, hairy.
• Fruit is a pod 5–9 cm long, covered with sticky glands.