SOLANACEAE: Potato or Nightshade Family
KEY TO SPECIES OF LYCIUM
1. Leaf blade succulent, 1-5 mm across (See GROUP A) ............... L. carolinianum
1. Leaf blade somewhat leathery and fleshy, not succulent, 8-60 mm across (See GROUP J) ........ 2
2. Leaf blade upperside grayish-green, usually oblong-lanceolate or lanceolate to oblanceolate or spatulate; calyx lobes obtuse; corolla tube 3-3.9 mm across at summit ........................................................ L. barbarum
2. Leaf blade upperside bright green, usually ovate to ovate-lanceolate or occasionally rhombic; calyx lobes mostly acute; corolla tube 6-6.5 mm across at summit ..................................................... L. chinense