Checklist of Plants of India

Collema leptaleum Tuck., Proc. Amer. Acad. Arts 6: 263. 1864.

var. leptaleum Degel., Symb. Bot. Upsal. 20(2): 101. 1974; Akhtar & D. Awasthi, Biol. Mem. 5(1) : 22. 1980; D. Awasthi, Comp. Macrolich. India, Nepal & Sri Lanka 132. 2007.
India (Tamil Nadu and Uttarakhand), Thailand; tropical and temperate regions of the world.

var. biliosum (Mont.) Degel., Symb. Bot. Upsal. 20(2): 105. 1974; Akhtar & D. Awasthi, Biol. Mem. 5(1): 23. 1980; D. Awasthi, Comp. Macrolich. India, Nepal & Sri Lanka 133. 2007.
Collema nigrescens  var. biliosum  Mont., Ann. Sci. Nat., Bot., ser. 2, 18: 20. 1842.
India (Maharashtra, Tamil Nadu and Uttarakhand), Nepal, Sri Lanka, Thailand; tropical and temperate areas of the world.