Cojoba costaricensis (common names include Angel's hair) is a species in the Cojoba genus in the family Fabaceae.[1] The native range of this species is Nicaragua to Panama. It is a tree and grows primarily in the wet tropical biome.[2] Occurs commonly in mature forest at 1400-1600m in Costa Rica, especially in Monteverde. 5-15m tall subcanopy tree, with doubly compound fern-like leaves. There are tiny extrafloral nectar glands between each pair of leaflets.[3] Cojoba costaricensis does not close its leaves at night in nyctinistic movement like other legumes.
Britton & Rose described the species in 1928 as being a round headed tree with the trunk, branches and petiole having dense brown hairs.[4] Each leaf has 4-7 pairs of divisions (pinnae) with 10-14 leaflets, 6-7mm long corolla.It has numerous flowers, with petals 6-7mm long.