Juglans L.
Trees; bark fissured. Twigs with lamellate pith. Winter buds with few scales. Lvs aromatic. ♂ catkins pendulous, solitary, situated laterally on previous year's shoots. ♀ fls terminal, few or solitary, in erect spikes. Bracteoles adnate to ovary, not persistent. Fr. a large indehiscent drupe; endocarp woody and often very hard, incompletely 2-4-celled, indehiscent or dividing in 1/2. Seed corrugated, 2-4-lobed, remaining in shell at germination.
Key
15-20 spp., N. temperate, extending south to the N. Andes. Naturalised spp. 2.
Although technically drupes, the frs of all Juglans spp. are colloquially known as nuts.
