A modern reference to temperate woody plants, including updated content from this site and much new material, can be found at Trees and Shrubs Online.

Juglans californica S. Wats.

Modern name

Juglans californica S. Watson

A large shrub or small, round-headed tree whose leaves are made up of eleven to fifteen leaflets each 1 to 212 in. long, 13 to 34 in. wide, and glabrous. Fruits globose, 13 to 34 in. wide, enclosing a nut deeply grooved lengthwise. Coming from S. California it is not hardy with us.

Very closely related to J. californica and perhaps not specifically distinct from it is:

J. hindsii (Jeps.) R. E. Smith /. californica var. hindsii Jeps. – A native of Central California and a tree 40 to 70 ft high (occasionally more) with fifteen to nineteen leaflets to each leaf. The entire leaf is 9 to 12 in. long, the leaflets 2 to 4 in. long, 34 to 1 in. wide, coarsely toothed, downy on the midrib and veins beneath. Young shoots and leaf-stalks very downy. Fruits globose, downy, 1 to 2 in. wide; nut, thick-shelled, shallowly grooved.

J hindsii was introduced to Kew in 1926 and is hardy there. It is related to J. microcarpa which differs in having even more (up to twenty-three) leaflets, narrower and more finely toothed. It is much planted in Californian towns as a street tree.



Other species in the genus