Schaub Rough Lemon Budwood

Citrus jambhiri.

Fruit medium in size, of highly variable form but usually oblate to elliptic-oblong; commonly with irregularly furrowed or lobed basal collar or neck; usually with broad apical nipple surrounded by a deep irregular areolar furrow.  Rind medium-thick; surface typically deeply pitted, and rough or bumpy, sometimes ribbed; easily separable; color lemon-yellow to brownish-orange.  Segments about 10; axis large and hollow.  Flesh color light yellow to pale orange; medium juicy; flavor moderately acid.  Seeds numerous, small, highly polyembryonic, and cotyledons faintly green.  Some crop throughout the year but mainly in winter.

Tree vigorous and large, upright-spreading, with numerous small thorns; leaves medium-small, blunt-pointed, and light green.  Flowers small and mandarin-like, purple-tinged, and produced more or less throughout year, but mainly in spring and late summer.  New shoot growth faintly purple-tinted.  Sensitivity to cold about like that of true lemons.

Although used to some extent as a lemon substitute, for which it is not very suitable, the rough lemon is highly important as a rootstock in many parts of the world, some selections exhibit resistance to the burrowing nematode.

While resemblances to the lemon are fairly obvious, the differences are greater, and many of its characters are clearly those of the Rangpur or mandarin.

Rootstocks of accession: Carrizo citrange, C-35 citrange.

Prepared by the Givaudan Citrus Variety Collection at The University of California Riverside.