Larrea
(named after John Anthony de Larrea, a Spanish promoter of science). ORD. Zygophylleae. A very small genus (four species have been described) of greenhouse evergreen shrubs. Flowers yellow; the peduncles inter-stipular, short, terminal, one-flowered. Leaves pinnate, two-lobed or two-parted. For culture, &c., see Zygophyllum.
L. mexicana (Mexican). fl. bright yellow. Summer. l. sessile, two-foliolate. h. 4ft. to 10ft. This species is the Creosote-plant of North-west America; it emits an odour so repulsive that no animal will touch it. The twigs are covered with a resinous substance, of which, it is reported, the Indians make a glue, with which they fasten the heads of arrows to the shaft. It is also used as a remedy for rheumatism.
L. nitida (shining). fl. yellow. June and July l. impari-pinnate, smooth, clammy, with five or seven pairs of approximate linear leaflets. h. 8ft. Buenos Ayres, 1823.