Comparative root anatomy of four species in Calligonum

摘要

The root anatomical character of 4 speices of calligonum, grow in desert region of xinjiang, China, were studied comparatively, the species examined were C. densum, C. ebi- nuricum, C. rubicundum and C. junceum. Anatomical features of these species were as follows, there are large cross-sectional area of vessels in the xylem, fibres were very thick-walled, its lumina was small, and often in samll groups or aggregations, and mucilage cells always present, these anatomical features confirm their particular ecological conditions. On the other hand, roots of four species differed significantly in the total cross-sectional area of vessels in the xylem, in the total cross- sectional areas of fibres and distribution of mucilage cells and crystalline idioblasts.