SEVERAL VARIATION PATTERNS AND THEIR EVOLUTION OF PINELLIA (ARACEAE)

The quantitative analysis of the variation patterns of bulbils (B),tubercles (T),rhizomes (R) and leaves of 10 populations representing 5 species in Pinellia were repored. The results are as follow:There are 4 kinds of patterns of vegetative reproduction——T_a^m, T_a^mR_bⁿ, T_a^mR_bⁿB_c^r and T_a^mB_c^r in the genus of Pinellia (a,b,c representing the average numbers of T, R,Band m,n,r being the average ratio of length to width of T,R,Brespectively). The evolution is R→T→B and perhaps the peltata form is more primitive than other forms of leaves. Also the diagram showing species evolution is given.