Petal venation inTrigonella (papilionaceae)
Petal venation of nine species ofTrigonella has been worked out. A positive correlation has been found between length or area and the number of dichotomies but no correlation is found with breadth. In all the species corolla is of simple type exceptT. polycerata in which it is of medicagoid type. Among the different types of anastomosesC andD types are of most frequent occurrence and other types are species specific with a low range of variation.