Abstract:Minor venation patterns of Syndiclis, Beilschmiedia, Potameia, Sinopora, and Endiandra were observed. The results showed that their venation patterns could be grouped into three types, the Type A with fine leaf reticulations bearing no free ending of veinlets, the Type B with fine leaf reticulations having free and simple ending of veinlets, and the Type C with coarse leaf reticulations possessing profusely branched ending of veinlets. Beilschmiedia was provided with the most diversified venation including all 3 types while other genera had only one of the 3 types each. Syndiclis, Sinopora, and the Chinese Endiandra shared the Type A venation pattern which was different from Potameia with the Type C venation pattern.
