Abstract:Nicely Postulated that Catycanthus L. originated in the eastern United States of North America thence migrated Westward into Califo rnia and Asia. According to the comparison of chromsomal data and morphological characters, the Present paper did not agree

Abstract:The anomalous secondary thickening was studied in the root of medicinal species of Achyranthes bidentata B1. The primary and early secondary structures are similar to those of most herbs of the dicotyledons. The anomalous cambium, then, arises successivel

Abstract:Schizogenous secretory ducts are found in the ground tissue of the stolon of Sagittaria sagittifolia L. The single secretory duct initial develops from the ground meristem at the level 1 millimeter from the shoot apex. By successive divisions of the initi