3-49 Juglandaceae, walnut family

Marian C. Munro; Ruth E. Newell; Nicholas M. Hill

Authors

Marian C. Munro Nova Scotia Museum, Halifax, NS
Ruth E. Newell E. C. Smith Herbarium, Acadia University, Wolfville, Nova Scotia
Nicholas M. Hill Fernhill Institute, Kentville, Nova Scotia; Acadia University, Wolfville, Nova Scotia and Dalhousie University, Halifax, Nova Scotia

Keywords:

Magnoliophyte, dicots, walnut family, Juglans, butternut

Abstract

Of the approximately 60 species (7–8 genera) worldwide, only one has made its way to Nova Scotia as an infrequent escape. These are mostly trees which bear alternate, pinnately compound leaves. The unisexual flowers are borne in separate catkins. Male catkins occur on the previous year‘s growth or at the base of the current season‘s growth. They are long and drooping, the flowers solitary in catkin bracts, with two to many stamens. Female flowers occur in short, few-flowered catkins at the tip of the current season‘s growth. Ovary is inferior; styles number two. Fruit is a nut with a woody or fibrous husk. Sean Blaney and David Mazerolle provided the photographs.

Author Biographies

Marian C. Munro, Nova Scotia Museum, Halifax, NS

Curator of Botany (NSPM)

Ruth E. Newell, E. C. Smith Herbarium, Acadia University, Wolfville, Nova Scotia

Curator of the E. C. Smith Herbarium (ACAD)

Nicholas M. Hill, Fernhill Institute, Kentville, Nova Scotia; Acadia University, Wolfville, Nova Scotia and Dalhousie University, Halifax, Nova Scotia

Director; Adjunct Professor