This winter we’re categorizing plants in our database by family. This week’s post is plants in the Apocynaceae (Dogbane), Aquifoliaceae (Holly), Araceae (Arum), Araliaceae (Ginseng), & Aristolochiaceae (Birthwort) families.
Plants in the Apocynaceae family are mostly perennial herbs or vines with milky sap & opposite or whorled leaves. Members of the Aquifoliaceae family have toothed or spiny leaves & small unisexual flowers that occur on separate male and female plants. Members of the Araceae family have an unusual inflorescence called a spadix, consisting of numerous small flowers borne on a stalk & surrounded by a leaf-like bract called a spathe.
Photography by Ken Borgfeldt, Daudie & John Colson, David Heavner, Richard Holzman, Janice Irwin, Betty Jones, Penny Longhurst, Jim Poling, Lucy Prim, Randy Richardson, & Joe Standaert. Botanical plant names seem to change almost every day, but for now we use those approved by ITIS, the Integrated Taxonomic Information System. Plants that are non-native to North America are indicated by an asterisk (*) placed after the species name. Click on any picture to zoom & enter the slide show.
This week’s post is plants in the Apiaceae (Celery, Parsley, & Carrot) family, also known as umbellifers because their umbels resemble umbrellas. Typically, plants in this family are hollow-stemmed with flowers arranged in a central umbel, which branches again to form a compound umbel consisting of many small umbellets. Some umbellifers are fairly straightforward to identify, but sometimes it’s hard to distinguish between those which have compound leaves. You can find more information about umbellifers in our