Here are just of few of the species that were included in the Calinger et al. study of flowering time.
Cercis canadensis (Redbud), a tree in the bean family (Fabaceae), flowers in spring.
Aesculus glabra (Ohio Buckeye; Sapindaceae), flowering in spring.
Podophyllum peltatum (Mayapple), flowering in spring.
Sabatia angularis (Rose Pink) flowers in summer. It is a member of the gentian family.
Cypripedium parviflorum (Yellow Lady’s Slipper) is an orchid that flowers in spring.
Cypripedium acaule (Pink Lady’s Slipper) also flowers in spring.
Hypopitys americana (Pinesap) is a leafless member of the blueberry family that flowers in summer.
Monotropa uniflora is also leafless and a member of the blueberry family.
Calopogon tuberosus (Grass Pink) flowers in summer and is limited to bogs and wet sand.
Chimaphila maculata (Spotted Pipsissewa) is a small, almost herbaceous member of the blueberry family (Ericaceae). It flowers in summer.
Tipularia discolor (Cranefly Orchid) has leaves that are present during the winter and flowers in late summer.
The flowers of the Cranefly Orchid are unusual in that they are asymmetric — the petal on the left side of the flower is shifted downward.
Corallorhiza maculata (Spotted Coralroot) is a leafless orchid that flowers in late summer.
Acer saccharum (Sugar Maple) flowers in spring, but is well-known for its autumn foliage colors.
About the Author: Dr. John Freudenstein is a Professor in the Department of Evolution, Ecology and Organismal Biology and Director of the OSU Herbarium. All phots by the author except those of Corallorhiza and Tipularia, which were taken by Erich DeLin.
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