30 MICHIGAN ACADEMY OF SCIENCE. 



Populus candicans Ait. Balm of Gilead. 



(P. balsamifera ca7idicans A. Gray.) 



Populus deltoides Marsh. Cottonwood. 



(Populus vionUifera Ait.) 



Populus grandidentata Michx. Large-toothed Aspen. 



Populus heterophylla L. Downy Poplar. 



Populus tremuloides Michx. American Aspen. 



Prunus nigra Ait. Canada Plum. Horse Plum. 



Prunus Pennsylvanica L. f. Wild Red Cherry. Pin Cherry. 



Prunus serotina Ehrh. Black Cherry. 



Prunus Virginiana L. Choke Cherry. 



Quercus acuminata (Michx.) Houda. Chestnut Oak. 



{Quercus Muhlenhergii Engelm.) 



Quercus alba L. White Oak. 



Quercus Alexanderi Britton. Alexander's Oak. * 



Quercus ellipsoidalis E. J. Hill. Hill's Oak. 



Quercus coccinea Wang. Scarlet Oak. 



Quercus imbricaria Michx. Shingle Oak. 



Quercus macrocarpa Michx. Bur Oak. 



Quercus minor (Marsh.) Sargent. Post Oak. 



{Quercus obtusiloba Michx.) 



Quercus palustris DuRoi. Pin Oak. 



Quercus platanoides (Lam.) Sudw. Swamp White Oak. 



{Quercus bicolor Willd.) 



Quercus rubra L. Red Oak. 



Quercus Schneckii Britton. Schneck's red oak. 



{Q. Texana Sargent.) 



Quercus velutina Lam. Black Oak. 



{Quercus tinctoria Bartram.) 



Salix amygdaloides Anders. Willow. 



Salix nigra Marsh. Black Willow. 



Sassafras Sassafras (L.) Karst. Sassafras. 



{Sassafras officinale Nees.) 



Sorbus Americana Marsh. American Mountain Ash. 



{Pyrus Americana DC.) 



Sorbus sambucifolia (C. & S.) Roem. Western Mountain Ash. 



{Pyrus sambucifolia C. & S.) 



Thuja occidentalis L. White Cedar. Arbor Vitae. 



Tilia Americana L. Basswood. Linden. 



Tsuga Canadensis (L.) Carr. Hemlock. 



Ulmus Americana L. American Elm. 



Ulmus fulva Michx. Slippery or Red Elm. 



Ulmus racemosa Thomas. Rock Elm. 



Viburnum Lentago L. Sheep-berry. 



Four or more hybrid oaks have been found, but these were not enumerated above. 

 They are: Quercus albaX macrocarpa, Quercus Leana,== Q. velutinaX imbricaria, 

 Quercus platanoides X macrocarpa, Quercus imbricaria X rubra. 



LIST OF SHRUBS INDIGENOUS TO MICHIGAN. 



There are two hundred and nine species and varieties. 



Acer Pennsylvanicum L. Striped Maple. 



Acer spicatum Lam. Mountain Maple. 



Alnus Alnobetula (Ehrh.) K. Koch. Green Alder. 



(Alnus viridis DC.) 



Alnus incana (L.) Willd. Speckled Alder. 



Alnus rugosa (DuRoi.) K. Koch. Smooth Alder. 



Amelanchier alnifolia Nutt. June or Service Berry. 



Amelanchier rotundifolia (Michx.) Roem. June or Service Berry. 



Amorpha canescens Pursh. Lead-plant. 



Andromeda Polifolia L. Wild Rosemary. 



Aralia hispida Vent. Bristly Sarsaparilla. 



Arctostaphylos Uva-Ursi (L.) Spreng. Bearberry. 



Aronia arbutifolia (L.) Medic. Red Chokeberry. 



Aronia nigra (Willd.) Britton. Black Chokeberry. 



