Salicaceae

1. Leaves with ovate to broadly triangular blades mostly less than twice as long as wide, the lowermost (or next to lowermost) pair of lateral veins equaling or exceeding all others in length and prominence (and with several smaller branches toward margin of blade); buds each covered with several overlapping scales; bracts (“scales”) in ament coarsely toothed to lacerate or fringed; flowers with an oblique or symmetrical cuplike disc at base; stigmas consisting of 4 or more lobes.

Populus

1. Leaves with lanceolate to linear blades (1.5–) 2 or more times as long as wide, the lowermost several pairs of lateral veins shorter than those toward middle of blade, scarcely prominent; buds each covered with a single scale; bracts (“scales”) in ament entire; flowers with glands at base but no disc; stigmas 2, unlobed.

Salix

All species found in Salicaceae

Populus albaWHITE POPLAR, SILVER POPLAR 
Populus balsamiferaBALSAM POPLAR, HACKMATACK 
Populus deltoidesCOTTONWOOD 
Populus grandidentataLARGE-TOOTH ASPEN, BIG-TOOTH ASPEN 
Populus heterophyllaSWAMP COTTONWOOD 
Populus nigraLOMBARDY POPLAR, EUROPEAN BLACK POPLAR 
Populus tremuloidesQUAKING ASPEN 
Salix albaWHITE WILLOW 
Salix amygdaloidesPEACH-LEAVED WILLOW 
Salix atrocinereaLARGE GRAY WILLOW 
Salix bebbianaBEAKED WILLOW, BEBB'S WILLOW 
Salix candidaSAGE WILLOW, HOARY WILLOW 
Salix cinereaGRAY WILLOW 
Salix cordataSAND-DUNE WILLOW, FURRY WILLOW 
Salix discolorPUSSY WILLOW 
Salix eriocephalaWILLOW 
Salix euxinaBRITTLE WILLOW, CRACK WILLOW 
Salix exiguaSANDBAR WILLOW 
Salix humilisUPLAND WILLOW, PRAIRIE WILLOW 
Salix lucidaSHINING WILLOW 
Salix matsudanaCORKSCREW WILLOW 
Salix myricoidesBLUELEAF WILLOW 
Salix nigraBLACK WILLOW 
Salix pedicellarisBOG WILLOW 
Salix pellitaSATINY WILLOW 
Salix pentandraBAY-LEAVED WILLOW, LAUREL WILLOW 
Salix petiolarisSLENDER WILLOW, MEADOW WILLOW 
Salix planifoliaTEA-LEAVED WILLOW 
Salix purpureaBASKET WILLOW, PURPLE-OSIER WILLOW 
Salix pyrifoliaBALSAM WILLOW 
Salix sericeaSILKY WILLOW 
Salix serissimaAUTUMN WILLOW 
Salix viminalisBASKET WILLOW, COMMON OSIER, SILKY OSIER 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 18, 2018. https://michiganflora.net/family.aspx?id=SALICACEAE.