Twig Key

So far you have made the following choices...

• deciduous leaves
• alternate arrangement
• tree
• spines or thorns

It could be one of the species in the table below. Let's narrow our choices by looking for thorns or spines.

My twig numerous small spines	My twig has woody, single or branched thorns
My twig has paired spines

Possible Matches:

Family	Genus	Species	common name
Araliaceae	Aralia	spinosa	Devil's walking stick
Araliaceae	Oplopanax	horridum	Devilsclub
Berberidaceae	Berberis	thunbergii	Japanese barberry
Caesalpiniaceae	Gleditsia	aquatica	waterlocust
Caesalpiniaceae	Gleditsia	triacanthos	honeylocust
Elaeagnaceae	Elaeagnus	angustifolia	Russian-olive
Elaeagnaceae	Elaeagnus	umbellata	autumn-olive
Fabaceae	Robinia	hispida	bristly locust
Fabaceae	Robinia	neomexicana	New Mexican locust
Fabaceae	Robinia	pseudoacacia	black locust
Moraceae	Maclura	pomifera	osage-orange
Rosaceae	Chaenomeles	speciosa	common floweringquince
Rosaceae	Crataegus	spp.	hawthorn
Rosaceae	Prunus	angustifolia	Chickasaw plum
Rosaceae	Prunus	subcordata	Klamath plum
Rosaceae	Pyrus	communis	common pear
Rutaceae	Poncirus	trifoliata	trifoliate orange

 

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