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100
Deciduous gymnosperm with cones that mature in one year; adapted to wet sites
What is Taxodium ascendens?
100
This species will exude a red sap from the bark when damaged
What is Eucalyptus gummifera?
100
This tree has bark adaptations that are believed to have evolved to keep sloths out
What is Ceiba pentandra?
100
Conifer with really orange bark; one of the first trees introduced to the US
What is Pinus sylvestris?
100
Aggressively invasive across the US; originally brought over for commercial silkworm operations
What is Morus alba?
200
This species has peeling orange bark, large compound leaves, and legumes that are typically < 2 inches long
What is Gymnocladus dioicus?
200
This gymnosperm fixes nitrogen and is widely sold as an ornamental tree
What is Casuarina cunninghamiana?
200
This termite and rot resistant wood is popular for flamenco guitars and humidors
What is Cedrela odorata?
200
Gymnosperm with toxic arils and high value wood (especially for bows!)
What is Taxus baccata?
200
This vine with pinnately compound leaves can form a barrier to movement for people, wildlife, and livestock
What is Rosa multiflora?
300
This species has pastel buds and vertical striping on the bark; showy flowers bloom around Easter
What is Amelanchier arborea?
300
Simple leaves with bark that is analogous to river birch
What is Melaleuca quinquenervia?
300
This deep rooted desert species clonally propagates itself, sometimes forming rings over 1000’s of years
What is Larrea spp.?
300
The charcoal‐like dark blocky bark at the base of this tree is useful in distinguishing it from its American counterparts
What is Betula pendula?
300
Aggressive invasive shrub in western US with silver-backed leaves
What is Elaeagnus angustifolia?
400
Low, sprawling shrub; leaves are opposite and 3 - lobed
What is Viburnum acerifolium?
400
This tree has leaves that are both simple and bipinnately compound
What is Acacia melanoxylon?
400
Conifer with a short trunk and narrow crown; grows in the mountains and ecology is influenced by diseases and fire
What is Austrocedrus chilensis?
400
This tree, naturally found in riparian areas, has a short life‐ span, and is often killed by a canker disease.
What is Populus nigra?
400
Gymnosperm with stout curved, spiky needles
What is Cryptomeria japonica?
500
Commonly found in the sand‐hills, this species has a bell‐ shaped leaf base and 3‐4 bristle‐tipped lobes
What is Quercus laevis?
500
This tree usually has a sparse crown with palmately compound leaves and a swollen trunk
What is Adansonia gregorii?
500
Species has thick, tough triangular shaped leaves that have sharp edges
What is Araucaria araucana?
500
A good way to tell this invasive species from its native US counterpart is to look for milky sap from a severed petiole
What is Acer platanoides?
500
This hardwood plantation species is identifiable by its large (> 1 ft long) simple leaves
What is Tectona grandis?