Download Anacardiaceae - Delaware Trees

Anacardiaceae (the cashew family)
•Large family, mainly tropical
• Trees, shrubs, and vines
•Some species produce urushiol
• Cut stems all exude sap and many are used in drugs, dyes, waxes,
•In this family are pistachio, cashew, and mango
• Alternate leaves
The Sumacs
smooth sumac
Rhus glabra
(Anacardiaceae)
winged sumac
Rhus copallina
staghorn sumac
Rhus typhina
poison-ivy
Toxicodendron radicans (Anacardiaceae)
• Alternate, plamately compound leaves with 3 leaflets
• Serrate margins
• Naked brown bud looks like a finger
• Aerial roots
• White drupes
• Irritating oil
Lauraceae- the laurel family
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Family comprises over 3,000 flowering plants in over 50 genera
Occur mainly in warm temperate and tropical regions
Most are aromatic evergreen trees or shrubs (Sassafras)
Fruit is a one seeded fleshy fruit with a hard layer (drupe)
Many Lauraceae contain high concentrations of essential oils,
some valued for spices and perfumes
Best known species of particular commercial value
Cinnamomum (cinnamon)
Laurus (bay laurel)
Persea (avocado)
sassafras
Sassafras albidum (Lauraceae)
• Leaves heteromorphic, smell when
crushed
• Green new growth, 60-degree branching
• Large green ovoid buds, very large
terminal
• Orange deeply furrowed bark that smells
like fruit loops when cut
• Dark blue 1/3” drupes on red stems
• Good wildlife value
• Not commercially important
• Sassafras tea
• Inhabits moist to dry woods, hedgerows
• Range is eastern USA and all of
Delaware
spicebush
Lindera benzoin (Lauraceae)
• Multi-stemmed understory shrub
• Grows on moist to wet sites
• Leaves entire, glabrous, elliptical, strong smell when crushed
• Flowers in yellow clusters in early spring
• Fruit = red drupes in late summer and fall
• Extremely common on its habitat throughout Delaware
Rosaceae (the rose family)
• Large cosmopolitan family – more than 100 genera and thousands
of trees, shrubs, and herbs- most are deciduous
• Alternate leaf arrangement, margin most often serrate
•Paired stipules are generally present as well as glands on petiole
• Includes many species that produce fruits commercially
Apples, pears, quinces, apricots, plums, cherries, peaches,
raspberries, loquats, strawberries, almonds
• Many planted ornamentally in DE
• Some members have valuable wood
• Fleshy fruits eaten by birds, rodents, and deer (and seeds can be
spread this way)
downy serviceberry
Amelanchier arborea (Rosaceae)
hawthorn
Crataegus spp. (Rosaceae)
beach plum
Prunus maritima (Rosaceae)
apple / crabapple
Malus spp. (Rosaceae)
pear
Pyrus spp. (Rosaceae)
black cherry
Prunus serotina (Rosaceae)
rose
Rosa spp. (Rosaceae)
brambles, blackberry, etc.
Rubus spp. (Rosaceae)