ULMUS
Elm genus
Ulmus x hollandica
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Ulmus parvifolia
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Ulmus parvifolia
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Ulmus rubra
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HRP locations
Morton - Christopher Pine Grove - W 12th |
HRP location
Charles - W 11th |
HRP location
Charles - W 11th |
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants Superdivision Spermatophyta – Seed plants Division Magnoliophyta – Flowering plants Class Magnoliopsida – Dicotyledons Subclass Hamamelididae Order Urticales Family Ulmaceae – Elm family Genus Ulmus L. – elm |
Species
Ulmus × hollandica Mill. – Dutch elm |
Species
Ulmus parvifolia Jacq. – Chinese elm |
Species
Ulmus parvifolia Jacq. – Chinese elm |
Species
Ulmus rubra Muhl. – slippery elm |
Hybrid of Ulmus × hollandica and a field elm Ulmus minor |
lacebark elm
Central Park Splendor (trademark)
Native to China, Korea, Japan Native habitat: Rich soil and near water courses Edibility
Salt spray tolerance moderate Commemorates Arthur Vining Ross Erroneously known as 'Across Central Park' Propagated from specimen in Central Park, NYC, believed to be largest and oldest in US Reported invasive in DC, NC, NE, NJ,VA, and WI |
Chinese elm
Drake elm Drake Chinese elm Drake lacebark elm Emerald Vase Allee (trademark)
Native to China, Korea, Japan Native habitat: Rich soil and near water courses Edibility
Salt spray tolerance moderate Propagated from specimen found on U. of Georgia campus, Athens, Georgia Reported invasive in DC, NC, NE, NJ, VA, and WI |
red elm
gray elm soft elm
Native to eastern North America Lifespan: ave. 200 years Named for inner bark, which is moist and sticky ("slippery") and red |
Tree / Buds / Bark
Tree
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Tree
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Tree
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Tree
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Flowers
Fruit
Foliage
Leaves
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Leaves
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Leaves
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Leaves
pointed at the tip and doubly toothed. They are from 4 to 7 inches long and the sand papery texture of the upper surface and asymmetrical base distinguish slippery elm from other elms in the state. The lower surface of the leaves can be either smooth or hairy. |
The elm-grass root aphid, Tetraneura ulmi, is also called the elm sack gall aphid. Winged forms fly from elm galls in June and July to colonize roots of grasses where they are usually tended by moisture ants in the genus Lasius. These aphids reproduce by giving birth to live nymphs. In September winged forms develop and return to elm where they produce nymphs that feed on the bark and eventually mature to wingless males and females. Fertilized females only lay one egg each. Eggs overwinter on the bark and hatch the following spring. These new nymphs develop over 3 to 4 weeks into a form called the fundatrix that "founds" a new generation of about 35 aphids. Fundatrices are dark green with transverse bands of light wax across the abdomen and thorax. Feeding on new elm leaves induces the leaf to form a sack gall about 3/8 inch tall inside of which the fundatrix gives birth to nymphs that eventually give birth to a second generation that develop wings. Up to 85 aphids have been found in one gall. The galls are stalked, hollow, and shiny green, yellow-green, or (eventually) red. In June and July, 3/32 to 1/8 inch long winged aphids develop that are shiny black with dark gray abdomens. When the galls crack open, these fly to grasses where they burrow down to feed on roots. Their offspring are fat, wingless, reddish-orange aphids that have very short siphunculi paired near the tail. Although standard protocol calls for elm-grass root aphids on grass roots to form winged forms that fly back to elm, some aphids continue to feed on grass roots throughout the winter still tended by ants. Most of the aphids tended by ants are adults, and it is thought that ants eat most of the newly born aphids!
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mycena bark mushrooms
moss lacewing larva with camouflage elm sack gall apjids fall webworm larvae gypsy moth larvae cicadas |