Norway Maple (Acer platanoides) Japanese Barberry (Berberis ...
Norway Maple (Acer platanoides) Japanese Barberry (Berberis ...
Norway Maple (Acer platanoides) Japanese Barberry (Berberis ...
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Status: Invasive.<br />
Native to: Europe.<br />
Downy chess (Bromus tectorum)<br />
Effects: It usually thrives in disturbed areas like open<br />
fields, and roadsides, preventing natives from returning<br />
to the area. In unshaded areas it crowds out native<br />
grasses forming vast swaths where it is the only species<br />
present. It dies early in the season and can present a<br />
fire hazard where abundant because it becomes so dry.<br />
http://www.cnr.uidaho.edu/rxgrazing/Images_Plants/Cheatgrass-Evans.jpg,<br />
;<br />
http://www.ppws.vt.edu/scott/weed_id/brote.htm<br />
Distinctive features: Typically a short grass, it has<br />
distinctively hairy leaves which turn rusty-red to purple<br />
at maturity, then fade to a straw color as the plant dies.<br />
It also recognized from its generally hairy leaves and<br />
particularly by a dense cluster of hairs that form near<br />
where the leaf joins the stem. The flowering stems can<br />
grow to more than a foot tall, though shorter forms are<br />
common. The seed heads tend to droop slightly and the<br />
plant has an overall “wispy”, delicate appearance.<br />
Status: Exotic.<br />
Nodding Foxtail (Setaria faberi)<br />
Native to: Eastern Asia.<br />
Effects: This plant is a widespread weed that causes<br />
particular problems when it grows in cornfields, where it<br />
can, reducing crop yields by more than 10%.<br />
http://www.mitomori.co.jp/hanazukan/image2/yasou466enoko.jp<br />
g; http://www.ppws.vt.edu/scott/weed_id/setfa.htm<br />
Distinctive features: Its grass-like leaves are rolled<br />
when young, and may reach 16 inches long and ¾ inch in<br />
width when mature. Leaf blades have many short hairs<br />
on the upper surface and along the margins. The seed<br />
head is cylindrical, with 1-3 straight bristles emerging<br />
from each seed, giving the seed head a “furry”<br />
appearance. The seed head has a characteristic “droop”<br />
when it is mature. The hairy leaves and drooping seed<br />
head help distinguish this plant from other similar<br />
foxtails.