[DOC] [TLE] Maple - Wikipedia [PAR] Acer /esr/ is a genus of trees or shrubs commonly known as maple. There 
are ... The distinctive fruit are called samaras, "maple keys", "helicopters", ... 
These seeds occur in distinctive pairs each containing one seed enclosed in a "
nutlet" .... Crotch Wood, Bees Wing, Cats Paw, Old Growth and Mottled are some 
terms... [DOC] [TLE] Do Maple Trees Drop Helicopters Once a Year? | Home Guides | SF ... [PAR] produce winged seeds called double samaras, which twirl to the ground in late 
summer or early fall. ... Maple "helicopters" fall before the leaves drop from the 
trees. ... These may range from green to a brilliant red in early spring sun. 
Although... [DOC] [TLE] Sycamore seeds twizzle down like tiny helicopters to the ground ... [PAR] Dec 3, 2014 ... Country Diary Wenlock Edge, Shropshire Winged seeds come ... These pairs are 
positioned opposite another pair in the same ... There must be thousands of keys 
ready to spring from this one tree and the chances of their... [DOC] [TLE] Seed dispersal by wind: Gone with the wind - Woodland Trust [PAR] Aug 21, 2014 ... As summer ends, the UK's trees plan for the next generation. ... To increase their 
dispersal, some seeds form structures to catch the wind and aid their flight. This is 
... Winged seeds are called samaras (also known as keys or... [DOC] [TLE] Wind Dispersal Of Seeds - Wayne's Word [PAR] Note: The tree of heaven seed (D) actually spins along its longitudinal axis like a 
rolling pin. ... These fragile units can become airborne with the slightest gust of 
wind, and ... A closely related species is called silver puffs (Uropappus lindleyi 
syn. .... Although their mode of dispersal is similar to single-winged helicopter 
seeds,... [DOC] [TLE] Notice Nature - Autumn Trees and Plants [PAR] Deciduous plants therefore enter a dormant period, shedding their leaves to 
adapt to the ... The female of these flowers develop into winged seeds known as 
... Ash trees have bunches of winged seeds, which are called 'keys' after they way
... [DOC] [TLE] the probable origin of key-fruits - jstor [PAR] foliaceous seed-vessels - called samaras, or key-fruits - of certain maples and ... 
one samara, while that of the maple consists of two, and these are ultimately 
separable. There are about one hundred species of maples ( Acer ) and forty 
species of ash ... duction of winged fruits; and an old-time fraxinoid tree, also 
bearing this... [DOC] [TLE] Identifying Pennsylvania Trees - Pennsylvania Department of ... [PAR] For the purpose of the identification key, needles can be ... These buds will 
remain after leaves .... General: Also called rock maple for its hard wood, this 
important timber tree is found on .... General: Also known as Black birch or Cherry 
birch, this tree normally attains .... bears two winged seeds as do all our native 
pines. [DOC] [TLE] Edible Wild Food Blog  Maple Tree Seeds: Great Survival Food [PAR] Jan 22, 2013 ... These helicopters were also known as whirlees or keys. No matter what you 
remember them as, they are actually called samaras. Maple seeds earned their 
name as being helicopters because they are amazing auto-rotating... [DOC] [TLE] What's Clogging Your Indiana Gutter? - Gutter Covers of Indiana [PAR] I've also heard them called 'Whirly gigs', 'Maple keys', 'Whirlybirds', and ... 'Two 
samara from the Acer' Acer being the seed and Samara being the 'winged' 
attachment. West Lafayette's lesser known claim to fame local icon named after 
seeds that ... Whatever the name, we know that these seed fall from Maple trees 
in the... [DOC] [TLE] Maple trees - helicopters to guitars - Indian Time [PAR] Jun 5, 2008 ... I found they are actually called samaras or maple keys. ... This year there seems 
to more than I have seen in the maple trees around my home. A samara is a type 
of fruit. The maple key

Question: These trees are known for their winged seeds called keys
Answer: maples