Month: October 2020
-
Chelate
To combine a metal with another compound. To treat someone with a chelating agent in order to remove a heavy metal such as lead from the bloodstream. A combination of metal ions chemically held within a ring of heterocyclic structures by bonds from each of these structures to the metal. Iron is held by heme…
-
Winged stem
A stem with one or more broad flanges along its length.
-
Whorled leaves
Three or more leaves arising from a stem at the same level or point on it.
-
Wedge-shaped
Of a leaf-base, gradually tapering into the leafstalk.
-
Waste ground
Unused or uncultivated, often disturbed ground (as alongside a new road, around an industrial area, on a heap of mine waste or in a quarry, including w hat are known as brownfield sites).
-
Stem-leaves
Leaves arising from a plant’s stem (as distinct from basal leaves).
-
Spoon-shaped leaf
A leaf with a long narrow stalk-like lower part, suddenly widening into an oval, blunt tip (resembling a spoon or paddle).
-
Scrub
An area of vegetation dominated by shrubs on any type of soil. To prepare to carry out or assist in a surgical operation. The term “scrub” is taken from the routine of thorough hand washing (scrubbing) prior to putting on sterile rubber gloves and operating garments.
-
Salt-marsh
A marsh where the water is salty, usually from sea water flooding or seeping into it at high tide, but also (though rarely) beside salt springs inland.
-
Regular flower
One which is radially symmetrical, where± any straight line drawn through the centre produces two mirror images.