d from the parent plant.

=Legume=: a plant belonging to the family of the pea, clover, and bean;
that is, having a flower of similar structure.

=Lichen=: a kind of flowerless plant that grows on stones, trees,
boards, etc.

=Loam=: an earthy mixture of clay and sand with organic matter.

=Magnesia=: an earthy white substance somewhat similar to lime.

=Magnify=: to make a thing larger in fact or in appearance; to enlarge
the appearance of a thing so that the parts may be seen more easily.

=Membrane=: a thin layer or fold of animal or vegetable matter.

=Mildew=: a cobwebby growth of fungi on diseased or decaying things.

=Mold=: see mildew.

=Mulch=: a covering of straw, leaves, or like substances over the roots
of plants to protect them from heat, drought, etc., and to preserve
moisture.

=Nectar=: a sweetish substance in blossoms of flowers from which bees
make honey.

=Nitrate=: a readily usable form of nitrogen. The most common nitrate is
saltpeter.

=Nitrogen=: a chemical element, one of the most important and most
expensive plant foods. It exists in fertilizers, in ammonia, in
nitrates, and in organic matter.

=Nodule=: a little knot or bump.

=Nutrient=: any substance which nourishes or promotes growth.

=Organic matter=: substances made through the growth of plants or
animals.

=Ovary=: the particular part of the pistil that bears the immature
seed.

=Ovipositor=: the organ with which an insect deposits its eggs.

=Oxygen=: a gas present in the air and necessary to breathing.

=Particle=: any very small part of a body.

=Perennial=: living through several years. All trees are perennial.

=Petal=: a single leaf of the corolla.

=Phosphoric acid=: an important plant food occurring in bones and rock
phosphates.

=Pistil=: the part of the blossom that contains the immature seeds.

=Pollen=: the powdery substance borne by the stamen of the flower. It is
necessary to seed production.

=Pollination=: the act of carrying pollen from stamens to pistils. It is
usually done by the wind or by insects.

=Porosity=: the state of having small openings or passages between the
particles of matter.

=Potash=: an important part of plant foods. The chief source of potash
is kainit, muriate of potash, sulphate of potash, wood ashes, and
cotton-hull ashes.

=Propagate=: to cause plants or animals to increase in number.

=Protein=: the name of a group of substances containing nitrogen.