ulate.= Shaped like a spatula, with a narrow base and an enlarged,
more or less rounded summit.

=Spike.= An elongated flower-cluster having sessile flowers upon an
unbranched axis.

=Spike-like.= Resembling a spike.

=Spinulose-serrate.= Provided with teeth tipped with minute spines.

=Spur.= A hollow projection from the calyx or corolla, usually slender in
shape, and generally directed backward.

=Stamen.= One of the organs of a flower, consisting of a filament and
anther.

=Staminate.= Bearing stamens.

=Stolon.= A short stem arising from the base of a plant, prostrate or
nearly so, and eventually taking root.

=Striate.= Marked with fine stripes or ridges.

=Style.= A portion of the pistil, usually slender, and connecting the
ovary and stigma.

=Superior.= A superior ovary occupies the center of the flower and is
not attached to any other floral organs.

=Subtending.= Situated at the base of an organ.

=Subulate.= Awl-shape.

=Ternately.= Divided by threes.

=Tomentose.= Densely hairy with matted or tangled hairs.

=Trifoliate.= With three leaflets.

=Truncate.= Cut straight across at the tip, or nearly so.

=Tube.= The more or less cylindrical portion of a gamosepalous calyx or
a gamopetalous corolla, distinguished from the expanded or lobed
terminal portion.

=Tubular.= Shaped like a tube.

=Twice-pinnate.= Same as bipinnate.

=Two-lipped.= A calyx or corolla in which the upper half is decidedly
different in size or shape from the lower.

=Umbel.= A flower-cluster with several or many pedicelled flowers all
arising from the same point.

=Undulate.= With a wavy margin.

=Viscid.= Sticky.

=Villous.= With long soft hairs.

=Whorl.= An arrangement of 3 or more leaves or flowers in a circle around
a node.

=Whorled.= In a whorl.

=Wing.= A thin flat expansion on the sides or edge of an organ.

INDEX

Abies, 1

Abutilon, 72

Acalypha, 66

Acanthaceae, 107

Acanthus Family, 107

Acer, 70

Aceraceae, 70

Acerates, 90

Achillea, 130, 131

Acnida, 30

Acorus, 8

Actaea, 39

Actinomeris, 128

Adder's Mouth, 17

Adenocaulon, 118

Adlumia, 41

Aesculus, 70

Agastache, 97

Agrimonia, 55

Agrimony, 55

Agropyron, 6

Agrostemma, 33

Agrostis, 6

Ailanthus, 65

Aizoaceae, 31

Alder, 22

Alder, Black, 69

Aletris, 13

Alfalfa, 61

Alisma, 3

Alismaceae, 3

Allium, 13