Wild Flowers: An Aid to Knowledge of Our Wild Flowers and Their Insect VisitorsBlanchan, Neltje
Science
Wild Flowers: An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors
Blanchan, Neltje
Wild flowers -- North America
By the helmet-like appendage on the upper lip of the calyx, which
to the imaginative mind of Linnaeus suggested Scutellum (a little
dish), which children delight to spring open for a view of the
four tiny seeds attached at the base when in fruit, one knows
this to be a member of the skullcap tribe, a widely scattered
genus of blue and violet two-lipped flowers, some small to the
point of insignificance, like the present species, others showy
enough for the garden, but all rich in nectar, and eagerly sought
by bees. The wide middle lobe of the lower lip forms a convenient
platform on which to alight; the stamens in the roof of a newly
opened blossom dust the back of the visitor as he explores the
nectary; and as the stamens of an older flower wither when they
have shed their pollen, and the style then rises to occupy their
position, it follows that, in flying from the top of one spike of
flowers to the bottom of another, where the older ones are, the
visitor, for whom the whole scheme of color, form, and
arrangement was planned, deposits on the sticky top of the style
some of the pollen he has brought with him and so
cross-fertilizes the flower. When the seeds begin to form and the
now useless corolla drops off, the helmet-like appendage on the
top of the calyx enlarges and meets the lower lip, so enclosing
and protecting the tiny nutlets. After their maturity, either the
mouth gapes from dryness, or the appendage drops off altogether,
from the same cause, to release the seeds. Old herb doctors, who
professed to cure hydrophobia with this species, are responsible
for its English misnomer.
Perhaps the most beautiful member of the genus is the SHOWY
SKULLCAP (S. serrata), whose blue corolla, an inch long, has its
narrow upper lip shorter than the spreading lower one. The
flowers are set opposite each other at the end of the smooth
stem, which rises from one to two feet high in the woods
throughout a southerly and westerly range. As several other
skullcaps have distinctly saw-edged leaves, this plant might have
been given a more distinctive adjective, thinks one who did not
have the naming of 200,000 species!
Above dry, sandy soil from New York and Michigan southward the
HAIRY SKULLCAP (S. pilosa) lifts short racemes of blue flowers
that are only half an inch long, and whose lower lip and lobes at
either side are shorter than the arched upper lip. Most parts of
the plant are covered with down, the lower stem being especially
hairy; and this fact determines the species when connected with
its rather distant pairs of indented, veiny leaves, ranging from
oblong to egg-shaped, and furnished with petioles which grow
gradually shorter toward the top, where pairs of bracts, seated
on the stem, part to let the flowers spring from their axils.
Public-domain text, read in full here on John Shaqi.
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