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
Flowers - Purplish pink or violet, veined, the butterfly-shaped
ones having standard petal, wings, and keel, clustered at end of
peduncles; the minute flowers lacking a corolla, nearly sessile.
Calyx of 5 slender, nearly equal lobes. Stems: Prostrate,
trailing, or sometimes ascending, woolly or downy, leafy. Leaves:
Clover-like, trefoliate. Fruit: A very small, hairy, flat,
rounded, acute pod.
Preferred Habitat - Dry soil open, sandy places.
Flowering Season - August-September.
Distribution - Massachusetts to the Gulf, and westward to the
Mississippi.
Springing upward from a mass of clover-like leaves, these showy
little blossoms elevate themselves to arrest, not our attention,
but the notice of the passing bee. As the claw of the standard
petal and the calyx are short, he need not have a long tongue to
drain the nectary pointed out to him by a triangular white mark
at the base of the banner. Now, as his weight depresses the
incurved keel, wherein the vital organs are protected, the stigma
strikes the visitor in advance of the anthers, so that pollen
brought on his underside from another flower must come off on
this one before he receives fresh pollen to transfer to a third
blossom. At first the keel returns to its original position when
depressed; later it loses its elasticity. But besides these showy
flowers intended to be cross-fertilized by insects, the bush
clovers bear, among the others, insignificant-looking, tightly
closed, bud-like ones that produce abundant self-fertilized seed.
The petaliferous flowers are simply to counteract the inevitable
evils resulting from close inbreeding. One usually finds
caterpillars of the "dusky wings" butterfly feeding on the
foliage and the similar tick trefoils which are its staple. At
night the bush clover leaves turn upward, completely changing the
aspect of these plants as we know them by day. Michaux named the
group of flowers for his patron, Lespedez, a governor of Florida
under the Spanish regime.
Perhaps the commonest of the tribe is the VIOLET BUSH CLOVER (L.
violacea), a variable, branching, erect, or spreading plant,
sometimes only a foot high, or again three times as tall. Its
thin leaves are more elliptic than the decidedly clover-like ones
of the preceding species; its rose-purple flowers are more
loosely clustered, and the stems are only sparingly hairy, never
woolly.
On the top of the erect, usually unbranched, but very leafy stem
of the WAND-LIKE BUSH CLOVER (L. frutescens), the two kinds of
flowers grow in a crowded cluster, and more sparingly from the
axils below. The clover-like leaflets, dark green and smooth
above, are paler and hairy below. Like the rest of its kin, this
bush clover delights in dry soil, particularly in open, sandy
places near woods of pine and oak. One readily distinguishes the
SLENDER BUSH CLOVER (L. Virginica) by the very narrowly oblong
leaves along its wand, which bears two kinds of bright rose
flowers, clustered at the top chiefly, and in the axils.
Public-domain text, read in full here on John Shaqi.
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