Verbena simplex Lehm.
Family - Verbenaceae
Stems - To +50cm tall, erect, herbaceous, 4-angled, multiple from base, branching, antrorse strigose.
Leaves - Opposite, sessile, oblanceolate (narrowly above), to +8cm long, 1.5cm broad, coarse serrate. antrorse strigose, rugose above.
Inflorescence - Terminal spike to +30cm tall (long), 5-8mm in diameter. Flowers dense on spike, each subtended by single bract. Bracts to 3mm long, equaling or shorter than calyx tube, lanceolate, ciliate-margined, otherwise glabrous.
Inflorescence.
Flowers - Corolla to +/-7mm
long, 4mm broad at apex, 5-lobed, zygomorphic, typically lilac to lavender
or whitish. Corolla tube to 4mm long, pubescent externally(especially near
apex). Lobes to 1mm long, bearded internally. Stamens 5, didynamous, included,
adnate around middle of corolla tube. Style included, 2-lobed. Ovary of
2 carpels, 4-lobed. Calyx tube to 4mm long in flower, sparse strigose,
5-lobed. Lobes unequal, acuminate, green. Nutlets to 3mm long, brownish.
Flower close-up.
Flowering - May - September.
Habitat - Glades. prairies, fields, waste ground, roadsides, railroads.
Origin - Native to U.S.
Other info. - V. simplex can be found throughout most of the state of Missouri.
This small plant can be recognized by its tall thin flower spikes and
its narrow serrate leaves. The typical flower color is quite lavender
or lilac but, as you can see from the pictures above, the flowers are also
commonly whitish. (Actually the flowers photographed were a bit more bluish
than they appear in the pics). This species has the most narrow leaves
of any Verbena species in Missouri. Like most of the
genus, it hybridizes readily.
Photographs taken somewhere in NC., 5-16-03.
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