Stellaria pubera Michx. - Giant Chickweed
Family - Caryophyllaceae
Stems - Sprawling to erect,
multiple from thick roots, branching above, herbaceous, to +20cm tall,
with minute longitudinal ribs, reddish-purple, with pubescence in one or
two distinct longitudinal lines, or pilose (pubescence multicellular).
Stem.
Leaves - Opposite, sessile
to very short-petiolate, lanceolate, oblong, narrowly ovate, or oblanceolate,
to +3cm long, +1cm broad, entire, glabrous but typically with ciliate margins
on lower half of blade, acute at apex.
Inflorescence - Single flowers
from between opposite stems. Peduncles elongating in fruit to 2.5cm, -1mm
in diameter, densely pubescent with pubescence in two opposing longitudinal
lines.
Flowers - Corolla rotate.
Petals 5, white, deeply notched and appearing as ten petals, free, to +6mm
long, glabrous. Stamens 10, anthers orange-red. Styles 3. Ovary globose,
superior. Sepals 5, free, green with slightly lighter margins, lanceolate,
to 5mm long, 2.5mm broad, glabrous or sparse pilose. Fruit a globose capsule dehiscent by
4 valves. Seeds with free-central placentation.
Calyx close-up.
Flower close-up.
Flowering - April - May.
Habitat - Dry to moist low woods.
Origin - Native to U.S.
Other info. - To me this
is one of the best looking plants of the genus. Typically this genus is
weedy and troublesome but this species is native and adds
a surprisingly brilliant splash of white for such a small plant. I don't
know if it is cultivated, but it would make a neat border.
Photographs taken in Brown Summit, NC., 4-6-03.
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