11. Myosotis L. (forget-me-not, scorpiongrass)
Plants annual or
perennial herbs. Stems erect or ascending to arched or occasionally more or
less spreading, solitary or few to several, unbranched or branched, variously
hairy. Leaves alternate and usually also basal, the basal and lower stem leaves
with a winged petiole, the median and upper stem leaves sessile. Leaf blades 1–8
cm long, 5–16 mm wide, variously shaped, variously hairy, the hairs sometimes
hooked at the tip, often without noticeable lateral veins. Inflorescences
sometimes paired, appearing as dense clusters at the start of flowering, then
becoming elongated into usually sometimes scorpioid, spikelike racemes, these
sometimes appearing aggregated into panicles, the flower stalks variously
elongating or not as the fruits mature, erect to spreading, drooping, or
reflexed, the lower flowers subtended by small, progressively reduced, slender
bracts or the bracts few and alternating with the flowers or absent altogether.
Cleistogamous flowers not produced. Calyces 5-lobed 1/3–2/3 of the way to the
base, actinomorphic or zygomorphic (then somewhat 2-lipped with the 3 upper
lobes shorter than the 2 lower lobes), the lobes usually elongating somewhat at
fruiting, variously hairy, the hairs sometimes hooked at the tip. Corollas
trumpet-shaped to funnelform or broadly trumpet-shaped to nearly saucer-shaped,
blue or white, sometimes with a yellow spot in the throat or pink in bud, the
throat with small, scalelike appendages, these often hairy, the lobes rounded.
Stamens attached variously in the corolla tube, the filaments short, the
anthers oblong to ovate, not exserted from the corolla. Ovary deeply 4-lobed,
style short, either shorter than or slightly longer than the nutlets, not
exserted from the corolla, the stigma capitate (sometimes minutely so), unlobed
or 2-lobed. Fruits usually dividing into 4 nutlets, these more or less
flattened-ovoid, the ventral side often angled slightly toward the tip, the
lateral margin with a longitudinal rim or keel all the way around, attached to
the flat or low mound-shaped gynobase at the base, the attachment scar
relatively small, bluntly to broadly but sharply pointed at the tip, the
surface smooth, brown to black, shiny. About 100 species, nearly worldwide,
most diverse in temperate regions.