Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Myosotis macrosperma Engelm.
- Family: Borage (Boraginaceae)
- Flowering: April-June
- Field Marks: This forget-me-not differs from all others in the genus by its gland-tipped, hooked
hairs on the sepals, its unequal, usually 2-lipped calyx, its ascending rather than erect flower stalks,
and its large seeds up to 1/10 inch long.
- Habitat: Floodplain woods, damp fields, wooded slopes; also in drier habitats.
- Habit: Annual or biennial herb with a slightly thickened taproot.
- Stems: Upright or ascending, few branched, up to 2 feet tall, with many spreading hairs.
- Leaves: Of 2 kinds: the basal arranged in a rosette, simple, oblong, rounded at the tip, tapering
to the base to short stalks, up to 3 inches long; the leaves on the stem alternate, simple, oblong
to oblanceolate, rounded or somewhat pointed at the tip, tapering to the sessile base, up to 1
1/2 inches long, up to 3/4 inch wide; both kinds toothless and densely hairy on both surfaces.
- Flowers: Usually 2-20 in a terminal or less commonly axillary raceme, seldom overlapping;
flower stalks ascending, not erect, up to 1/2 inch long, hairy.
- Sepals: 5, green, up to 1/6 inch long, united below, unequal, often 2-lipped, covered with
numerous gland-tipped, hooked hairs.
- Petals: 5, white, united below, up to 1/10 inch long.
- Stamens: 5, attached to the corolla tube.
- Pistils: Ovary superior, 4-parted.
- Fruits: A set of 4 nutlets, obovoid to oval, usually rounded at each end, tan, smooth, shiny,
narrowly winged, up to 1/10 inch long.
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