Myosotis scorpioides L.


Myosotis scorpioides plant

Family - Boraginaceae

Habit - Fibrous-rooted perennials.

Stems - Lax, spreading, with ascending tips, rooting at lower nodes, usually branched, pubescent with antrorse hairs.

Myosotis_scorpioides_stem.jpgStem and leaves.

Myosotis_scorpioides_stem3.jpgLower stem and rooting nodes.

Leaves - Alternate, simple, entire, to 8 cm long, oblong or oblanceolate, sessile, rounded at tip, pubescent with appressed hairs.


Myosotis_scorpioides_leaf2.jpgLeaf abaxial.

Inflorescences - Racemes or small panicles, sometimes paired at the branch tips, the spikelike the flowers with stalks 3-5 mm long, these elongating to 5-8 mm and spreading to slightly drooping at fruiting, all or nearly all lacking bracts.


Calyces - 2.5-4.0 mm long, actinomorphic, 5-lobed less than 1/2 of the way to the base, the lobes all similar in appearance, broadly triangular, moderately to densely pubescent with short, appressed hairs.


Corollas - Corollas 4-10 mm long, saucer-shaped, the tube 2.0-3.5 mm long, the spreading portion 5-9 mm in diameter, light blue with a yellow spot in the throat, usually pink in bud. Stamens inserted near the tip of the corolla tube. Pistil 1 per flower, with 2 fused carpels. Style 2.0-2.5 mm long, equal to or extending slightly beyond the tips of the nutlets.


Fruits - Schizocarps splitting into 4 nutlets, these 1-2 mm long, dark brown or black.

Flowering - April - October.

Habitat - Spring branches, streambanks, lake margins.

Origin - Native to Europe.

Other info. - This delicate and pretty species is uncommon in Missouri, being found sporadically in wet places. It is much more common in the upper Midwest, Northeast, and Northwest. It is garden favorite and is nonagressive, rarely escaping cultivation in the Midwest.

Photographs taken at Onondaga Cave State Park, Crawford County, MO, 8-20-2014, and in Estes Park, CO, 6-19-2018 (SRTurner).