Myosotis bryonoma

Detailed description

Single rosettes with fibrous roots. Rosette leaves 3–5, fleshy, petiolate; petioles sometimes wide, indistinct, not sheathing, 1.0–6.6 mm x 0.6–1.7 mm; lamina 2.5–7.4 mm x 1.5–4.5 mm, widest point usually at or above middle, rarely below middle, narrowly obovate to very broadly obovate, ovate to very broadly ovate, rarely narrowly elliptic, broadly elliptic, rotund, lanceolate, or oblanceolate; apex obtuse, with hydathode on abaxial side; trichomes 0.2–0.7 mm long, straight, antrorse, appressed, sparsely to densely distributed (but abaxially usually glabrous), adaxially and abaxially oriented parallel relative to the midrib. Inflorescences 1–5 per rosette, prostrate to ascending, unbranched (rarely once-branched), 10–45 mm long, wholly bracteate, with up to 3–7 cauline leaves per inflorescence (including all branches) and, of these, 1–3 associated with flowers and 2–4 not associated with flowers; adventitious roots lacking at tips; scape 0.4–1mm wide; trichomes 0.2–0.6 mmlong, straight, antrorse, appressed, sparsely to densely distributed, sometimes overlapping. Lowest cauline leaves generally petiolate; petioles 0.9–5.0 mm x 0.5–1.2 mm; lamina 2.7–6.9 mm x 1.6–3.3 mm, oblanceolate to narrowly obovate, rarely elliptic or obovate to broadly obovate; apex obtuse, with hydathode on abaxial side; trichomes as on rosette leaves. Uppermost cauline leaf sessile; lamina 2.5–6.0 mm x 0.9–2.6 mm, oblanceolate to narrowly obovate, lanceolate to ovate, or rarely elliptic or obovate; apex obtuse or acute, with hydathode on abaxial side. Flowers up to 1–3 per inflorescence (including all branches), each subtended by a cauline leaf. Internodes up to 0–1.6 mm long at flowering or 0–4.7 mm long at fruiting. Pedicels up to 0.4–1.1 mm long at flowering or 0.6–6.5 mm long at fruiting; trichomes 0.2–0.9 mm long, straight, antrorse, appressed to patent, densely distributed, sometimes overlapping. Calyx 1.1–3.3 mm long at flowering or 1.8–3.2 mm long at fruiting x 1.6–3.4 mm wide at the top at fruiting; calyx lobes 1.4–2.1 mm x 0.5–1.1 mm at fruiting, lobed to 0.5–0.9 the length of the calyx; trichomes 0.1–0.8 mm long, straight, antrorse, appressed, densely distributed, sometimes overlapping, and inside densely distributed and overlapping. Corolla 1.3–6.6 mm diameter, white with yellow faucal scales; corolla lobes 0.4–2.5 mm x 0.6–2.1 mm, obovate to very broadly obovate, rarely ovate or very broadly ovate); corolla tube 1.6–4.2 mm long from base to faucal scales, 0.5–2.2 mm wide at faucal scales. Stamens 1.7–4.8 mm long; filaments 0–0.3 mm long, attached to corolla tube below faucal scales, 1.0–3.8 mm above base of corolla tube; anthers 0.5–1.1 mm long, included, sometimes partially exserted, only tips reaching faucal scales. Style 1.1–5.9 mm long at flowering, 1.9–5.4 mm long at fruiting. Nutlets 4, 1.1–1.9 mm x 0.7–1.1 mm, ovoid, convex or keeled, winged or scarcely winged, smooth, shiny, light brown