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FOC | Family List | FOC Vol. 16 | Boraginaceae

19. Myosotis Linnaeus, Sp. Pl. 1: 131. 1753.

勿忘草属 wu wang cao shu

Herbs annual or perennial, short pubescent or glabrescent. Leaves alternate. Cymes becoming racemelike after anthesis, ebracteate or rarely with few bracts. Calyx 5-lobed or parted, slightly enlarged or not in fruit. Corolla blue or white, rarely light purple, usually salverform, rarely campanulate or funnelform; throat appendages 5, scalelike; lobes 5, spreading, rotund, margin convolute. Stamens included; anthers ovate to elliptic, apex obtuse. Ovary 4-parted. Style linear; stigma discoid, mucronate. Gynobase flat or slightly convex. Nutlets 4, usually ovate, appressed, lenticular, vertical, smooth, shiny; attachment scar basal.

About 50 species: Africa, Asia, Australia, Europe, North America; five species in China.

1 Calyx 5-lobed for 1/2-2/3 its length, sparsely strigose outside.   (2)
+ Calyx 5-lobed nearly to base, densely pubescent with straight and hooked hairs.   (3)
2 (1) Pedicel 6-8 mm in fruit; nutlets ovoid; lower stem nodes without roots; leaf blade oblanceolate to oblong   2 Myosotis caespitosa
+ Pedicel to 22 mm in fruit; nutlets triangular; lower stem nodes with roots; leaf blade oblong to narrowly oblong   3 Myosotis bothriospermoides
3 (1) Stems usually diffuse; inflorescences few flowered; pedicel reflexed or recurved, to 15 mm; nutlet base with fleshy pubescent appendages   1 Myosotis sparsiflora
+ Stems erect; inflorescences many flowered; pedicel erect, 4-6 mm in fruit; nutlet base without appendages   (4)
4 (3) Rhizomes slender, producing separate lax sterile shoots to 10 cm tall and flowering stems   5 Myosotis krylovii
+ Rhizomes stout, producing 1 to several fertile stems 20-45 cm tall   4 Myosotis alpestris

Lower Taxa


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