Myriactis in Flora of China @ efloras.org

119. Myriactis Lessing, Linnaea. 6: 127. 1831.

粘冠草属 nian guan cao shu

Herbs, annual or perennial, herbage villous, long-stipitate glandular. Leaves alternate, basal and/or cauline, winged petiolate or sessile, blade oblanceolate-oblong to spatulate, sometimes lyrate, sometimes lobed, base clasping, margin ± coarsely dentate or serrate. Capitula small, heterogamous, solitary or numerous in lax corymbose-paniculiform synflorescences; peduncle long. Involucre hemispheric; phyllaries 2- or 3-seriate, subequal, papery, margin scarious, hyaline, ± fimbriate. Receptacles convex, hemispheric or globose, not alveolate, naked. Ray florets fertile, 2-5- or more seriate, tube short, lamina white to purplish, small, orbicular, ovate, or linear; disk florets functionally male, limb narrowly funnelform to campanulate, 4-lobed, lobes lanceolate; anther base obtuse; (disk) style branches appressed, without stigmatic lines, appendages lanceolate, abaxially hairy. Achenes narrowly obovoid, compressed, margin 2-ribbed, apex with short viscid collar (of ray florets), glabrous, ± glandular. Pappus absent.

About 12-16 species: tropical Africa and Asia; five species (one endemic) in China.

1 Ray florets 5- or more seriate, lamina orbicular or ovate (2)

+ Ray florets (1 or)2- or 3-seriate, lamina linear (3)

2 (1) Leaves simple, sometimes lower lobed or parted, lateral lobes 1- or 2-paired. 1 M. nepalensis

+ Leaves lyrate-pinnatipartite or lobed or pinnatisect, or sometimes lower leaves orbicular, simple. 2 M. humilis

3 (1) Mid cauline leaves narrowly to broadly ovate. 3 M. wightii

+ Mid cauline leaves lanceolate, elliptic, or elliptic-lanceolate to oblanceolate (4)

4 (3) Leaves serrate, parted or lobed, but not pinnatipartite. 4 M. wallichii

+ Leaves pinnatipartite, sometimes lyrate. 5 M. delavayi

Lower Taxa