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FOC | Family List | FOC Vol. 20-21 | Asteraceae

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

粘冠草属 nian guan cao shu

Authors: Yilin Chen & Luc Brouillet

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


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