


Acaena microphylla Hook.f.

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Details
Acaena microphylla Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 55 (1852)
Acaena microphylla Hook.f.
Nomenclature
Hook.f.
Hook.f.
1852
55
ICN
Acaena microphylla Hook.f.
species
Acaena microphylla
Classification
Subordinates
Vernacular names
Descriptions
Acaena microphylla Hook.f.
Main stems slender to rather stout, creeping and rooting, sts subterranean, up to c. 3 dm. long; branchlets ascending, up to c. 5 cm. long, glab. to pilose; lvs up to 3 cm. long, 7-13-foliolate; upper lflts c. 3 mm. long, rarely more, deeply crenate-dentate to subserrate, glab. except on veins below and at tips of teeth, suborbicular, subsessile to sessile; terminal lflt with petiolule c. 1 mm. long; stipules linear. Scapes pilose, up to 2 cm. long, bracts absent or minute. Heads c. 2.5 cm. diam. including spines, bractlets linear, entire or two-toothed at apex. Cupules glab., c. 1·5 mm. long, turbinate, angles thickened. Spines unarmed, up to 1 cm. long, bright to purplish red. Sepals ovate, dull green. Stamens 2, anthers white. Styles 2, fimbriate on one side. Achenes 2, seldom 1 only developed.
Acaena microphylla Hook.f.
Rhizomatous perennial; stems mat-forming, c. 1 mm diam., < 25 cm long, soon rooting and covered by soil; erect branchlets < 2 cm long. Lvs 0.5-3 cm long; stipules entire; leaflets 9-15, orbicular, 1.5-4 × 1.5-4 mm, with 5-7 obtuse teeth, green or bronze and shining on upper surface, with veins and teeth dark, glaucescent and sparsely hairy on lower surface. Scape 0.7-2.5 cm long, pilose (), or capitulum ± sessile (); capitulum c. 5 mm diam. at flowering, < 3 cm diam. (including spines) at fruiting; florets c. 20 (), or 2-4 (); sepals 4; stamens 2; anthers white; styles 2, white; achenes 2. Fr. turbinate, c. 2 × 2 mm, glabrous; spines 4, pink or crimson, < 15 mm long, smooth () or with a few stiff hairs at tip ().
Taxonomic concepts
Acaena microphylla Hook.f.
Acaena microphylla Hook.f.
Collections
Metadata
3f5ea97a-55f6-4b2a-bc50-b6ae6229cd27
scientific name
Names_Plants
1 January 2000
28 June 2007