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Volume I (1961) - Flora of New Zealand Indigenous Tracheophyta - Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledons
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Acaena viridior (Cockayne) Allan

A. viridior (Ckn.) Allan comb. nov. 

A. sanguisorbae Vahl var. viridior Ckn. in T.N.Z.I. 48, 1916, 193.

Type locality: Wellington, Cockayne.

Main stems stout, creeping and rooting, up to 1 m. long; branchlets ascending, up to 10 cm. long, rather sparsely pilose to glab. Lvs c. 4-7 cm. long, 7-9-foliolate; stipules c. 1 cm. long, deeply 3-fld. Upper lflts elliptic to obovate-oblong, crenate-serrate, c. 1·5-2 cm. long, subsessile, bright green and glab. or nearly so above, paler and pilose on veins below. Terminal lflt on petiolule c. 3-4 mm. long. Scapes stout, up to 10 cm. long, ± pilose; bracts lfy, c. 1 cm. long. Heads c. 3 cm. diam. including spines; bractlets linear, up to 1 cm. long, often deeply toothed. Cupules obconic, tetragonous, almost winged above, pilose, c. 4 mm. long; spines unequal, up to 13 mm. long, pale green to pale yellow when mature. Sepals rather pale green, ovate-lanceolate, up to 1·5 mm. long, pilose below, glab. above. Stamens 2, anthers white. Stigma plumose.

DIST.: N., S. Lowland tussock-grassland and open places from c. lat. 39° to 44°.

Cockayne emphasizes that the basal lflts are never stained with brown as in A. anserinifolia. The sp. is more closely related to A. novae-zelandiae.

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