Vittadinia A.Rich.

Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons

VITTADINIA A. Rich.

Annual or perennial herbs or subshrubs. Lvs alternate, simple, entire to lobed and again toothed. Capitula solitary. Involucral bracts in several rows, imbricate, the outer somewhat herbaceous, the inner partly membranous. Receptacle flat to convex; scales 0. Outer florets ♀, ligulate, in 1-several rows; ligules white or pinkish to bluish purple. Inner florets ⚥, tubular, often fewer than ♀. Achenes all similar, obovate, oblanceolate, cuneate, or obconic, usually compressed, rarely terete, hairy, with or without facial ribs; pappus of scabrid hairs in 1-several rows.

Key

Ligules white; lvs glabrous or sparsely to densely clothed in erect hairs

3. australis

Ligules pinkish to bluish purple; lvs lanate, hispid, or with appressed strigose hairs

Upper stems and lower surface of lvs distinctly lanate

2. *gracilis

Upper stems and lower surface of lvs strigose or hispid

Lvs mostly entire, rarely with 1-(2) pairs of shallow lobes near apex; lower surface of lvs covered in strigose, appressed, antrorse hairs

1. *cuneata

Lvs all deeply 3-lobed or mostly with 1-2-(4) pairs of distant lobes, if entire, then lvs with spreading hairs mostly confined to margins and midvein below

Lvs petiolate, deeply 3-lobed and often again toothed; involucral bracts glandular and with few strigose hairs; margins of achenes hairy

*dissecta ζ

Lvs long-cuneate, usually with 1-2-(4) pairs of remote lobes, sometimes entire; involucral bracts with minute glandular hairs only; margins of achenes glabrous except at apex and base

*muelleri ζ

29 spp., mostly Australia, 1 sp. in N.Z. and 1 in New Caledonia. Native sp. 1, naturalised 4.

The genus has been revised recently by Burbidge, N. T., Brunonia 5 : 1-72 (1982).

Fig. 20. Stem hairs of Vittadinia. A V. gracilis; B V. cuneata; C V. australis. © All rights reserved. [Image: 4X4C]

Vittadinia A.Rich.

Key

Volume contents

Share