Ourisia macrophylla Hook.

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

O. macrophylla Hook. Ic. Pl. 1843, tt. 545, 546.

Stem prostrate and rooting, 1-2 cm. diam., terminating in tuft of ± erect lvs. Lamina subcoriac., 4-10-(15) cm. long, very broadly to very narrowly ovate, regularly and shallowly dentate-crenate, upper surface glab. to hairy, undersurface with hairs, if any, confined to veins; petiole channelled, narrow, > lamina. Peduncle erect, much > lvs, up to 60 cm. tall in fr., us. with a whorl of 2-4 ± sessile cauline lvs below floral bracts. Bracts in 1-8 whorls, us. 4-∞ per whorl, becoming smaller and more nearly entire upwards. Pedicels as many as bracts in each whorl and longer, 3-5 cm. long, clad in short crowded glandular hairs. Calyx-clefts all reaching almost to base; lobes narrow-triangular to narrow-oblong, entire, acute to subacute. Corolla 15-20 mm. diam., with hairs on outside of tube.

Key

Hairs of calyx-lobes and of uppermost bracts predominantly or all glandular; lvs hairy

var. lactea

Hairs of calyx-lobes and of uppermost bracts wholly or almost wholly without glands

Lvs uniformly though sts sparsely hairy over whole upper surface

var. drucei

Lvs quite glab. at least on distal ⅔ of upper surface

Length of lamina nearly = width, which is greatest near ± cordate base; calyx-lobes often > 10 mm. long in fr.

var. macrophylla

Length of lamina > width, which is greatest about middle, base us. not cordate; calyx-lobes rarely > 7 mm. long in fr.

Hairs few on petiole, absent on upper lf-surface; length of lamina us. < 2 × width

var. robusta

Hairs ∞ on petiole and extending to adjacent parts of upper lamina-surface; length of lamina us. > 2 × width

var. meadii

Ourisia macrophylla Hook.

Key

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