Descriptions of Registered Cultivars
ORIGIN: Grevillea 'Bronze Rambler' originated in cultivation in the garden of W and L Wilson, Moe South, Victoria. It is said to be a cross between G. rivularis and Grevillea 'Poorinda Peter'. It was selected for further propagation by Goldup Nurseries. The name refers to the attractive bronzy new growth and its near prostrate spreading habit. The cultivar was first received by the Authority in January 1985. Registration applied for by Goldup Nurseries of Mt Evelyn, Victoria.
DESCRIPTION: This cultivar is essentially prostrate forming a mat up to 4m across with some branches rising to .3m tall. Its habit is very dense. The leaves are deeply pinnatisect, up to 140mm long by up to 90mm wide at the widest point. The margins of the leaf lobes are thickened but not recurved. Each of the lower lobes are often further divided tow or three times towards the tip of the lobe. Each lobe ends in a short pungent tip. The midvein and each of the lateral veins in the lobes are prominent on the undersurface. These veins are only sparsely hairy, with brown and silvery hairs scattered along their length. The rest of the undersurface is covered with a moderately dense matting of appressed silvery hairs. The veins on the upper surface are yellow green and contrast against the dark green of the upper surface. The upper surface also has a very sparse covering of silky hairs, concentrated along the midveins and the lateral veins themselves, gradually diminishing as the leaf matures. The new growth is a deep bronze colour.
The flowers are in racemes up to 60mm long and are of the "toothbrush" shape. The perianth is 10-14mm long, a dark red in colour and moderately covered with white silky hairs on the tube and brownish on the perianth lobes. The style is up to 25mm long, dark pink on emergence through to crimson as they age. The pollen presenters are greenish yellow in colour. Flowering occurs from spring to autumn.
DIAGNOSIS: Grevillea rivularis: 2m tall x up to 5m wide. Leaves: 3-6cm long x up to 7cm wide; bipinnatipartite; considerable secondary lobing; undersurface glabrous; uppe rsurface glabrous; rachis straight or flexuose; midveins and laterals prominent under - also paler in colour thus adding to prominence; veins paler on upper surface (especially at leaf lobe junctions); lobes pungent. Flowers: perianth glabrous; racemes 6cm long; terminal; perianth ca. 14mm long; style glabrous ca. 32mm long.
Grevillea 'Bronze Rambler': 0.3m tall x up to 4m wide. Leaves: 14cm long x 9cm wide; pinnatisect; occasional secondary lobes; moderately dense appressed silvery hairs on upper surface gradually diminishing with age; rachis straight; midveins and laterals prominent under; veins paler on upper surface; lobes pungent. Flowers: perianth moderately silky hairy; racemes 6cm long; terminal; perianth ca. 14mm long; styles glabrous ca. 25mm long.
Grevillea 'Poorinda Peter': 2-3m tall x up to 4m wide. Leaves: 16cm long x up to 4cm wide; pinnatisect; occassional secondary lobes; very short silky appressed hairs on the undersurface; top surface glabrous; rachis straight; midveins and laterals prominent under; veins fairly inconspicuous on upper surface; lobes pungent. Flowers: perianth densely silky hairy; racemes up to 7cm long; terminal; perianth ca. 12mm long; style glabrous ca. 30mm long.
This cultivar is very distinct from its purported parents. This could be because Grevillea 'Poorinda Peter' is a hybrid between G. acanthifolia and G. aspleniifolia. The cultivar is easily distinguished from both purported parents, however, mainly because of its very low to prostrate habit.
CULTIVATION NOTES: Grevillea 'Bronze Rambler' has proven to be extremely vigorous and a very hardy plant for difficult sites. It is drought tolerant and frost hardy. The cultivar grows best in a full sun to semi-shaded situation in well-drained soils of either a clay or sandy nature. It is useful for rapidly covering large areas or banks and batters. It must be propagated by vegetative means to preserve the cultivar form. Leaf bud cuttings have proven effective in propagation. The major release to the public was in 1985, and ten cents from each plant sold bearing the official copyright label was to be donated to the Royal Children's Hospital (Melbourne) for leukaemia research. This was done in memory of the originator's daughter, Jennifer Wilson.
PREVIOUS PUBLICATION: "Australian Horticulture" August 1985 page 41.
COLOUR CODE: RHS Colour Chart 1966
pollen presenter: yellow green group 146A
style: red purple group 64A
perianth: red purple group 64A
leaves (new growth): greyed purple group 185A
ACRA REFERENCES: ACC355, ACRA161/145, CBG8502428/8500116/8701092/9006537
ACCEPTED FOR REGISTRATION ON: 21 October 1988