Grevillea

 Silky oak Grevillea robusta in flower, photographed by Jan Smith.

Belongs within: Grevilleoideae.

Grevillea is a genus of over 350 species of trees and shrubs found in Australia and New Guinea. Outlying species are also found on Sulawesia and New Caledonia. Of the three species found in New Guinea, G. baileyana and G. glauca are shared with northern Australia whereas G. papuana is endemic to New Guinea (Foreman 1995). Members of the genus are characterised by the production of fruits as leathery follicles with seeds often winged all around.

Some species of Grevillea are popular garden plants for their bright comb-like flowers. One such species is the largest member of the genus, the silky oak G. robusta, a native of coastal eastern Australia growing to over 30 m in height. The sand grevillea G. arenaria is a spreading shrub with leaves that are more or less hairy on the lower surface, found in western New South Wales.

Characters (from Foreman 1995): Leaves spiralled to alternate, simple or pinnate, usually with differentiated upper and lower surfaces. Inflorescences terminal or axillary, panicles or raceme-like, sometimes with flowers borne on one side. Peduncles absent. Indumentum adpressed, hairs 2-branched or appearing to be attached near the middle. Flowers bisexual, pedicellate, in pairs, subtended by small, non-persisting bract; floral bracts absent. Perianth mostly recurved; limb oblique, globular, segments coherent at limb for some time after tube splits open. Anthers all perfect, ovate or oblong, sessile in concave limb segments; connective not usually prolonged. Disc fleshy, semi-annular or annular, mostly entire or sometimes more or less bilobed. Ovary shortly stipitate or sessile, 1-locular; ovules 2, hemitropous, attached laterally; style often elongated, protruding from slit on lower side of tube, retained for some time by coherent limb segments, eventually free; pollen presenter more or less dilated, straight, oblique or lateral and disc-like; stigma usually in centre of pollen presenter. Fruit a follicle, coriaceous to woody. Seeds 1 or 2, flat, orbicular or oblong, winged all around or occasionally wingless.

Grevillea
|--G. acuariaG04b
|--G. adenotrichaLK14
|--G. agrifoliaLK14
| |--G. a. ssp. agrifoliaLK14
| `--G. a. ssp. microcarpaLK14
|--G. alpinaMB97
|--G. anethifoliaG04b
|--G. arenariaT08
| |--G. a. var. arenariaT08
| `--G. a. var. canescensT08
|--G. aspleniifoliaH90
|--G. baileyana McGillivray 1993 (see below for synonymy)F95
|--G. banksiiA91
|--G. bipinnatifidaS35
|--G. bracteosaB00
|--G. browniiGK00
|--G. cagianaG04b
|--G. calcicolaK90
|--G. caleyiH90
|--G. candelabroidesK90
|--G. chrysodendronC16
|--G. cirsiifoliaM87
|--G. craveniiLK14
|--G. cunninghamiiLK14
|--G. decipiensG04b
|--G. depauperataGK00
|--G. dimidiataLK14
|--G. diversifoliaGK00
|--G. donaldianaLK14
|--G. dryandriLK14
|--G. erectilobaG04a
|--G. eriostachyaM93
|--G. eryngioidesH18
|--G. erythrocladaLK14
|--G. fasciculataGK00
|--G. georgeanaG04a
|--G. glauca Knight 1809 [incl. G. gibbosa Brown 1810]F95
|--G. goodiiM87
|--G. heliospermaLK14
|--G. helmsianaH15
|--G. huegeliiB00
|--G. ilicifoliaR35
|--G. insignisG04b
| |--G. i. ssp. insignisG04b
| `--G. i. ssp. elliotiiG04b
|--G. integrifoliaS95
|--G. juncifoliaMLP09
|--G. juniperinaB00
|--G. lanigeraG76
|--G. latifoliaLK14
|--G. laurifoliaM87
|--G. lavandulaceaB00
|--G. leptobotrysGK00
|--G. linearisC08
|--G. longifoliaH90
|--G. longistylaB96
|--G. lullfitziiG04b
|--G. maheraeLK14
|--G. microstylaLK14
|--G. mimosoidesLK14
|--G. miquelianaM89
|--G. monticolaLK00
|--G. mucronulataB96
|--G. myosodesLK14
|--G. nematophyllaG04b
|--G. obliquistigmaG04a
|--G. paniculataS95
|--G. papuana Diels 1916 [incl. G. subargentea White 1922]F95
|--G. paradoxaG04a
|--G. parallelaLK14
|--G. petrophiloidesS95
|--G. pilosaG04b
|--G. piluliferaGK00
|--G. polystachyaC16
|--G. prasinaLK14
|--G. pritzeliiS95
|--G. pteridifoliaB00
|--G. pterospermaCC03
|--G. pulchellaGK00
|--G. puniceaNC91
|--G. pyramidalisLK14
| |--G. p. ssp. pyramidalisLK14
| `--G. p. ssp. leucadendronLK14
|--G. quercifoliaGK00
|--G. ramosissimaB96
|--G. refractaLK14
|--G. renwickiana von Mueller 1887M87
|--G. repensM87
|--G. robustaSK02
|--G. rogersonianaK90
|--G. sarissaCC03
|--G. scabraLK00
|--G. sericeaH87
|--G. stenobotryaB05
|--G. stenomeraK90
|--G. stenophyllaK90
|--G. striataC16
|--G. thelemanianaK90
| |--G. t. ssp. thelemanianaK90
| `--G. t. ssp. pinasterK90
|--G. trinervisC08
|--G. triternataB96
|--G. variifoliaK90
|--G. wickhamiiLK14
| |--G. w. ssp. wickhamiiLK14
| `--G. w. ssp. pallidaLK14
`--G. wilsoniiGL04

Grevillea baileyana McGillivray 1993 [incl. G. edelfeltii Muell. 1885 (n. n.), Kermadecia pinnatifida Bailey 1886, G. pinnatifida (Bailey) Bailey 1886 non Jacques 1843]F95

*Type species of generic name indicated

References

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[GL04] Groom, P. K., & B. B. Lamont. 2004. Fruit and seed development in two Hakea species (Proteaceae). Journal of the Royal Society of Western Australia 87 (4): 135–138.

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[H87] Haviland, E. 1887. Flowering seasons of Australian plants. No. I—List of plants indigenous in the neighbourhood of Sydney, flowering during July. Proceedings of the Linnean Society of New South Wales, series 2, 1 (4): 1049–1051.

[H15] Hedley, C. 1915. Presidential address. Journal and Proceedings of the Royal Society of New South Wales 49 (1): 1–77, pls 1–7.

[H18] Houston, T. 2018. A Guide to Native Bees of Australia. CSIRO Publishing.

[K90] Keighery, G. J. 1990. Vegetation and flora of Shark Bay, Western Australia. In: Berry, P. F., S. D. Bradshaw & B. R. Wilson (eds) Research in Shark Bay: Report of the France-Australe Bicentenary Expedition Committee pp. 61–87. Western Australian Museum.

[LK00] Lowrie, A., & K. F. Kenneally. 2000. Three new species of Stylidium (Stylidiaceae) from south-west Western Australia. Nuytsia 13: 293–302.

[LK14] Lyons, M. N., G. J. Keighery, L. A. Gibson & T. Handasyde. 2014. Flora and vegetation communities of selected islands off the Kimberley coast of Western Australia. Records of the Western Australian Museum Supplement 81: 205–244.

[M89] Maiden, J. H. 1889. Notes on the geographical distribution of some New South Wales plants, compiled from information supplied by W. Bauerlen, and from some diagnoses by Baron von Mueller, K.C.M.G., F.R.S., &c. Proceedings of the Linnean Society of New South Wales, series 2, 4 (1): 107–112.

[MB97] Maiden, J. H., & E. Betche. 1897. On a new species of Macadamia, together with notes on two plants new to the colony. Proceedings of the Linnean Society of New South Wales 21 (4): 624–627.

[MLP09] McKenzie, N. L., S. van Leeuwen & A. M. Pinder. 2009. Introduction to the Pilbara Biodiversity Survey, 2002–2007. Records of the Western Australian Museum Supplement 78 (1): 3–89.

[M93] Mollemans, F. H. 1993. Drummondita wilsonii, Philotheca langei and P. basistyla (Rutaceae), new species from south-west Western Australia. Nuytsia 9: 95–109.

[M87] Mueller, F. von. 1887. Some hitherto undescribed plants of New South Wales. Proceedings of the Linnean Society of New South Wales, series 2, 1 (4): 1105–1110.

[NC91] Nielsen, E. S., & I. F. B. Common. 1991. Lepidoptera (moths and butterflies). In: CSIRO. The Insects of Australia: A textbook for students and research workers 2nd ed. vol. 2 pp. 817–915. Melbourne University Press: Carlton (Victoria).

[R35] Rayment, T. 1935. A Cluster of Bees: Sixty essays on the life-histories of Australian bees, with specific descriptions of over 100 new species. Endeavour Press: Sydney.

[S95] Smith, G. T. 1995. Species richness, habitat and conservation of scorpions in the Western Australian wheatbelt. Records of the Western Australian Museum Supplement 52: 55–66.

[S35] Solomon, M. E. 1935. On a new genus and two new species of Western Australian Aleyrodidae. Journal of the Royal Society of Western Australia 21: 75–91.

[SK02] Sumithramma, N., A. R. V. Kumar, K. Chandrashekara & D. Rajagopal. 2002. Plant selection for nesting by Oecophylla smaragdina, Hymenoptera: Formicidae: do physical features affect the choice of the plant? Journal of the Bombay Natural History Society 99 (3): 408–412.

[T08] Turner, F. 1908. Notes and exhibits. Proceedings of the Linnean Society of New South Wales 33: 288.

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