Plants → Magnoliophyta → Magnoliopsida → Proteales → Proteaceae Juss. → Grevillea Knight → Grevillea excelsior Diels
Small, non-lignotuberous tree or shrub, (0.5-)1-8 m high. Fl. yellow-orange, Jan or Jul to Dec. Yellow sand, gravel. Sandplains.
Beard’s Provinces: Eremaean Province, South-West Province.
IBRA Regions: Avon Wheatbelt, Coolgardie, Esperance Plains, Geraldton Sandplains, Mallee, Yalgoo.
IBRA Subregions: Avon Wheatbelt P1, Avon Wheatbelt P2, Eastern Goldfield, Eastern Mallee, Edel, Fitzgerald, Geraldton Hills, Southern Cross, Western Mallee.
Local Government Areas (LGAs): Bruce Rock, Coolgardie, Corrigin, Dalwallinu, Dowerin, Dumbleyung, Dundas, Esperance, Kellerberrin, Kondinin, Koorda, Kulin, Lake Grace, Merredin, Mingenew, Mount Marshall, Mukinbudin, Narembeen, Northam, Northampton, Perenjori, Quairading, Ravensthorpe, Tammin, Trayning, Westonia, Wongan-Ballidu, Wyalkatchem, Yilgarn.
Trees, 3-7 m high; branchlets hairy, not glaucous. Leaves alternate, 100-230 mm long, hairy or glabrous, on the adaxial or abaxial surface, the hairs straight; lamina flat, once divided, pinnately divided, divided to the midrib; lobes 150-200 mm long, 1-1.5 mm wide, the margins revolute, enclosing the lower surface of the leaf blade, forming a groove either side of the midvein. Inflorescences terminal, white or orange; pedicels 2-4 mm long. Perianth 8-12 mm long; tepals some joined and some free after flower opens, hairy, simple-hairy; ovary hairy, sessile; pistil 22-27 mm long, orange, pollen presenter oblique, style glabrous. Follicles hairy, not viscid, dehiscent, 15-22 mm long. Flowers in August, September, October or November. Occurs in the Eremaean (ER) or South-west (SW) Botanical Province(s), in the Murchison (MUR), Coolgardie (COO), Geraldton Sandplains (GS), Avon Wheatbelt (AW), Mallee (MAL) or Esperance Plains (ESP) IBRA subregion(s).
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/