Habit and leaf form. Shrubs. ‘Normal’ plants. Leaves well developed. Plants with roots; non-succulent; spiny (‘branchlets’); autotrophic. To 2 m high. Self supporting. Not heterophyllous. Leaves small; alternate; with blades; petiolate; with ‘normal’ orientation; simple; not peltate. Leaf blades entire; linear, or obovate, or elliptic; pinnately veined. Mature leaf blades adaxially glabrous (or with antrorse or patent hairs); abaxially glabrous (or with antrorse or patent hairs). Leaves with stipules. Stipules scaly, or leafy; persistent. Leaf blade margins entire, or dentate; revolute (‘recurved’). Leaf anatomy. Hairs present, or absent.
Reproductive type, pollination. Fertile flowers hermaphrodite. Unisexual flowers absent. Plants hermaphrodite.
Inflorescence and flower features. Flowers aggregated in ‘inflorescences’. Inflorescences simple; axillary. Flowers long pedicellate; bracteate; minute; regular; 5 merous; cyclic; tetracyclic. Free hypanthium present. Perianth with distinct calyx and corolla; 10; 2 -whorled; isomerous. Calyx present; 5; 1 -whorled; gamosepalous; lobed; widely spreading; valvate; regular; white, or pink. Calyx lobes ovate. Epicalyx absent. Corolla present; 5; 1 -whorled; alternating with the calyx; polypetalous; regular; white, or pink. Petals clawed; hooded. Androecium present. Fertile stamens present. Androecial members definite in number. Androecium 5. Androecial members adnate (to the base of the sepals); free of the gynoecium; free of one another; 1 -whorled. Stamens 5; all more or less similar in shape; isomerous with the perianth; alternisepalous; filantherous. Anthers separate from one another; dehiscing via longitudinal slits; bilocular; tetrasporangiate; appendaged. The anther appendages basal. Fertile gynoecium present. Gynoecium 3 carpelled. The pistil 1 celled. Carpels reduced in number relative to the perianth. Gynoecium syncarpous; synstylovarious; inferior. Ovary plurilocular; 3 locular. Gynoecium stylate. Styles 1; apical. Stigmas 3 - lobed. Ovules 1 per locule (in WA); ascending; anatropous.
Fruit and seed features. Fruit aerial; 7–8 mm long; a schizocarp. Dispersal unit the seed, or the fruit. Seeds 1 per locule.
Geography, cytology, number of species. Native of Australia. Endemic to Australia. Australian states and territories: Western Australia. South-West Botanical Province. A genus of 1 species; 1 species in Western Australia; G. intangendus (F.Muell. ex F.Muell.) Rye; 1 endemic to Western Australia.
Etymology. From the modern word granite combined with the Greek for "in the nature of; in mineral terms", in reference to the granite habitat to which the taxon is restricted.
FloraBase is produced by the staff of the Western Australian Herbarium, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions. Publication or other use of content on this site is unauthorised unless that use conforms with the copyright statement.
Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/