Cassinia wilsoniae
OrchardErect shrub 0.75–1.8 m high; branchlets with dense tomentose of white cottony hairs. Leaves erect to spreading, sessile, terete, 10–20(–30) mm long, 0.7 mm wide, yellow-green and glabrous or with sparse short aculeate hairs above, dense white cottony hairs below except midrib; apex acute, reflexed, without a mucro; margins strongly revolute, obscuring the lower lamina surface and typically the midrib. Inflorescences corymbose or hemispherical 2–7 cm diam. Capitula (6–)20–50, ochre-coloured, cylindric, 3.0–4.0(–4.7) mm long, 2–3 mm wide; involucral bracts 15–18, innermost lanceolate with lamina deltoid, 3.3–3.4 mm long, erect, white, margins inrolled; receptacle bracts c. 4; florets (3–)6. Cypsela cylindric, 0.5 mm long, with sparse white twin hairs throughout; pappus c. 2.6 mm long. Flowers Feb.–Apr.
LoM, MuM. Also SA. Known with certainty from only Wyperfeld National Park and Lake Albacutya in the northwest where it grows in open low mallee vegetation on yellow-red sand dunes. A collection from near Borrika, South Australia without flowers or fruit may also belong to this species.
Most collections of this species can be readily recognised by the few-flowered inflorescences. Only rarely are there more than 20 capitula present in the one inflorescence and in such cases up to 200 capitula are present in an inflorescence (Orchard 2009).