Plants in this section are mostly small, bushy shrubs greyish, needle-like leaves and hairy, rather than feathery flowers.

[1] When Alex George reviewed the genus in 1991 he formally described this section, publishing the description in the journal Nuytsia.

[2][3] The name Pilocosta is from the Latin words pilus meaning "hair"[4]: 391  and costa meaning "rib"[4]: 660  referring to the hairy ribs on the floral cup.

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