Synaphea sp.-Synaphea floribunda A.S.George

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Synaphea is a genus of small shrubs and is endemic to Western Australia. Synapheas have variably shaped leaves but consistently yellow flowers with an unusual pollination mechanism.

Plants in the genus Synaphea are small shrubs, usually with deeply lobed (pinnatipartite) leaves, although some have simple leaves, others pinnate leaves, and have a petiole with a sheathing base. The flowers are relatively small, bright yellow, usually unscented, and arranged in a spike in leaf axils or on the ends of branchlets. The perianth is tube-shaped and zygomorphic, the tube opening in the upper third to half. As in many other members of the Proteaceae, the male anthers and female style are initially in contact and the end of the style is a pollen presenter. In synapheas (and in Conospermum), the anthers and stigma are held together under tension and only separate when touched by a pollinator, ejecting the pollen. The fruit is a hard-shelled nut, but in most species seed set is low.

The genus Synaphea was first formally described in 1810 by Robert Brown in Transactions of the Linnean Society of London. The first species Brown described was Synaphea favosa and it is therefore the type species. The name Synaphea is from the ancient Greek word synaphe meaning "a connection" or "a union", referring to a connection between a sterile anther and the stigma.

Species

The following is a list of formally named Synaphea species and subspecies accepted by the Australian Plant Census as at April 2020:

• Synaphea acutiloba Meisn. - granite synaphea  Synaphea aephynsa A.S.George  Synaphea bifurcata A.S.George
• Synaphea boyaginensis A.S.George  Synaphea brachyceras R.Butcher  Synaphea canaliculata A.S.George
• Synaphea cervifolia A.S.George  Synaphea constricta A.S.George  Synaphea cuneata A.S.George  Synaphea damopsis A.S.George  Synaphea decorticans Lindl.  Synaphea decumbens A.S.George  Synaphea diabolica R.Butcher  Synaphea divaricata (Benth.) A.S.George  Synaphea drummondii Meisn.  Synaphea endothrix A.S.George  Synaphea favosa R.Br.  Synaphea flabelliformis A.S.George  Synaphea flexuosa A.S.George
• Synaphea floribunda A.S.George  Synaphea gracillima Lindl.  Synaphea grandis A.S.George  Synaphea hians A.S.George  Synaphea incurva A.S.George  Synaphea interioris A.S.George  Synaphea intricata A.S.George
• Synaphea lesueurensis A.S.George  Synaphea macrophylla A.S.George  Synaphea media A.S.George  Synaphea nexosa A.S.George  Synaphea obtusata (Meisn.) A.S.George  Synaphea odocoileops A.S.George  Synaphea oligantha A.S.George  Synaphea otiostigma A.S.George  Synaphea oulopha A.S.George  Synaphea pandurata R.Butcher  Synaphea panhesya A.S.George  Synaphea parviflora A.S.George
• Synaphea petiolaris R.Br. - synaphea
  • Synaphea petiolaris R.Br. subsp. petiolaris
  • Synaphea petiolaris subsp. simplex A.S.George
  • Synaphea petiolaris subsp. triloba A.S.George
• Synaphea pinnata Lindl. - Helena synaphea  Synaphea platyphylla A.S.George  Synaphea polymorpha R.Br. - Albany synaphea  Synaphea polypodioides R.Butcher  Synaphea preissii Meisn.  Synaphea quartzitica A.S.George
• Synaphea rangiferops A.S.George  Synaphea recurva A.S.George  Synaphea reticulata (Sm.) Druce  Synaphea sparsiflora A.S.George
• Synaphea spinulosa (Burm.f.) Merr.
  • Synaphea spinulosa subsp. borealis A.S.George
  • Synaphea spinulosa subsp. major A.S.George
  • Synaphea spinulosa (Burm.f.) Merr. subsp. spinulosa
• Synaphea stenoloba A.S.George  Synaphea tamminensis A.S.George  Synaphea trinacriformis R.Butcher  Synaphea tripartita A.S.George  Synaphea whicherensis A.S.George  Synaphea xela R.Butcher

The genus is endemic to Western Australia.

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