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Flora of Australia Online


A.S.George, B.P.M.Hyland

Megahertzia A.S.George & B.Hyland, Fl. Australia 16: 497 (1995); name a pun on Roaring Meg Creek where an early collection was made, derived from the Greek megas (large) and hertz , the unit of frequency of sound

Type: Megahertzia amplexicaulis A.S.George & B.Hyland

Rainforest understorey trees. Leaves alternate, simple. Conflorescence raceme-like, borne below leaves; common bracts and floral bracts present. Perianth actinomorphic; tepals separating almost to base, caducous. Anthers apiculate; filaments adnate to tepals for most of their length. Hypogynous glands irregularly lobed. Gynoecium straight; pollen presenter slightly broadened; stigmatic groove small, terminal; ovules 2. Fruit a follicle, dehiscing at maturity. Seeds 2, winged; wing wider at the ends and on one side. 

A monospecific genus, confined to a small area in north-eastern Qld. 

A monospecific genus, confined to a small area in north-eastern Qld. Its affinities are uncertain but it seems to be closest to tribe Oriteae. Distinguished from Orites especially by the racemes borne below the leaves, much larger flowers, slightly enlarged pollen presenter with a terminal stigmatic groove and the presence of floral bracts. Leaf cuticular morphology 'suggests no particularly close relationship to any existing Oriteae, Knighteae or Embothrinae' (R.J.Carpenter, Bot. J. Linn. Soc. 116: 249–303, 1994).



Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999), products of ABRS, ©Commonwealth of Australia