Macrozamia viridis D.L.Jones & P.I.Forst.

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Nomenclature

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Specimens

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Description

Plants acaulescent; stem 10–20 cm diam.; 2–8 leaves in crown. Leaves 35–60 cm long, with 80–160 pinnae, dark green, semi-glossy or highly glossy; petiole 9–21 cm long, 8–14 mm wide at lowest pinna; rachis strongly spirally twisted. Basal pinnae not reducing to spines. Median pinnae simple, 7–20 cm long, 5–11 mm wide, strongly discolorous; margins flat; apex entire, not spinescent. Pollen cones fusiform, 9–18 cm long, 3.5–5 cm diam.; microsporophyll lamina 15–20 mm long, 12–18 mm wide; apical spine 0–15 mm long. Seed cones ovoid, 8–14 cm long, 5.5–7 cm diam.; megasporophyll with an expanded, peltate apex 30–50 mm wide and 10–15 mm long; apical spine 0–15 mm long. Seeds ovoid, 20–24 mm long, 17–23 mm wide; sarcotesta red.

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Phenology

Cones mature between October and January. The seeds ripen in March and April (Jones & Forster 1994).

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Biostatus

Native.

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Distribution

Endemic. Highly localised and probably rare, in the Wyberba district of the Darling Downs, Qld.

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Habitat

Grows in sandy soils over granite in moderately wet eucalypt woodlands.

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Ecology

Due to their underground stem, adult Macrozamia plants are able to re-sprout after loss of the above-ground foliage from fire. Seedlings and unburied seeds are usually killed by fire.

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Conservation Status

Qld: Listed as Endangered (Nature Conservation (Plants) Regulation 2020 (Queensland), Nov 2022 list.

IUCN Red List: Listed as Endangered, 2022.

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Representative Herbarium Specimens

Qld: W of Girraween National Park, K.D. Hill 4747 & L. Stanberg (CANB, K, MEL, NSW, NY).

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Notes

Similar to M. fawcettii , but separated by the overall smaller sizes of all parts and the more distinctly flattened petiole.

See Species profile—Macrozamia viridis | Environment, land and water | Queensland Government (des.qld.gov.au)

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Illustrations

D.L. Jones & P.I. Forster, Austrobaileya 4: 284, fig. 7 (1994).

See Macrozamia viridis at The World List of Cycads (cycadlist.org) for photos

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Bibliography

Jones, D.L. & Forster, P.I. (1994). Seven new species of Macrozamia section Parazamia (Miq.) Miq. (Zamiaceae section Parazamia) from Queensland. Austrobaileya 4(2): 281–283.

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Source

Data derived from Flora of Australia Volume 48 (1998), a product of ABRS, ©Commonwealth of Australia

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© Copyright Commonwealth of Australia, 2024
Last updated: Unknown; Feb 29, 2024 12:34 Status: Legacy

Author - K.D. Hill

Contributor - A.M. Wheeler (editorial assistance August 2023)

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Acknowledgements -

Cite this profile as: K.D. Hill. Macrozamia viridis, in (ed.), Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. https://profiles.ala.org.au/opus/foa/profile/Macrozamia%20viridis [Date Accessed: 15 March 2025]