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The Cycad Pages
Macrozamia occidua

Macrozamia occidua D.L. Jones & P.I. Forst., "Austrobaileya 4(2): 278, fig. 5" (1994). H—BRI
"TYPE: Australia, Queensland, Darling Downs District, Sundown National Park, P.I. Forster 12663B & P. Machin, 8 Jan 1993 (holo BRI, iso CANB)."


Photo Ken Hill
Etymology: Latin occidua, of the west, referring to the occurrence Sundown National Park (alluding to the setting of the sun in the west).

Historical notes:

Distinguishing features: Distinguished within the M. plurinervia group by the short leaves with short, broad leaflets.

Distribution and habitat: A rare species, occurring in a few small stands in Sundown National Park, in dry eucalypt woodlands on skeletal soils on slopes.

Conservation status: A rare species known only from a few small stands, all of which are conserved in the Sundown National Park (IUCN Red List category VU; ROTAP category 2Vcat). Gazetted as a Rare or Threatened Plant under Queensland Nature Conservation legislation. 1997 IUCN Red List of Threatened Plants category R.
Photo Ken Hill
Photo Ken Hill

Description:

Plants acaulescent, stem 10-20 cm diam.

Leaves 1-5 in crown, deep green to grey-green, semiglossy, 40-75 cm long, moderately keeled, with 80-120 leaflets; rachis strongly spirally twisted, straight, stiff or recurved, arching stiffly downwards; petiole 10-25 cm long, straight or recurved, unarmed, 6-10 mm wide at lowest leaflets; basal leaflets not reducing to spines.

Leaflets simple, strongly discolorous; margins flat, or incurved (slightly); apex entire to dentate, not spinescent; median leaflets 60-200 mm long, 4-10 mm wide.

Pollen cones fusiform, 10-24 cm long, 3.5-5 cm diam.; microsporophyll lamina 15-25 mm long, 10-17 mm wide; apical spine 0-5 mm long.

Seed cones ovoid, 10-14 cm long, 5-8 cm diam.; megasporophyll lamina 20-25 mm long, megasporophyll with an expanded peltate apex 20-30 mm wide, 10-13 mm high; apical spine 3-20 mm long.

Seeds ovoid, 18-25 mm long, 15-22 mm wide; sarcotesta red.


The Cycad Pages

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Written and maintained by Ken Hill 1998-2010
Maintained by Leonie Stanberg and Dennis Stevenson 2010-2012
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