Photo Ken Hill
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The Cycad Pages
Macrozamia humilis

Macrozamia humilis D.L. Jones, Fl. Australia 48: 719 (1998).
"TYPE: Australia, New South Wales, Inverell, 16 May 1992, D.L. Jones 9453 & B.E. Jones (holo CANB; iso MEL, NSW)."


Etymology: Latin, humilis, humble or low, in reference to the dwarf habit.

Historical notes:

Distinguishing features: A part of the M. heteromera complex, characterised by the short, dull green or grey leaves with relatively fewer leaflets.

Distribution and habitat: An isolated and probably rare species, in low dry sclerophyll woodland on sandy soil over acid granite.

Conservation status: An isolated and probably rare species (IUCN Red List category VU; ROTAP category 2VC-t).
Photo Ken Hill
Photo Ken Hill

Description:

Plants acaulescent, stem 18-28 cm diam.

Leaves 2-7 in crown, bright green to deep green or grey-green, dull to semiglossy, 35-65 cm long, moderately keeled, with 60-90 leaflets; rachis not spirally twisted to moderately spirally twisted, straight, stiff; petiole 9-16 cm long, straight, unarmed, 6-8 mm wide at lowest leaflets; basal leaflets not reducing to spines.

Leaflets simple or dichotomously branched, weakly discolorous; margins flat; apex entire, not spinescent; median leaflets 100-180 mm long, 4-7 mm wide (ultimate segments 2-3).

Pollen cones fusiform, 14-19 cm long, 4.5-5.5 cm diam.; microsporophyll lamina 14-20 mm long, 11-18 mm wide; apical spine 1-10 mm long.

Seed cones ovoid, 10-15 cm long, 6-8 cm diam.; megasporophyll lamina 25-31 mm long, megasporophyll with an expanded peltate apex 40-50 mm wide, 15-20 mm high; apical spine 2-25 mm long.

Seeds ovoid, 25-31 mm long, 22-26 mm wide; sarcotesta red.


The Cycad Pages

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Written and maintained by Ken Hill 1998-2010
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