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Photo Ken Hill
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The Cycad Pages
| Macrozamia polymorpha
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- Macrozamia polymorpha D.L. Jones, Fl. Australia 48: 718 (1998). H—CANB
- TYPE: Australia, New South Wales, c. 4.2 km N along Dandry Road from Newell Highway, 7 June 1991, D.L. Jones 7487 & B.E. Jones (holo CANB; iso BRI, MEL, NSW).
Etymology:
Greek, poly-, many, and -morphus, -shaped, in reference to
the divided and undivided leaflets.
Historical notes:
Treated by
Jones
(1993) as Macrozamia
'species southern Pilliga'.
Distinguishing features:
Distinguished within the M. heteromera complex by the bright
green, broader leaflets that are usually entire, and the
entire seedling leaflets.
Distribution and habitat:
Locally abundant around Coonabarabran and north to the southern
Pilliga Scrub, in dry sclerophyll woodlands on sandy soils
over sandstone.
Conservation status:
Not considered to be at risk (IUCN Red List category LR,lc).
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Photo Ken Hill
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Description:
Plants acaulescent, stem 10-25 cm diam.
Leaves 2-7 in crown, bright green, semiglossy, 50-100 cm long,
strongly to moderately keeled, with 70-110 leaflets; rachis not spirally
twisted to moderately spirally twisted, straight, stiff or recurved,
arching stiffly downwards; petiole 12-22 cm long, straight, unarmed, 7-10 mm
wide at lowest leaflets; basal leaflets not reducing to spines.
Leaflets simple or dichotomously branched, concolorous or weakly
discolorous; margins flat to recurved (slightly); apex entire, not spinescent;
median leaflets 120-260 mm long, 5-9 mm wide (ultimate segments 3-5).
Pollen cones fusiform, 16-25 cm long, 4.5-5.5 cm diam.;
microsporophyll lamina 16-24 mm long, 13-19 mm wide; apical spine 2-15 mm long.
Seed cones ovoid, 13-20 cm long, 7-9 cm diam.; megasporophyll lamina
35-45 mm long, megasporophyll with an expanded peltate apex 45-50 mm wide, 15-20
mm high; apical spine 2-30 mm long.
Seeds ovoid, 26-30 mm long, 22-25 mm wide; sarcotesta red.