Macrozamia pauli-guilielmi Hill & Muell. ex F.Muell.

Cycad (en)

Species

Gymnosperms > Cycadales > Zamiaceae > Macrozamia

Characteristics

Plants acaulescent; stem 10-25 cm diam.; 1-6 leaves in crown. Leaves 60-90 cm long, slightly to moderately keeled, with 130-190 pinnae, mid-green, highly glossy; petiole 12-20 cm long, 7-9 mm wide at lowest pinna; rachis strongly spirally twisted. Basal pinnae not reducing to spines. Median pinnae simple, 15-40 cm long, 2.5-4 mm wide, strongly discolorous; margins incurved; apex entire, not spinescent. Pollen cones fusiform, 8-14 cm long, 3.5-5 cm diam.; microsporophyll lamina 14-18 mm long, 8-11 mm wide; apical spine 0-8 mm long. Seed cones ovoid, 9-12 cm long, 5-6.5 cm diam.; megasporophyll with an expanded, peltate apex 25-30 mm wide and 10-14 mm long; apical spine 2-25 mm long. Seeds ovoid, 20-25 mm long, 15-20 mm wide; sarcotesta red.
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A small cycad. It has an oval underground trunk. This is 25 cm long and 20 cm across. The young leaves are light green and erect. There are 1-6 mature leaves in an erect open crown. They are 0.5-1.2 m long by 30-50 cm wide. The are dark green and dull. The stalk is twisted making the leaflets look as if they are in rings. The leaf stalk is 5-15 cm long. There are 140-200 leaflets on each leaf. The cones are different. The male cone is 10-20 cm long by 4-6 cm wide. They are usually curved and green. There are 1-3 per plant. The female cones are 8-15 cm long by 6-8 cm wide and barrel shaped. They are green and there are 1-2 per plant. The seeds are 2-2.5 cm long by 1.5-2 cm wide. They are oval and orange or red.
Life form perennial
Growth form -
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
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Nitrogen fixer nostocaceae
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Environment

They grow naturally in coastal districts of Southern Queensland in Australia. They are often on sandy soils. They are in subtropical climates. They can tolerate mdoerate frosts. They can grow in full sun or light shade.
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Scattered in open woodland, almost always on siliceous sand deposits from old beach dunes.
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Hardiness (USDA) 8-12

Usage

Uses medicinal poison
Edible nuts
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Cultivation

Plants can be grown from seeds or from slices from the trunk.
Mode seedlings
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Images

Macrozamia pauli-guilielmi unspecified picture

Distribution

Macrozamia pauli-guilielmi world distribution map, present in Australia

Conservation status

Macrozamia pauli-guilielmi threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:297187-1
WFO ID wfo-0000451722
COL ID 3XCZL
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Zamia mackenii Macrozamia pauli-guilielmi Macrozamia tenuifolia Encephalartos pauli-guilielmi Macrozamia plumosa Macrozamia spiralis var. cylindracea Macrozamia pauli-guilielmi subsp. pauli-guilielmi