Etymology:
Latin, concinnus, neat or elegant, in reference to the compact and tidy habit.
Historical notes: Distinguishing features: Distinguished by the stiff, strongly spirally twisted leaves with long, more or less terete petioles, and stiff, dark green leaflets with inrolled margins. Distribution and habitat: A widespread but sporadic species, usually on sloping country in dry sclerophyll woodland through the upper Hunter Valley and north to the hills and ranges around the Liverpool Plains. Conservation status: Not considered to be at risk (IUCN Red List category LR,lc).
Description:
Plants acaulescent, stem 8-15 cm diam. Leaves 1-5 in crown, deep green, semiglossy, 50-90 cm long, strongly to moderately keeled, with 80-120 leaflets; rachis strongly spirally twisted, straight, stiff; petiole 9-24 cm long, straight, unarmed, 4-7 mm wide at lowest leaflets; basal leaflets not reducing to spines. Leaflets simple, strongly discolorous; margins flat, or incurved (slightly); apex entire, not spinescent; median leaflets 140-210 mm long, 4-6 mm wide. Pollen cones fusiform, 14-22 cm long, 4-4.5 cm diam.; microsporophyll lamina 16-20 mm long, 14-17 mm wide; apical spine 0-13 mm long. Seed cones ovoid, 13-15 cm long, 7-8 cm diam.; megasporophyll lamina 25-30 mm long, megasporophyll with an expanded peltate apex 40-45 mm wide, 10-15 mm high; apical spine 2-30 mm long. Seeds ovoid, 21-26 mm long, 18-24 mm wide; sarcotesta red.
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