Archontophoenix tuckeri Dowe
Dowe, J.L. & Hodel, D.R. (1994) Austrobaileya 4(2): 240, fig. 1 D1-D3. Type: Queensland. Cook District: Upper Peach River, Bonanza Creek, common at waters edge in rainforest, 240 m altitude, Aug 1948, Brass 19831 (holo: BRI [AQ325430]).
Tucker's Alexandra Palm
Palm to 20 m tall. Trunk to 26 cm DBH expanding to 60 cm at the base and distinctly tapered to the apex, smooth becoming fissured with age. Leaf scars prominent.
Leaves 7-12 and up to 3.15 m long, held flat or with a moderate twist with 43-68 pinnae per side; new leaves often with a bronze red tinge. Crownshaft 84-130 cm long, waxy light- to lime green, slightly bulging at the base, thinly textured, tapered towards apex, light brown and glossy. Petiole to 44 cm long, deeply concave below wnd convex below, to 4 cm wide in basal part. Rachis to 175 cm long, with a broad flat ridge becoming sharp in the front portion. Pinnae to 93 x 5 cm, apical third frquently semi-pendulous. Silver-grey abaxially due to the dense silvery scales. Midrib prominent on both surfaces with up to 8 prominent secondary ribs abaxially.
Inflorescence 30-60 x 60-70 cm, axes glabrous. Prophyll 40-45 x 11-12 cm, thin, fibry, papery, winged, beaked, silvery on the adaxial surface. Peduncular bract to 37 x 9 cm, tubular and thin. Third bract to 15 x 15 mm. Peduncle to 12 x 4.5 x 2 cm, terete, winged at base. Rachis to 50 cm long, angular, with 8 main branches. Rachillae stout, to 30 cm long and prominently zig-zagged. Flowers white. Triads throughout rachillae. Floral bracts prominent, sharp and cup-shaped. Staminate flowers 6.5-7 mm long opening to 11 mm wide. Sepals 1.5-3 mm long. Petals 4.5-7 x 1.8-3.6 mm, falcate, covered in rusty scales. Stamens 13-19. Filaments curved and with rusty brown scales. Pistillode about as long as stamens and longitudinally grooved, basal portion with rusty scales. Pistillate flowers globose.
Features not available.
Distinguished by: undersurface of pinnae with silver-grey scales, ramenta (large irregular scales on midrib) lacking; perianth white-cream, fruit ovoid, 15-25 mm; mesocarp fruit fibres in two layers, outer layer thin, occasionally branched, inner layer thick, flat, to 3 mm wide, mostly branched. Fibres compact (not free) when ripe.