Normanbya normanbyi is visually very similar to the more well-known Foxtail palm but is slightly smaller in all respects.[7] It is a single-stemmed palm with attractive "bushy" fronds, similar to a bottlebrush. It grows to a height of 30 m (98 ft) with a small crown of fronds each measuring around 2.5 m (8 ft 2 in) long with a petiole about 30 cm (12 in) long.[5][8] The fronds have 75-95 whorled pinnae (leaflets) up to 45 cm (18 in) in length, each of which are divided longitudinally into 7-11 radiating segments, giving the fronds the bushy appearance. The pinnae are dark green on the upper surface and silvery underneath and the tips are abruptly truncated (like a fishtail).[5][8]
The inflorescence (grouping of flowers) is a panicle and is borne on the trunk just below the crownshaft. They are around 90 cm (35 in) long and the sessile (stemless) green flowers are grouped in threes, each with one pistillate (functionally female) and two staminate (functionally male) flowers. The staminate flowers have 24 to 40 stamens, the pistillate flowers have three strongly recurved stigmas.[5][9]
Ripe fruit measure 35 to 50 mm (1.4 to 2.0 in) long and 25 to 40 mm (0.98 to 1.57 in) wide, and are pink to reddish-brown in colour. They contain a single seed about 35 by 25 mm (1.38 by 0.98 in).[5]
Fruits of the Black palm are eaten by cassowaries and sulphur-crested cockatoos.[9] Whilst the cassowary swallows the fruit whole and passes the seed out in its droppings, thereby assisting in spreading the seeds throughout the forest, the cockatoos will remove the fruit's flesh and chew into the seeds themselves, destroying their ability to germinate.
The Kuku Yalanji people, who are the original inhabitants of the area where this palm is found, had many uses for the plant. The very hard timber was split along the length of the trunk to make spears, clapsticks, nulla nullas and digging sticks.[12][13] The buds and new shoots can be eaten and a fibre made from the crownshafts was used as a string to tie spear heads to the shafts, fish traps and cradles.[13]
Conservation status
In the IUCN's Red List, this species is assessed as vulnerable,[2] but in the Australian state of Queensland (where the plant is endemic) it is considered to be of least concern.[1]
The IUCN cites "land clearance" as the justification for the vulnerable status of Normanbya normanbyi.[2] While much of the area where it grows is protected under both Queensland's National Park system and the World Heritage listing, there is also a significant portion of lowland rainforest that is privately owned, uncleared land, and which has an uncertain future in regard to the preservation of the natural habitat.[14]
Cultivation
Normanbya normanbyi is visually very similar to the very popular Foxtail palm (Wodyetia bifurcata) but is not as widely planted as the latter. It may be grown from fresh seed[15] and is also available at many plant nurseries. It requires a shady position when young, well-drained soil and plentiful water.[6][16]
^Nielsen, Lloyd (1997). Daintree: Jewel of Tropical North Queensland. Mount Molloy, Queensland: Lloyd Nielsen. p. 16. ISBN0-646-41153-5.
^ abRoberts, John; Fisher, Colin (CJ); Gibson, Roy (1995). A Guide to Traditional Aboriginal Rainforest Plant Use. Mossman, Queensland: Bamanga Bubu Ngadimumku Inc. p. 15. ISBN0-646-22991-5.
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