Australian Tropical Rainforest Plants - Online edition
Musa jackeyi W.Hill
Hill, W. (1874) Report on the Brisbane Botanic Garden : 7. Type: Queensland, Johnstone River, collector unknown; holo: BRI?.
Banana, Erect; Erect Banana; Banana, Wild; Wild Banana
Grows to a height of 10 m or more with a 'stem' diameter of 45 cm but also flowers and fruits when smaller.
Leaf blades quite large, about 200-450 x 60 cm, petioles about 50 cm long or more. Petiole and midrib strong and fibrous. 'Stem' formed by the overlapping petiole bases. Lateral veins run at an angle of almost 90 to the margin of the leaf blade where they +/- amalgamate. Reticulate veins form rectangles with the lateral veins. Midrib about 1.4-1.5 cm wide.
Inflorescence large (up to 1.5 m long), erect (or erect except for the nodding apex) following pollination of the female flowers. Terminal flowers male, enclosed in an ovoid, multilayered sheath of overlapping bracts. Female and/or hermaphrodite flowers confined to the lower part of the inflorescence. Perianth consists of two parts, the longer parts is an open tube of four or five fused lobes and the shorter part, which is about half as long, consists of one lobe only. In male flowers the larger tepal is about 38-50 x 8-11 mm. Pedicel about 1-2 mm long. Pollen white (?). In hermaphrodite flowers the larger tepal is about 37-45 x 10-11 mm. Pedicel short or absent.
First pair of true leaves apiculate at the apex. At the tenth leaf stage: seedling completely glabrous; seed still attached to the base of the seedling. Stem composed of sheathing petioles or leaf bases. Leaf blade narrowly elliptic and drawn out into a fine point at the apex. Midrib depressed on the upper surface of the leaf blade. Lateral veins and reticulate veins form a very regular symmetrical pattern of squares. Seed germination time 35 to 98 days.