| Description |
Pseudostem
up to 7 m tall and 60 cms in girth at the base ; green or sometimes blackish,
predominantly brown at the base from persistent dead sheaths. Sap very variable,
white, pink or violet. Rhizomes short, the young suckers arising erect, but close to
the parent stem ; not seen forming large clumps. Shoulder green, coloured with
irregular blackish-brown markings, with an irregular and rather ragged but broad more or
less appressed scarious margin. Petiole green or often blackish on the underside
with scarious edges which more or less enclose the small canal ; TS
ratio 0.3. Leaf lamina yellow-green above slightly paler below, not waxy,
right-handed with auriculate basal lobes ; PB ratio 3.5 - 4.0.
Peduncle
green, glabrous or hairy. Bunch variable in habit, from curving first upwards and
then down, to hanging almost entirely vertically downwards, but typically curving more or
less diagonally downwards, very lax. Fruit apparently without tropic response,
standing out rather irregularly all round the stem. Basal bracts long, curling
backwards, quickly deciduous. Basal flowers female, with poorly developed, or
entirely without, staminodes. Pedicels long for the size of the fruit, up to 2 cm.
Young fruit yellowish-green, glabrous, with four ovule rows per loculus.
Mature fruit bright coppery-orange with dull orange-coloured pulp, dehiscent, the skin
splitting into irregular segments and curling backwards, not highly aromatic, more or less
ovoid about twice as long as wide. Seeds c. 6 mm in diameter, irregularly and
sharply angled but with a very smooth surface ; hilum more or less flush with the testa
surface, without a raised collar ; umbo small, slightly elevated or obsolete.
Male
peduncle descending vertically. Male bud convolute or slightly imbricate, rather
less than twice as long as broad, deep or pale pink to creamy-white. Male bracts,
coloured as in the male bud both inside and out, lifting to an angle well above the
horizontal, not curling, quickly deciduous. Male flower with the free tepal almost
as long as the compound tepal ; compound tepal cream with yellow tips to the lobes ; free
tepal translucent white, somewhat concave, ovate with a truncated apex with small teeth
and no subapical wrinkle. Male flowers falling together from each bract, not
separating. Chromosome number 2n = 20.
(Argent
1976). |
| Comments |
TS ratio is the vertical depth of the petiole canal divided by the vertical
depth of the petiole tissue beneath.
PB ratio is the ratio of petiole length to leaf blade length.
As applied by Argent these ratios should strictly be calculated for the fourth-last, fully
expanded vegetative leaf below the inflorescence.
This plant was discovered first on the island of Halmahera by David Fairchild and Hugh
Curran on a collecting expedition for the Fairchild Tropical Garden. The type
collection, Fairchild & Curran 388, is at Kew. The name derives from its habitat
on the banks of the Loloda River; there are a number of geographic features with this name
on Halmahera. The
plant was recollected from its type locality by Nasution in 1982. Argent found the
plant in the Bewani-Torricelli mountains in north-west Papua New Guinea and a Kew
expedition to Irian Jaya subsequently found the plant there. There seems to be one
slight difference between plants from the easternmost and westernmost parts of the range
in that the latter have scarious shoulder margins whereas the former do not.
Musa lolodensis is one of only six bananas currently known in which the fruit
splits (or dehisces or is schizocarpic) on maturity, the others are Musa hirta from
Borneo, Musa johnsii from Papua (Irian Jaya), Musa velutina from
north-east India, Musa schizocarpa from Papua New Guinea, and Musella
lasiocarpa from China and northern Indo-China.
Images:
There
are three images of Musa lolodensis. |