Palmae

Calameae

Korthalsia jala J. Dransf.

• Taxon no. : 180
• Status : Accepted
• Genus : Korthalsia
• Genus Author : Blume
• Specie : jala
• Specie Author: J. Dransf.
• Rank : Species
• References:
[ 1781], [ 1782], [ 3199],

Descriptors:

• *Bracts subtending rachilla: relation : shorter than rachilla [ 3199],
• *Flowering: expression : hermaphroditic
• *Fruit: exudate : without dragon's blood
• *Habit: form : Climber [ 3199],
• *Inflorescence: flowering behaviour : hapaxanthic [ 3199],
• *Inflorescence: position : suprafoliar [ 3199],
• *Inflorescence: relative length : shorter than leaves [ 3199],
• *Inflorescence: terminal form : not flagelliform [ 3199],
• *Inflorescences: rooting : not rooting at tips [ 3199],
• *Knee (leaf sheath): presence : without knee [ 3199],
• *Lamina (living): abaxial surface colour : chalky-white [ 3199],
• *Lamina scales: presence : absent [ 3199],
• *Lamina: indumentum : with indumentum [ 3199],
• *Lamina: spinules (minute spines) : without spinules [ 3199],
• *Leaf rachis: armature : armed [ 3199],
• *Leaf rachis: hairs : without hairs [ 3199],
• *Leaf rachis: indumentum : without indumentum [ 3199],
• *Leaf rachis: relative length : 2-3 times as long as petiole [ 3199],
• *Leaf sheath indumentum: presence : absent [ 3199],
• *Leaf sheath mouth: spines : spines scarcely different from the rest [ 1781], [ 3199],
• *Leaf sheath scales: colour : chocolate-brown [ 3199],
• *Leaf sheath scales: persistence : deciduous [ 3199],
• *Leaf sheath scales: presence : present [ 3199],
• *Leaf sheath spines (excluding mouth spines): size : up to 3cm long (max) [ 3199],
• *Leaf sheath spines: arrangement : grouped [ 3199],
• *Leaf sheath spines: base : not conspicuously bulbous-based [ 3199],
• *Leaf sheath spines: colour of base : not yellow [ 3199],
• *Leaf sheath spines: curvature : not reflexed [ 3199],
• *Leaf sheath spines: group arrangements : in irregular groups [ 3199], in partial whorls [ 3199],
• *Leaf sheath spines: margins : with smooth margins [ 3199],
• *Leaf sheath spines: orientation : pointing in several directions [ 3199],
• *Leaf sheath spines: persistence : persistent [ 3199],
• *Leaf sheath spines: presence : abundant [ 3199],
• *Leaf sheath spines: shape in T.S. : flattened [ 3199],
• *Leaf sheath spines: shape : triangular (not tapering) (1cm< x < 3cm long) [ 3199],
• *Leaf sheath spines: types : of uniform size [ 3199],
• *Leaf sheath: colour : other [ 3199],
• *Leaf sheath: flagellum : without flagellum [ 3199],
• *Leaf sheath: hairs or spicules : without rigid hairs or spicules [ 3199],
• *Leaf sheath: surface : without horizontal ridges [ 3199],
• *Leaf: cirrus : cirrate [ 3199],
• *Leaf: lamina colour : not mottled [ 3199],
• *Leaflet apex: shape : praemorse [ 3199],
• *Leaflet bristles: presence : absent [ 3199],
• *Leaflet margins: form : praemorse [ 3199],
• *Leaflet midribs: golen bristles : without golden bristles [ 3199],
• *Leaflet midribs: prominence : similar to other veins [ 3199],
• *Leaflet: plication : scarcely plicate [ 3199],
• *Leaflets (individual): max width : more than 6cm wide [ 3199],
• *Leaflets (not grouped): arrangement : subregular [ 3199],
• *Leaflets: arrangement : not grouped [ 3199],
• *Leaflets: colour : discolorous [ 3199],
• *Leaflets: divarication : not divaricate [ 3199],
• *Leaflets: insertion : stalked (with ansa) [ 3199],
• *Leaflets: number : 1 > x < 10 on each side of rachis [ 3199],
• *Leaflets: orientation : (more or less) in one plane [ 3199],
• *Leaflets: shape : rhomboid [ 3199],
• *Leaflets: venation : radiating [ 3199],
• *Lowest leaflets: orientation : not reflexed across stem [ 3199],
• *Ocrea: ant association : without ant association [ 3199],
• *Ocrea: armature : armed [ 3199],
• *Ocrea: character : net-like [ 3199],
• *Ocrea: position : not diverging at an angle [ 3199],
• *Ocrea: presence : present [ 3199],
• *Ocrea: size : up to 1 m [ 3199],
• *Partial inflorescences: presence : present [ 3199],
• *Petiole base: auricles : without auricles [ 3199],
• *Petiole spines: arrangement : regularly arranged, not grouped [ 3199],
• *Petiole: armature : armed [ 3199],
• *Petiole: blotchiness : evenly coloured [ 3199],
• *Petiole: indumentum : without indumentum [ 3199],
• *Petiole: presence : present [ 3199],
• *Prophyll: relation : not enclosing inflorescence at maturity [ 3199],
• *Rachilla bracts: net-like : not net-like [ 3199],
• *Rachillae (pistillate): arrangement : not congested [ 3199],
• *Rachillae: armature : unarmed [ 3199],
• *Rachillae: colour : other [ 3199],
• *Shoots : Clustering [ 3199],
• *Stem (with sheath): diammeter : > 40mm [ 3199],
• *Stem: branching : branching in canopy [ 3199],
• *Terminal leaflets: fusion : more or less free [ 3199],
• *Vegetation : Hill RainforestLowland rainforest [ 3199],

Geographic Distribution:

• Asia-Malesia
[ 1781],
• Brunei
[ 1781],
• Sabah
[ 1781],
• Sarawak
[ 1781],

Vernacular Name:

• Wi Dahanan (Ib.) [ 1781],

Uses:

• Cane [ 1781],