Linospadix palmerianus

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Figure 1. L. palmerianus

Contents

Synonymy:

Bacularia palmeriana

Distribution:

Australia. North-east Queensland. Confined to Mts. Bartle Frere and Bellenden-Ker, in rainforest, on granite, metamorphics and occasionally on shallow basalts overlying metamorphics, from 300 - 1600m elevation.

Derivation of Name:

Named for Edward Palmer, M. L. A., of whom Bailey wrote "indebted for much useful information as to the uses made by the aboriginals of our indigenous plants".

Description:

Clustering, small palm. Stems 1-6, to 3 m tall, 5-20 nun diameter; internodes elongate, green; crown with 8-12 leaves. Leaves regularly segmented with united pinnae, most often with two segments either side of rachis, infrequently simply bi~d, segments broadly adnate to the rachis, or regularly and finely pinnate; petiole 5. 5 - 13 cm long; pinnae 2-24 per leaf, dull to semi-glossy dark green above, lighter green below; midrib prominent on both surfaces, veins numerous and prominent on both surfaces, terminal pinnae broader than laterals; lamina, when backlit under 10x magnification, has numerous circular clear 'cells' to 0.1mm wide linearly parallel to midrib and veins. Inflorescence to 60cm long. Staminate flowers bullet-shaped in bud, glabrous, to 3mm long by 2mm wide; petals apically rounded, green at anthesis, not widely opening, deeply striate in the dried state; stamens 6-9; connective not extending beyond the anthers; anthers oblong. Fruit elongate/cylindrical, 10-15mm long by 5-7 mm wide, yellow or red at maturity; epicarp smooth or moderately rugose. Seed elongate/ellipsoid.


Linospadix palmeriana is the most consistently diminutive species in the genus. Plants are most often less than 1 m tall, with stems less than 10 mm diameter. Leaf lamina is rigid with ribs raised on both sides. Linospadix palmeriana - as Bacularia palmeriana - was described by F. M. Bailey from a collection taken at 700 m altitude on Mt. Bellenden-Ker, Queensland.

Figure 2. L. palmerianus infructescence
Figure 3. L. palmerianus
Figure 4. L. palmerianus aequiseg form.


Contributed by:

John Dowe (Text - from Palms & Cycads No. 58, Jan-Mar 1998)
Ian Edwards (Figure 1,2,3&4)

External Links:

Kew, PalmWeb, eMonocot, JSTOR, Trebrown, ATRP

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