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Discussion

marcycad wrote:

Yesterday

This may be X. resinosa, however, the pre-anthesis packing-bract colour appears lighter brown than what is typically seen in X. resinosa, and is more consistent with X. concava. X. resinosa spike is usually a darker-brown colour than what appears in this image, however this may just be the camera not picking up the correct colour tone. For me it remains inconclusive as to which of these two affiliated species it may be.

Xanthorrhoea resinosa

marcycad wrote:

Yesterday

The flower scape lengths in relation to the spike is characteristic of X. resinosa. In X. australis I would expect to see reduced scape lengths and longer spikes across this population.

Xanthorrhoea resinosa

marcycad wrote:

Yesterday

I was just adding some additional information as verification for those unaware.

Xanthorrhoea glauca subsp. angustifolia

marcycad wrote:

Yesterday

These specimens may be X. johnsonii, however, I can detect no morphological characteristics that separate these from X. glauca or X. malacophylla based upon the photographic images. A description of the leaf colour (green or glaucous) and characteristics (easy to snap when flexed or resistant to break, or hard and resistant when compressed between thumb and forefinger or spongey-like), and cross-section leaf shape (taken mid-way the length of the leaf), could be used as determinants to assist with a species ID.

Xanthorrhoea johnsonii

marcycad wrote:

Yesterday

This observation appears more like X. glauca or possibly X. malacophylla than X. johnsonii. The crowns are very full and heavy, the tall specimen in the second image looks to have at least two crowns, and although X. johnsonii may develop multiple crowns, the species is largely unbranched and simple. Whilst these plants may be X. johnsonii, and without the presence of any flower spike, leaf close-up, leaf colour or cross-section profile, I can detect no morphological characteristics that can determine these specimens to species level. Tapirlord, out of interest, what identification markers did you use to ID these as X. johnsonii?

Xanthorrhoea johnsonii