Ptilotus comatus is a species of flowering plant in the family Amaranthaceae and is endemic to the north of the Northern Territory. It is an ephemeralherb, with more or less sessile, narrowly linear to narrowly elliptic and hairy leaves, and cylindrical spikes of sometimes more than 80 reddish-purple flowers.
Ptilotus comatus is an ephemeral herb up to 60cm (24in) tall with upright, hairy, greyish-green stems. Its leaves are arranged alternately, more or less sessile, narrowly linear to narrowly elliptic 5–15mm (0.20–0.59in) long and 0.6–1.5mm (0.024–0.059in) wide. The flowers are densely arranged in up to 30 oval or cylindrical spikes, the large spikes 10–40mm (0.39–1.57in) long and 5–8mm (0.20–0.31in) wide with sometimes more than 80 reddish-purple flowers. The bracts are narrowly oblong to egg-shaped, about 3mm (0.12in) long and the bracteoles are 1.6–2mm (0.063–0.079in) long. The outer tepals are 3.2–3.6mm (0.13–0.14in) long, the inner tepals 3.3–3.5mm (0.13–0.14in) long. There are five stamens and the style is 0.5–0.8mm (0.020–0.031in) long, the ovary1.2mm (0.047in) long.[2]
Taxonomy
Ptilotus comatus was first formally described in 1984 by Gerhard Benl in the journal Muelleria from specimens collected 1km (0.62mi) north of the Nabarlek airstrip in 1979.[2][3]
Distribution and habitat
Ptilotus comatus has been recorded as growing in forest on sand, "sandy depressions in broken sandstone" and in a "dry open sandy area" in a restricted area east of Oenpelli in Arnhem Land.[2][4]
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