Pterostylis sp. aff. plumosa (Anglesea)

sensu Bishop, Field Guide Orchids New South Wales & Victoria 75 (1996) APNI

Taxonomic status:Accepted

Occurrence status:Endemic

Establishment means:Native

Threat status:Victoria: rare (r)

Flowering plant to 35 cm tall, stem leaves 2–4, closely sheathing. Rosette leaves 5–20, elliptic, 1–4.5 cm long, 4–12 mm wide, petiolate, margins entire. Flower 35–40 mm long, erect, translucent with dark green lines and reticulations, often shiny; galea erect in the basal two-thirds then curved forwards; dorsal sepal with an upturned filiform point 4–6 mm long; lateral sepals deflexed, conjoined part narrow, margins incurved, with a prominent thickened green pad, free points linear, 13–16 mm long, parallel or slightly divergent. Labellum 15–25 mm long, broadest near the base (c. 1.5 mm across), tapered to a linear-filiform central section and with a green apical knob c. 4.5 mm long and c. 3 mm wide, all margins, except those of the knob, bearing moderately dense bright yellow hairs 3–6 mm long, the distal two-thirds protruding from the sinus in the set position. Flowers Sep.–Oct.

OtP. Endemic to Victoria where apparently confined to heathland and heathy woodland in the Anglesea area, on well-drained sandy soils.

Similar to Pterostylis plumosa, but generally more robust with slightly larger flowers and a green knob on the labellum apex.

This has been formally described as Plumatichilos unicornis D.L.Jones, (Jones 2018b) but to date no combination has been made for it under Pterostylis.

Created by: Jeff Jeanes, 2015-06-09
Updated by: Neville Walsh, 2019-08-12
 
References

Jones, D.L. (2018 b). Six new species of Plumatichilos (Orchidaceae: Pterostylidinae) from South-eastern Australia and a new species from New Zealand., Australian Orchid Review 83(4): 26-44.

Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Pterostylis
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Pterostylis sp. aff. plumosa (Anglesea) in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Pterostylis sp. aff. plumosa (Anglesea) in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Otway Plain present native

State distribution

Distribution map
State
Victoria