PlantNET Home DONATE TODAY | PlantNET Home | Search NSW Flora | Contact Us  
FloraOnline
Introduction
Plant Name Search
Index Search
Spatial Search
Identification Keys
Classification
Glossary
WeedAlert
Telopea Journal
Other Data Sources
NEW SOUTH WALES FLORA ONLINE Printable Page

Pterostylis jonesii G.N.Backh.
Family Orchidaceae
Pterostylis jonesii G.N.Backh. APNI*

Synonyms: Bunochilus montanus D.L.Jones APNI*
Pterostylis montana (D.L.Jones) G.N.Backh. APNI*

Description: Terrestrial herb

Rosette stalk 20–80 mm long; leaves 3 to 6, lanceolate, 6–25 mm long by 2–6 mm wide, margins entire and plane or crinkled; petioles to 3 mm long.

Flowering plants 15–70 cm tall, stem leaves 5 to 7, linear-lanceolate 10–70 mm long by 3–5 mm wide. Flowers 1–11, porrect, remote, 13–16 mm long by 6–8 mm wide, translucent dark green with indistinct darker green stripes, nitid; sepal tips bright orange-brown. Dorsal sepal 13–17 mm long when flattened, shallowly curved. Synsepalum elliptical to broadly elliptical, 12–15 mm long by 6–8 mm wide, flat, notched to 4–5 mm deep; margins curved, tips divergent to 3–5 mm apart. Petals obliquely oblong, narrow at base where c. 0.8 mm wide, 12–14 mm long by 3.5–4.0 mm wide; anterior margin shallowly curved, basal flanges narrow and elongate. Labellum oblong to oblong-ovate, 5.5–6.5 mm long by 2.5 mm wide, tawny or brown with a dark brown to black basal mound and black central stripe; surface cells bead-like, with numerous acicular cells to 0.5 mm long toward the base; basal mound prominent, recurved, obtuse; margins parallel, lateral lobes well-developed; midlobe 1.5–2.0 mm long, shortly notched, the lobes acute; apex upcurved.


Flowering: August–November

Distribution and occurrence: Southern New South Wales, also ACT, and north-eastern Victoria, between 500 and 1300 m elevation.

In wet sclerophyll forest, and open montane forest, in moist areas and on drier slopes and ridges. Often on roadside verges and embankments.
NSW subdivisions: ST
Other Australian states: Vic.
AVH map***

This is essentially a robust montane to alpine form of Pterostylis melagramma distinguished by its larger flowers with duller sepal tip markings, and the paler labellum that is ovate-oblong rather than 'distinctly oblong' (Jones 2006). Originally described as Bunochilus montanus D.L.Jones, that species epithet preoccupied in Pterostylis by P. montana Hatch so a new name was proposed when Backhouse (2007) transferred Bunochilus montanus to Pterostylis.

Text by Matt A.M. Renner (12 Dec 2019) based on Jones (2006)
Taxon concept: Jones DL (2006) Towards a revision of Bunochilus D.L.Jones & M.A.Clem. Australian Orchid Research 5: 112–142. Backhouse GN (2007) A new name in the terrestrial orchid genus Pterostylis R.Br. (Orchidaceae) for Victoria. The Victorian Naturalist 124(6): 341.


APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET