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Juncus thompsonianus L.A.S.Johnson
Family Juncaceae
Juncus thompsonianus L.A.S.Johnson APNI*

Synonyms: Juncus sp. M sensu Jacobs & Pickard (1981) APNI*

Description: Dwarf, shortly rhizomatous perennial, mat-forming. Culms terete, 0.5–3.5 cm long, 0.3–0.5 mm diam.

Leaves unitubulose, spread along culms, longer than (usually much longer than) culms; blade terete, acute, 0.3–0.5 mm diam.; auricles c. 0.5 mm long.

Inflorescence terminal, c. 0.5 cm long, 1–3 (rarely to 6)-flowered; flowers clustered (or occasionally solitary) at apex of branches, 2 or 3 per cluster and 1 or occasionally 2 clusters per inflorescence; involucral bract 1, well-developed, 0.2–2 cm long, longer than or equalling (often much longer than) inflorescence. Tepals straw-brown, occasionally red-tinged, with broad hyaline margins; outer tepals 1.7–2.5 mm long, shorter than inner tepals.

Capsule slightly longer than or equalling inner tepals, ovoid, abruptly acuminate, short-beaked, golden brown.


Herbarium
Sheet

Herbarium
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Type
Specimen

Flowering: summer.

Distribution and occurrence: South from Kiandra district on higher tablelands; may occur on the Brindabella Range.

Grows in moist and boggy subalpine and alpine situations.
NSW subdivisions: ST
Other Australian states: Vic.
AVH map***

Stamens are unusually long in this subgenus, equalling or exceeding the outer tepals.

Text by K. L. Wilson, L. A. S. Johnson & P. Bankoff (1993); edited KL Wilson (July 2016, Nov 2022)
Taxon concept: Flora of NSW 4 (1993)


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.
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