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.
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.
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
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