Juncus psammophilus L.A.S.Johnson APNI* Synonyms: Juncus sp. Q sensu Jacobs & Pickard (1981) APNI*
Juncus sp. Q APNI*
Description: Strongly rhizomatous, dioecious perennial. Culms terete, 65–125 cm long, 1.6–3.2 mm diam., ± soft, yellow-green; culm striations 35–60; pith continuous, often interrupted below.
Cataphylls 12–28 cm long, lax, abaxially golden brown to dark yellow-brown or occasionally dark red-brown at base, adaxially golden brown.
Inflorescence pseudolateral, diffuse, 5–10 cm long; flowers numerous, solitary; lowest involucral bract 8–32 cm long, longer than inflorescence. Tepals straw-brown or occasionally red-tinged, with broad hyaline to yellowish margins; outer tepals 1.5–2.6 mm long, longer than or equalling inner tepals. Stamens 6, shorter than outer tepals; anthers 0.7–0.9 mm long; female flowers with 6 staminodes.
Capsule shorter than to slightly longer than outer tepals, ellipsoid to obovoid, obtuse, not or scarcely apiculate, golden brown.
Flowering: spring–summer.
Distribution and occurrence: On the Western Slopes north from Grenfell, extending east to near Torrington, west to Mungindi and Nyngan. Grows along creeks that have at least a surface layer of sand (sometimes with sand overlain by clayey deposits).
NSW subdivisions: NT, NWS, CWS, NWP
Other Australian states: Qld Vic.
Culms have sunken stomates (as seen in cross-section) and crowded striations. Unusual in being dioecious.
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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