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Austrostipa rudis (Spreng.) S.W.L.Jacobs & J.Everett
Family Poaceae
Austrostipa rudis (Spreng.) S.W.L.Jacobs & J.Everett APNI*

Synonyms: Stipa rudis Spreng. APNI*

Description: Caespitose perennial to 1.2 m high, with conspicuously extravaginal shoots.

Leaves with ligule ovate to ovate-truncate, slightly laciniate, long- to short-ciliate, 0.5–2 mm long; auricles slightly thickened, with tufts of long to short spreading hairs; blade usually inrolled, 2–5 mm wide near the base, scabrous to pubescent, upper surface ribbed.

Panicle exserted or the base concealed, loosely contracted to spreading, to 50 cm long. Spikelets gaping, 8–15 mm long (excluding awn). Glumes unequal to subequal, narrow-truncate or broad-obtuse. Lemma 5–11.5 mm long, granular at the base, tuberculate upwards, with sparse white to reddish brown hairs below; coma obscure, of few hairs to 1 mm long, or absent; lobe 1, ≤ 0.25 mm long, or absent. Callus gently curved with reddish brown to white hairs. Awn gently to strongly twice bent, 2–9 cm long. Palea 0.5–1.2 mm shorter than the lemma.

Distribution and occurrence: in woodland; coast and ranges.
NSW subdivisions: NC, CC, SC, NT, CT, ST
Other Australian states: Qld Vic. Tas.
AVH map***

Text by SWL Jacobs and J Everett 1993 (as Stipa)
Taxon concept: Flora NSW vol 4 (1993)

 Key to the subspecies 
1Awn usually <6 cm long, occasionally to 6.5 cm long, column usually <25 mm long, occasionally to 30 mm long; glumes firm to the tip or, especially the upper, membranous at the very tip2
Awn 6–9 cm long, column 32–45 mm long; both glumes broad-obtuse with 1–2 mm of delicately membranous tip, upper glume 11–14.5 mm longsubsp. australis
2Callus 1.5–2.5 mm long, usually >20% the length of the floret (excluding awn); column 20–25 mm long; lower glume narrow-truncate and firm or membranous at the tip, upper glume membranous at the tip, 9–12.5 mm longsubsp. rudis
Callus 0.8–1.7 mm long, usually <20% the length of the floret (excluding awn); column <20 mm long; glumes narrow-truncate, firm at the tip, the upper glume 7–10 mm long
                       Back to 1
subsp. nervosa

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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