Seeds of South Australia
Austrostipa acrociliata (Gramineae)
Graceful Spear-grass
List of species for Austrostipa
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Seed collecting:
December to April
Herbarium regions:
Nullarbor, Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Lucindale (NCP03)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))   [in Desert Camp, edge of range]
Tintinara (NCP04) 
 Near Threatened
Fleurieu (KAN02)Kanmantoo
 Rare   (IUCN: RA d(ii))   [eastern fringe; conserved]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))   [edge of range; likes mallee on red loam]
Broughton (FLB02) 
 Least Concern
Olary Spur (FLB03) 
 Least Concern
Southern Flinders (FLB04) 
 Least Concern
Northern Flinders (FLB05) 
 Near Threatened   [sparse distribution; limestone sp]
Central Flinders (FLB06) 
 Near Threatened   [sparse distribution; limestone sp]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
St Vincent (EYB02) 
 Least Concern
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Near Threatened   [likes mallee, loamy soil & limestone]
Murray Mallee (MDD02) 
 Least Concern
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [likes loamy mallee; edge of range; weeds a threat]
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Wimmera (MDD05) 
 Rare   (IUCN: RA d(i,ii))   [odd record; edge of range]
Braemer (MDD07) 
 Rare   (IUCN: RA d(i,ii))
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(ii))   [northern limit]
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))   [northern limit]
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))   [northern limit]
Yellabinna (GVD06)Great Victoria Desert
 Least Concern
Nullarbor Plain (NUL02)Nullarbor
 Least Concern
Yalata (NUL03) 
 Least Concern
Hampton (HAM01)Hampton
 Least Concern
Bimbowrie (BHC05)Broken Hill Complex
 Rare   (IUCN: RA d(i,ii))
IBRA regions
DISPLAY ALL
2 of 4 subregionsNaracoorte Coastal PlainNear Threatened
, Rare
Fleurieu (KAN02)KanmantooRare
  (IUCN: RA d(ii))   [eastern fringe; conserved]
6 of 6 subregionsFlinders Lofty BlockLeast Concern
, Near Threatened
, Rare
5 of 5 subregionsEyre Yorke BlockLeast Concern
6 of 6 subregionsMurray Darling DepressionLeast Concern
, Near Threatened
, Rare
4 of 8 subregionsGawlerLeast Concern
, Rare
Yellabinna (GVD06)Great Victoria DesertLeast Concern
2 of 3 subregionsNullarborLeast Concern
Hampton (HAM01)HamptonLeast Concern
Bimbowrie (BHC05)Broken Hill ComplexRare
  (IUCN: RA d(i,ii))
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Austrostipa]
Name derivation:
Austrostipa from the Latin 'auster' meaning south and the genus Stipa, referring to the genus being allied to Stipa but restricted to Australia. Acrociliata from the Greek 'akros' meaning at the tip and the Latin 'cilium' meaning hair, referring to the glume tips having fine  hairs. 
Distribution:
Found in the southern part of South Australia growing in a wide range of habitats including limestone, sand dunes, mallee woodland, creek banks and disturbed sites. Also found in Western Australia, New South Wales and Victoria.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Shortly rhizomatous perennial grass to 1 m high, with culm branching from near the base and with glabrous nodes. Leaves glabrous or scabrid with blade flat or slightly inrolled to 40 cm long and 10 mm wide, with a long ligule to 6mm. Inflorescence a large spreading panicle to 50 cm long with purple glumes. Flowering between September and February.

Key to this species: perennial grass, culm branching from the base; panicle large and spreading; awn with straight triangular bristle and width at base equal to the column; column pubescent; callus long sharp, 

Fruit type:
Dark brown lemma to 6 mm long, covered in granular tubercules and short white to tawny hairs; callus long and sharp to 1.5 mm long, awn to 90 mm long; once or twice bent with bristle triangular, straight and equal in width at the base to the pubescent column;, palea sub-equal to lemma with a dense line of hairs down the centre. 
Seed type:
Yellow-brown grain to 3 mm long within the lemma.
Embryo type:
Lateral.
Seed collecting:
Use your hands to gently strip the seeds (lemma) off the mature fruiting spike, those that are turning straw colour. Mature seeds will come off easily compare to the immature seeds that remain on the spike. Alternatively, you can break off the whole fruit spike to allow some of the seeds to mature further.
Seed cleaning:
Place the seeds/spike in a tray and leave to dry for two weeks. No further cleaning is required if only seed collected. If seed spikes collected, use hand to strip off the mature seeds. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.
Seed viability:
Viability of grass seeds could be very viable, depending on time of seed collections and seasonal conditions.