Seeds of South Australia
Pauridia glabella var. glabella (Hypoxidaceae)
Tiny Yellow-star
List of species for Pauridia
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Seed collecting:
September to November
Herbarium regions:
Lake Eyre, Nullarbor, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern   [undercollected annual; tolerates stock people & traffic]
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(i,ii))
Lucindale (NCP03) 
 Least Concern   [undercollected annual; tolerates stock people & traffic]
Tintinara (NCP04) 
 Least Concern   [undercollected annual; tolerates stock people & traffic]
Kangaroo Island (KAN01)Kanmantoo
 Least Concern
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Least Concern
Olary Spur (FLB03) 
 Least Concern
Southern Flinders (FLB04) 
 Least Concern
Northern Flinders (FLB05) 
 Least Concern   [northern edge of range; climate sensitive ]
Central Flinders (FLB06) 
 Least Concern
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
Murray Mallee (MDD02)Murray Darling Depression
 Least Concern
Murray Lakes and Coorong (MDD03) 
 Least Concern   [undercollected annual; tolerates stock people & traffic]
Lowan Mallee (MDD04) 
 Least Concern
Wimmera (MDD05) 
 Near Threatened   [undercollected annual; tolerates stock people & traffic]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Nullarbor Plain (NUL02)Nullarbor
 Rare   (IUCN: RA d(ii))
Yalata (NUL03) 
 Least Concern
Hampton (HAM01)Hampton
 Rare   (IUCN: RA d(ii))   [no records]
IBRA regions
DISPLAY ALL
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
2 of 2 subregionsKanmantooLeast Concern
6 of 6 subregionsFlinders Lofty BlockLeast Concern
5 of 5 subregionsEyre Yorke BlockLeast Concern
4 of 6 subregionsMurray Darling DepressionLeast Concern
, Near Threatened
2 of 8 subregionsGawlerLeast Concern
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(ii))
2 of 3 subregionsNullarborLeast Concern
, Rare
Hampton (HAM01)HamptonRare
  (IUCN: RA d(ii))   [no records]
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 Pauridia]
Name derivation:
Pauridia from the Greek 'pauros' or 'pauron' meaning small; referring to the small habit of some species in the genus (formally Hypoxis from the Greek 'hypo' meaning beneath and 'oxys 'meaning sharp and applied by Linnaeus in the sense of "acute beneath"; referring to the fruit capsule which is contracted at the base). Glabella from the Latin 'glaber' meaning smooth or hairless.
Distribution:
Found across the southern part of South Australia, growing in grassland, grassy woodland and in ephemeral herbfields. Also found in Western Australia, New South Wales, Victoria and Tasmania.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Glabrous herbs to 25 cm high growing from an underground corm (to 1 cm) each year. Leaves linear, to  25 cm long and 1 mm wide, with a channel on the inside. Inflorescence 1–4 stalks  to 20 cm long, with 1 or 2 yellow flowers per inflorescence, to 7 mm wide. Flowering between July and September.
Fruit type:
Brown ellipsoid capsule to 7 mm long, containing numerous tiny black seeds.
Seed type:
Very tiny round black seed to 0.6 mm long and covered in small dimples.
Embryo type:
Linear underdeveloped.
Seed collecting:
Collect mature capsules, those drying off and turning brown with black seeds inside. Slightly greener capsules can be collected if the seeds inside are fat, hard and black.
Seed cleaning:
Place the capsules in a tray and leave to dry for 1-2 weeks depending on the the stage of the capsules. Then rub the capsules with your fingers to dislodge the seeds. Use a sieve to separate the unwanted material. 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:
From two collections, the seed viability were high, ranging from 85% to 95%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA4700 (0.55 g)100+9-Sep-2009DJD1550
Flinders Ranges
Jun-201085%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jun-0878%22 d27 d after ripening 6 weeks in spring/autumn incubator;
filter paper over moist sand;
Incubated under winter conditions
Apr-102%35 dNA
1% agar with 100 mg/L potassium nitrate;
Incubated under winter conditions
Apr-100%NANA
1% agar with 100 mg/L potassium nitrate;
Incubated under spring/autumn conditions
Apr-100%NANA
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under spring/autumn conditions
Apr-100%NANA
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under winter conditions
Apr-100%NANA
1% agar;
Incubated under spring/autumn conditions
Apr-100%NANA
1% agar;
Incubated under winter conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)