Seeds of South Australia
Rostellularia adscendens var. pogonanthera (Acanthaceae)
Hairy Pink Tongues
List of species for Rostellularia
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Seed collecting:
October to December
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Least Concern
Central Flinders (FLB06) 
 Near Threatened
Arcoona Plateau (GAW04)Gawler
 Least Concern
Roxby (GAW07) 
 Rare   (IUCN: RA d(i,ii))   [limited habitat]
Kintore (GVD04)Great Victoria Desert
 Least Concern
Tallaringa (GVD05) 
 Rare   (IUCN: RA d(i,ii))   [limited habitat]
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Rare   (IUCN: RA d(i,ii))   [limited habitat]
Breakaways (STP01)Stony Plains
 Least Concern
Oodnadatta (STP02) 
 Least Concern
Murnpeowie (STP03) 
 Least Concern
Peake-Dennison Inlier (STP04) 
 Least Concern
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Least Concern
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Coongie (CHC06) 
 Rare   (IUCN: RA d(i,ii))
Lake Pure (CHC07) 
 Rare   (IUCN: RA d(i,ii))
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Everard Block (CER03) 
 Least Concern
IBRA regions
2 of 6 subregionsFlinders Lofty BlockLeast Concern
, Near Threatened
2 of 8 subregionsGawlerLeast Concern
, Rare
2 of 4 subregionsGreat Victoria DesertLeast Concern
, Rare
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsRare
  (IUCN: RA d(i,ii))   [limited habitat]
6 of 7 subregionsStony PlainsLeast Concern
3 of 4 subregionsChannel CountryLeast Concern
, Rare
2 of 3 subregionsCentral RangesLeast Concern
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 Rostellularia]
Name derivation:
Rostellularia from the Latin 'rostellum' meaning small beak and 'ul' diminutive suffix; referring to the small basal appendage on the lower anther cell. Adscendens from Latin meaning to rise obliquely rather than erect; referring to the species habit. Pogonanthera from the Greek 'pogon' meaning beard and 'anther' meaning an awn; referring to the hair-like awns.
Found in the northern part of South Australia, growing in or near watercourses. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Native. Common in South Australia. Uncommon in Western Australia. Common in the other states.
Plant description:
Decumbent, usually dense, spreading, grey-green or green, densely pubescent or more or less glabrous, perennial herbs or shrubs up to 30 cm high, with small vegetative shoots on basal parts of woody branches. Branches many, with fine, white, down-curved hairs all over or confined to nodes and young parts, nodes always conspicuously white with hairs. Leaves on short petioles to 1 mm long, often obscured by dense white hairs, base broad cuneate, entire, apex acute or obtuse, blade ovate to 17 mm long and 8.6 mm wide, white down-curved hairs usually dense, sometimes sparse or absent on upper darker surface. Lowest section of inflorescence often indistinguishable from leaves, covered with same white hairs as the rest of the plant, usually mixed with obscure more or less sessile glands. Corolla with 2-lipped, the upper lip with one lobe and the lower lip with three small lobes at the apex, pink to purple. Flowering between July and October.
Fruit type:
Brown capsule to 7.5 mm long.
Seed type:
Black reniform seed to 1.7 mm long and 1.3 mm wide, covered in tubercules.
Embryo type:
Seed collecting:
Collect capsules that are maturing, drying off and turning brown. Green capsules can be collected if the seeds are hard and brown.
Seed cleaning:
Place the capsules in a paper bag or tray and allow to dry for 1 to 2 weeks. Gently rub the dried capsule by hand 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.