Botanical art
Common names
Yundi Guinea-flower
Etymology
Hibbertia named after George Hibbert (1757-1837), a London merchant who maintained a private botanic garden at Chelsea. Tenuis from the Latin 'tenuis' meaning thin, slender; referring to its more delicate and slender habit in comparison to Hibbertia australis.
Distribution and status
Endemic to South Australia and found in the vicinity of Mt Compass, growing in low or open vegetation in permanent wet places. Native. Very rare in South Australia.
Herbarium region: Southern Lofty
AVH map: SA distribution map (external link)
Plant description
Shrublets with procumbent to scrambling, hairy branches to 50 cm longcovered in hairs. Leaves without axillary tuft of hairs, petiole to 0.5 mm long. Leaves linear, to 12.2 mm long and 1.5 mm wide, obtuse to rounded with abruptly constricted apex of central ridge recurved and scarcely protruding, abruptly constricted into petiole, above convex and puberulous with hairs with 1-3, usually forward-directed branches, below with central ridge much broader than revolute margins and puberulous with muchbranched hairs. Flowers mid to bright yellow, on filiform peduncle to 18 mm long and recurved after flowering, terminal on long and short shoots but usually leaf-opposed due to sympodial growth, with linear or linear-lanceolate bracts. Flowers throughout the year like most species of Hibbertia growing in permanent moist places. Fruits are brown capsule with 2 carpels , puberulous, recurved with erect styles attached to the dorsal apex. Seeds are red to brown ovoid seed to 2.3 mm long and 1.5 mm wide.
Seed collection and propagation
Collect seeds between January and December. Collect mature capsules, those that are turning a pale straw colour and contain brown seeds. Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules gently 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. This genus tend to have low seed viability. From one collection, the seed viability was high, at 85%. This species has morphophysiological dormancy and can be difficult to germinate.
Location | No. of seeds (weight grams) | Number of plants | Date collected | Collection number Collection location | Date stored | % Viability | Storage temperature |
---|---|---|---|---|---|---|---|
BGA | 220 | 6 | 3-Jan-2008 | DJD1041 Southern Lofty | 1-Jan-2012 | -18°C | |
BGA | 670 (1.47 g) | 21 | 13-Mar-2014 | DJD3092 Southern Lofty | 1-Jan-2016 | 85% | -18°C |
BGA | 114 (0.154 g) | 12 | 17-Feb-2021 | TST1469 Southern Lofty | 28-Jun-2021 | 62% | -18°C |
BGA MSB | 1,500 (2.260 g) 1,100 (1.760 g) | 100 | 23-Dec-2020 | TST1461 Southern Lofty | 28-Jun-2021 | 70% | -18°C |
BGA | 3,000 (4.410 g) | 40+ | 12-Jan-2022 | Yundi Swamps Southern Lofty | 7-Jul-2022 | 90% | -18°C |