Seeds of South Australia
Calytrix involucrata (Myrtaceae)
Cup Fringe-myrtle
List of species for Calytrix
Display more images
Click on an image to enlarge it
Seed collecting:
October to December
Herbarium regions:
Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Northern and Yorke, South Australian Murray-Darling Basin
IBRA regions
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Data Deficient   [no precise records - not sure if in region; specific habitat, remnant sanddunes; could be edge of range]
Broughton (FLB02) 
 Critically Endangered   (IUCN: CR B2ab(iii))   (Probable Decline)   [weeds a threat]
Southern Yorke (EYB01)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   [weeds a threat]
St Vincent (EYB02) 
 Vulnerable   (IUCN: VU B2ab(iii))   (Probable Decline)   [weeds a threat]
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [checked M O'Leary; edge of range]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Yellabinna (GVD06)Great Victoria Desert
 Least Concern   [limit of range]
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 Calytrix]
Name derivation:
Calytrix from the Greek 'kalyx' meaning calyx and 'thrix' meaning hair; referring to the awns on the sepals. Involucrata from the Latin 'involvere' meaning to wrap or having a wrapper; referring to the large bracts that envelop the flower during the bud stage.
Distribution:
Endemic to South Australia and found mainly on Eyre and Yorke Peninsulas with small populations in the northern Mount Lofty Ranges and Murray region, growing in mallee scrub on sand.
Status:
Native. Common in South Australia.
Plant description:
Shrub to 1 m high, glabrous. Leaves linear to elliptic, to 7.5 mm long, in transverse section broadly obtriangular to depressed-angular-obovate. Flowers white (sometimes tinged pink) with a long base. Flowering between August and October. 
Fruit type:
Dark brown long cylindrical fruit to 20 mm long and 1 mm wide, with fan-like wings and awns around the top.
Seed type:
A small ovoid seed sits in the cylindrical section of the fruit.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect heads by hand when they are brown and slightly fat at the base. This should contain small hard seed.
Seed cleaning:
No cleaning is required if only the fruits were collected. If collected with other material, 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:
Seed set and seed viability can be low. From one collection, the seed viability was average, at 50%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
5200 (11.1 g)
5200 (11.1 g)
50-603-Nov-2005DJD181
Eyre Peninsula
7-Aug-200650%-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.