Seeds of South Australia
Correa calycina var. calycina (Rutaceae)
South Australian Green Correa
List of species for Correa
Display more images
Click on an image to enlarge it
Seed collecting:
October to December
Herbarium region:
Southern Lofty
NRM region:
Adelaide and Mount Lofty Ranges
IBRA region
Fleurieu (KAN02)Kanmantoo
 Vulnerable   (IUCN: VU B2ab(i,ii,iii,iv,v); D2)   (Probable Decline)   [highly localised; round Myponga area & Hindmarsh Tiers]
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 Correa]
Name derivation:
Correa named after Jose Francisco Correa de Serra (1751-1823), a Portuguese botanist. Calycina from the Greek 'kalux' meaning case of bud, husk; referring to its persistent (or conspicuous) calyx.
Distribution:
Endemic to South Australia and found only at a few sites on the Fleurieu Peninsula, growing in wet areas, including riparian, cliffs, hillslopes and dry tributaries.
Status:
Native. Very rare in south Australia.
Plant description:
Tall dense shrub to 3 high and 2 m wide with stems covered in dense minute hairs. Leaves narrowly ovate or ovate to elliptic, to 4 cm long and 2.5 cm wide, glabrous to tomentose on top and sparsely to moderately densely stellate-hairy on the underside. Inflorescence solitary on lateral or axillary branchlets with tubular, green often darkening to mauve flowers. This variety differ from the other variety found in South Australia Correa calycina var. halmaturorum which have dense stellate-hairs on the underside of the leaves rather than sparsely to moderately dense stellate-hairs. Flowering between April and September.
Fruit type:
Pale brown capsule to 8 mm long with 1-4 segments enclose by the sepals.
Seed type:
Mottled brown reniform seed to 5.5 mm long and 2.5 mm wide, with a smooth surface. 
Embryo type:
Linear fully developed.
Seed collecting:
Collect mature capsules, those that are turning a pale straw colour and contain hard seeds, either by hands or place small breathable bags over immature capsules to collect seed. Capsules maybe hard to see as it is enclose by the green sepals.
Seed cleaning:
Place the capsules in a tray and leave to dry for a weeks. Then rub the capsules gently by hand to dislodge the seeds. Be very careful as the seed coat is thin and easily damaged. 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 was high, at 100%.
Seed germination:
This species has morphophysiological dormancy and can be difficult to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA545 (4.59 g)8-Dec-2006KHB68
Southern Lofty
20-Jul-2009100%-18°C
BGA794 (4.93 g)10-Dec-2007PJA161
Southern Lofty
Jun-2010100%-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.