Seeds of South Australia
Eucalyptus capitanea (Myrtaceae)
Desert Ridge-fruited Mallee
List of species for Eucalyptus
Click on an image to enlarge it
Seed collecting:
January to December
Herbarium regions:
Nullarbor, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula
IBRA regions
Eyre Mallee (EYB05)Eyre Yorke Block
 Rare   (IUCN: RA d(i,ii))
Gawler Volcanics (GAW02)Gawler
 Data Deficient   [now E capitanea if in SA]
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(i,ii))
Yalata (NUL03)Nullarbor
 Rare   (IUCN: RA d(i,ii))
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 Eucalyptus]
Name derivation:
Eucalyptus from the Greek 'eu' meaning well and 'calyptos' meaning covered; alluding to the cap or lid which covers the stamens in the bud. Capitanea from the Latin 'capitaneus' meaning head, chief; referring to the larger size of the leaves, buds and fruits compared to E. incrassata.
Distribution:
Endemic to South Australia and restricted to an area north of Ceduna, growing on deep red sand on the crests and sides of sand dunes in mallee.
Status:
Native. Rare in South Australia.
Plant description:
Multi-stemmed mallee to 7 m tall will rough, loose, ribbony to flaky, pale yellow-brown to grey lower stems and smooth, reddish to grey to cream upper stems. Juvenile leaves ovate to lanceolate, dull, blue-green becoming glossy green. Adult leaves to 130 mm long and 45 mm wide, firm, lanceolate to broad-lanceolate, glossy, green. Flowers axillary in umbel with 7 flowers. Buds to 22 mm long and 1 mm wide, distinctly ribbed, bud-cap conical to beaked about the same length or shorter than the bud-base. Flowers cream.
Fruit type:
Woody urn-shaped fruit to 22 mm long and 15 mm wide, distinctly ribbed, disc descending, valves 3 or 4 enclosed below the rim level.
Seed type:
Dark brown to black pyramid-shaped seed to 4 mm long and 3 mm wide, with dinstinctive wing around the margin.
Embryo type:
Folded.
Seed collecting:
Collect mature fruits that are dark and hard (difficult to break with a finger nail), with the valves un-open any time of year.
Seed cleaning:
Leave the fruits in a breathable container in a dry room for one to two weeks. This allows the valves on the fruit to open and release the seeds. Separate the seeds by placing all the materials into a bucket and shaking it to dislodge the seeds. Pass the material through a sieve to separate the unwanted material. The finer material will contain both seeds (soft) and frass (hard) usually distinguishable from each other but can be very similar in shape and colour. With finer sieves, the seeds can be separated from the frass but this is not essential for storage or propagation. 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 germination:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
7200 (14.4 g)
7500 (15 g)
1729-Oct-2004MOL 4694
Gairdner-Torrens
31-Mar-200695%-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.