Calectasia Calectasia is a genus of flowering plants in the family Dasypogonaceae . They are commonly referred to as tinsel lilies , and are endemic to southern Australia .Description Plants in the genus Calectasia are small, branched shrubs to about 50 cm high with stiff, erect branchlets covered by old leaves and leaf sheaths. The branchlets are covered with short, soft hairs and the lance-shaped leaves have pointed ends and parallel veins. Flowers occur singly on the ends of short branchlets above a large number of small, overlapping leaves. They have six lilac-blue to purple petals which form a short tube at their lower end but mostly spreading, forming a star-like pattern with a metallic sheen. Six bright yellow or orange stamens form a tube in the centre of the flower with a thin style extending beyond the centre of the tube . Some species of Calectasia form specialised roots called stilt roots and can only regenerate from seed whilst others have tubers and can resprout from these. All stilt-rooted species are thought to be killed by fire and need up to five years without fire to flower and set seed.Taxonomy and naming The first species to be named was Calectasia cyanea by Robert Brown in Prodromus Florae Novae Hollandiae et Insulae Van Diemen . The name is derived from the Ancient Greek words kalos " beautiful" and ektasis "development", alluding to the blue spreading perianth-tubes. Earlier authors such as George Bentham recognised only one species but later botanists added C. grandiflora and C. intermedia . In 2001 , Barrett and Dixon reviewed the genus and added eight new species and in 2015 four more species were added making a total of 15.Distribution and habitat Calectasia species occur in the south-west of Western Australia and in the border areas between South Australia and Victoria . C. intermedia is only found in the latter region and the remaining species only in Western Australia. They occupy a variety of habitats, occasionally in seasonally swampy areas, but more usually in low heath or woodland on sand, or over laterite or granite.Ecology There is evidence that all Calectasia species have sand-binding roots and flowers that are buzz pollinated . It is possible that the similarity in appearance of Calectasia and Thelymitra variegata flowers indicate an example of Dodsonian mimicry . Calectasia grandiflora and Thelymitra variegata often occur in the same area. Individual Calectasia plants are often parasitised by a dodder-like plant in the genus Cassytha .Species Calectasia browneana Keighery , K.W.Dixon & R.L.Barrett Calectasia cyanea R.Br. - Star of Bethlehem Calectasia demarzii R.L.Barrett - Demarz's tinsel lily Calectasia elegans R.L.Barrett - elegant tinsel lily Calectasia gracilis Keighery Calectasia grandiflora L.Preiss - blue tinsel lily Calectasia hispida R.L.Barrett & K.W.Dixon Calectasia intermedia Sond. - blue tinsel lily Calectasia jubilaea R.L.Barrett - jubilee tinsel lily Calectasia keigheryi R.L.Barrett & K.W.Dixon Calectasia narragara R.L.Barrett & K.W.Dixon Calectasia obtusa R.L.Barrett & K.W.Dixon Calectasia palustris R.L.Barrett & K.W.Dixon Calectasia pignattiana K.W.Dixon & R.L.Barrett Calectasia valida R.L.Barrett - robust tinsel lily
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