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APPENDIX 1 
TAXONOMIC ISSUES 
1. Erythraea centaurium 
E. centaurium as used by Storr and O'Connor was a misapplied name for Centaurium erythraea (Paczkowska & 
Chapman, 2000) 
C. erythraea has long been confused with C. tenuiflorum and C. pulchellum, both recorded for Rottnest Island. 
Centaurium is a very difficult genus and differences between closely related species are often very slight, making 
identification difficult. 
2. Lepidospenna spp 
The taxonomy of the genus Lepidosperma is particularly complex and the boundaries between related taxa are not 
always clear. Such is the case between L. squamatum and L. pubisquameum. Only L. gladiatum and L. pubisquameum 
are included in the definitive list (Appendix 2). 
3 Didiscus pusillus was listed by Storr (1962). Marchant & Abbott (1981) mention that Trachymene pilosa was previously 
known as Didiscus pilosus. In the absence of WA Herbarium vouchers, perhaps this could have been a pale 
Trachymene coerulea. Plants with white flowers certainly occur, and can be stunted in marginal sites. However T. 
pilosa certainly occurs on Garden Island, and could well have occurred on Rottnest Island. It is presumed extinct. 
4. Names applied to samphires on Rottnest Island since 1962 
Storr(1962) 
O'Connor (1977) 
Frewer (1985) 
Rottnest Regional 
Herbarium 
Arthrocnemum halocnemoides 1 2 
Arthrocnemum arbuscula i;i 
A. halocnemoides —► 
Halosarcia halocnemoides 
H. halocnemoides 
A. arbuscula 
W 
Halosarcia indica 
Salicomia australis 
* 
Salicomia quinqueflora ^ 
Salicomia quinqueflora 
Sarcocomia blackiana 
► 
Sarcocomia quinqueflora 
Sarcocomia blackiana 
1 Storr's descriptions possibly transposed. 
2 This is a synonym of Sclerostegia arbuscula which is only known from the south coast. Probably an incorrect identification of 
Halosarcia indica. 
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