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Cunninghamia : a Journal of Plant Ecology for Eastern Australia

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Cunninghamia : a Journal of Plant Ecology for Eastern Australia Cunninghamia 8(2): 2003 Hosking et al., Plant species recognised as naturalised for NSW 2000–2001 175 Plant species first recognised as naturalised for New South Wales over the period 2000–2001 John R. Hosking1, Barry J. Conn2 and Brendan J. Lepschi3 1NSW Agriculture and CRC for Australian Weed Management, RMB 944, Tamworth, NSW 2340, AUSTRALIA, [email protected]; 2National Herbarium of New South Wales, Royal Botanic Gardens, Sydney, NSW 2000, AUSTRALIA, [email protected]; 3Australian National Herbarium, Centre for Plant Biodiversity Research, GPO Box 1600, Canberra, ACT 2601, AUSTRALIA, Brendan. [email protected] Abstract: Information is provided on the taxonomy and distribution of 40 species of naturalised or naturalising plants newly recorded for New South Wales during the period 1 January 2000 to 31 December 2001. These species are: Abrus precatorius subsp. precatorius, Acacia pulchella var. pulchella, Agave vivipara, Alnus glutinosa, Berberis thunbergii, Bryophyllum daigremontianum × Bryophyllum delagoense, Callisia fragrans, Celtis sinensis, Chamaesyce ophthalmica, Cotoneaster ?horizontalis, Cupressus arizonica, Cylindropuntia arbuscula, Cylindropuntia leptocaulis, Cylindropuntia spinosior, Cylindropuntia tunicata, Cyperus teneristolon, Deutzia crenata, Erica arborea, Erica glandulosa, Geranium robertianum, Hieracium murorum species group, Hippeastrum puniceum hybrid, Hyacinthoides non-scripta, Hypericum kouytchense, Hypericum patulum, Jacaranda mimosifolia, Jasminum polyanthum, Juglans regia, Justicia betonica, Koelreuteria formosana, Myagrum perfoliatum, Oenothera biennis, Pinus durangensis (naturalising), Pinus nigra var. corsicana, Schinus terebinthifolius, Scorpiurus muricatus, Tillandsia usneoides, Triadica sebifera, Viola riviniana and Vitis vinifera s. lat. Cunninghamia (2003) 8(2): 175–187 Introduction the National Herbarium of NSW in 2000 or 2001, or specimens were not forwarded until after 2000. Following The naturalised flora of Australia has received scant attention. recent collections a few old records of species stored at the In particular, there has been a general lack of concern about end of genera and families in the National Herbarium of NSW new naturalisations. Attention has traditionally focused on collection were able to be determined to species. There are ‘known’ weedy species, and then frequently on weeds of likely to be other records of recently naturalised species for agriculture. Species in the early stages of naturalisation, NSW collected during 2000 and 2001 (or first noted at NSW especially those from horticulture (including ornamentals), herbarium during this period) housed at other Australian agriculture and pastures have typically fared worst, being herbaria. For example a number of species from north- deemed not worthy of scientific attention. This is reflected in eastern NSW are likely to have been sent to the Queensland the dearth of herbarium collections of a number of Herbarium, Toowong (BRI) and some from southern NSW naturalised species, some of which have the potential to to the National Herbarium of Victoria, South Yarra (MEL). become serious weeds. This paper draws attention to a number We are not aware of these at present but ‘Australia’s Virtual of new naturalisations for the state of New South Wales over Herbarium’ project (http://plantnet.rgbsyd.nsw.gov.au/ the period 2000–2001. Only species considered to be avh.html) should serve to highlight these in the future. spreading from initial plantings or other naturalisations (e.g. from discarded garden refuse) are covered. ‘Naturalised’ in Names used for families and taxa are those currently used by this paper refers to non-native species which are reproducing the National Herbarium of NSW and can be viewed in (sexually or vegetatively) in the wild for at least one PlantNET (Royal Botanic Gardens Sydney 18 March 2003). generation. Herbarium codes follow Holmgren et al. (1990). Information on the means of dispersal of the various taxa Methods treated in this paper is given under ‘Notes’ for each taxon Species are only listed here if there is at least one voucher where this is known. Where the dispersal mechanism is not specimen lodged at either the National Herbarium of New listed, then the plants are here presumed to be spread by seed. South Wales, Sydney (NSW) or the Australian However, the actual means of dispersal in NSW is not known National Herbarium, Canberra (CANB). A number of for a number of the taxa. species listed were first collected prior to 2000 but are The format of this paper is based on that of Heenan et al. included as these records were overlooked for Flora of New (1998, 1999, 2002) publications on recent plant naturalisations South Wales accounts and were first noted in recent times at in New Zealand. 176 Cunninghamia 8(2): 2003 Hosking et al., Plant species recognised as naturalised for NSW 2000–2001 Discussion references to published descriptions (including botanical illustrations and photographs), distribution within NSW The definition of the term ‘naturalised’ as used in this paper according to botanical regions, habitat preferences is outlined above. However, given that there is a degree of (including areas where the species is likely to naturalise based disagreement as to how this term should be applied on native range and areas where it has naturalised, if such (Richardson et al. 2000), we have provided additional information can be determined), the first known herbarium information on numbers of plants present, area covered and record, and additional herbarium records for the State, the reproductive status of all taxa treated in this paper to allow region of origin and miscellaneous notes (including relative for these differences in interpretation. abundance, invasiveness and whether naturalised in other There are many ways of detecting new plant naturalisations states). Authorities for native species are those currently (Hosking et al. 2001). The records of plant naturalisations in recognised at the National Herbarium of NSW. the National Herbarium of New South Wales listed below are the result of (i) collections made by experts who have a Conifers and allies reasonable knowledge of local floras, including local CUPRESSACEAE government weeds officers, environmental consultants, bush regenerators, professional botanists and staff from Landcare Cupressus arizonica Greene and Greening Australia and (ii) specimens retained by Arizona Cypress herbaria who provide plant identifications for the general DESCRIPTION: Tree to 20 m high. See Eckenwalder in Morin (1993). public, government agencies and other professionals. REGION OF ORIGIN: Native to Arizona, California, New Mexico and Texas The species listed below include many succulents, in the USA and Chihuahua and Sonora in Mexico. particularly cacti. These are often not collected because of NSW DISTRIBUTION / HABITATS: Southern Tablelands and Central perceived difficulty in preparing good specimens. It is worth- Tablelands. The species is known to be naturalised in a few localities near existing plantings in NSW Tableland areas. At Majors Creek plants while summarising methods for preparing herbarium are growing in an area that was Eucalyptus radiata forest but is now material of these plants. Succulents can be dealt with in a cleared and dominated by mowed Themeda australis. Here it is number of ways. Many can be frozen to destroy cell structure growing on soil derived from granite. At Blackheath this species is and then dried rapidly in warm air. Bulky succulents, such as growing in disturbed native Eucalyptus sieberi and Eucalyptus oreades cacti with large cladodes, can be cut parallel to the large faces shrubby woodland on sandy soil derived from sandstone. of cladodes, frozen, and then dried rapidly in warm air. FIRST RECORD: Majors Creek Township. Majors Creek Recreation Another method of drying succulents, using a commercial Reserve, G.W. Carr 9903-55 & P.J. Tucker, 17 Mar 1999 (CANB, MEL, NSW). hair-drier and a bag of tightly woven fire-resistant tissue, is ADDITIONAL RECORD: Native bush over road from 237 Hat Hill Road, described in Eggli and Leuenberger (1996). In this case Blackheath, J.R. Hosking 2240 & C.H. Barker, 25 Nov 2002 (CANB, high temperatures (65–70°C) maintained for 2–3 hours kill MEL, NE, NSW). all plant tissue. The rest of the drying process takes 6–12 NOTES: The taxonomy adopted here follows Eckenwalder in Morin hours at a lower ventilation and temperature setting. (1993) and species previously included as varieties of Cupressus arizonica (var. glabra (Sudworth) Little, var. nevadensis (Abrams) A number of species listed here, for example Juglans regia Little and var. stephonsii (C.B. Wolf) Little)) or as the species Cupressus (walnut), Schinus terebinthifolius (broad-leaf pepper tree) and glabra Sudworth, Cupressus nevadensis Abrams and Cupressus Tillandsia usneoides (Spanish moss) to name a few, are likely stephonsii C.B. Wolf are all considered to be Cupressus arizonica. to have been recognised in the field for many years but have Notes with the Majors Creek specimen indicate that naturalised plants not been collected as many people are able to identify them. arise from about 45 trees planted 60+ years ago. At the time of collection there were thousands of plants present from tiny seedlings However, there is a need to collect specimens as a permanent to small trees about 5 m high. At the Blackheath site there were three record of when, where and how species begin to naturalise. naturalised plants
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