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'q:EAv U A '[a,qs/Ja?nr/Usraprq'U .r.fraz!'t .reazz|A.:€erreda snote8rpt4' ?tnorr' srql ar pepnlrur ere erq aarlo[p! aqJ '1cesqn6 puE ses.IerFr?sny '1ce6qn6 '.rlgr{dtuv 'pe6qns :paqrrcsep e.Ie sar{durs uortras urqll,ra €uorl -ca6qns!\ou aofi{1qctq,duI paiodord sI xallrn8 'ua8qnsroJ uollBcrJIBsBIc'papnpur arB6alrads uarp ueoal 'A V -eq 6prrqdq t uo satoN rlpaouwnrp repun,{(u.{uoud6ol palBEalarq slwroJl9onxell:A puE snsournp 'U dlerrB^ B ol parnpar BI sl.urolsoErnp xaumu aeu sB paqlrrsap orB (sndsfiJ x ttu,$orq'E) Iaroow Jo 'srllol8oae$ 'A 'rllrorled -$s.rRrlolx U puB(rrmrorq U x suaprq U) sEuewneurorx E B axg?snour;lpul aql BrlBrtsnvuqlra\ xardnu salcadsuallB 6 pus snoue€rpurI aql ro] pepl^ord ere IeI e puB stroqdlrcse( JO'(t86I) Jo ZZI'gJ :(I)q Ers],{nNuorleraprsuorer e :EIIer}snVuI (aEarEuo8^lod)xa..rn8 H }J'ra8ulqtau lcErlsqv €ulsnv'BuueIA0tII-V'ZZ assES{te8 re8urqrsuH'y ruollEraplsuocar s :3!IBrlsnv uI (aBaceuo5.{1o6)xaung (i86t) ZZI 9l i(I)g erEInN ?6 Nu1'tsiaVol 5, No. 1 (1984) brownii) and R. xjohannis-moorei (R. brownii x R. crr'spus) are described; R dumosiformis has been reduced to a variety of R. dumosus; three alien species, -R. frutescens, R. sagittatus and R. vesjcarius, not previously recorded are included; notes on four hybrids between alien species are included viz. R. xschulzei (R. conglomeratus x R- crispus), R. xmuretii (R. conglomeratus x R. pulchet), R. xpratensis (R. crispus x R. obtusifolius) and R. xpseudopulcher (R. crispus x R. pulcher). Species are arranged within the text according to the infrageneric classification which is outlined below. In most casesonly a selection of specimens seen has been listed. Those herbaria from which material was examined are given in the Acknowl- edgements. The study was conducted at herb. PERTH and it is believed that the spe_cimensexamined there included the majority of those currently housed in Aus- tralla. I here take the opportunity of correcting some misprints in my 1937 publication. p. ?, description of subsect. DensiI'lori, first line: read valvae ecallosae instead of caltosae. p. 8, description of subsect.Hydrolapatha, second line: read latitudine instead of longitudine. p. 8, description of subsect. Obtusifolii, first line: read latitudine instead of longitudine. p.8, description of subsect.Dentati, second line: read latitudine instead ol lonsitudine. p. 8, description of subsect. Maritimi, second line: read latitudine instead of longitudine. p. 18 line nine (key): pedicels short, thick, about as long as the fruit instead of: long' slender, nearly twice as long as the fruit. Geographical distribution and ecology of indigenous species For the iirst time the distributions of indigenous Australian Rumex species have been mapped. I am of the impression that except for some areas of south eastern Australia, these distributions are incomplete. This may reflect a certain lack of interest in the genus by collectors within certain areas. I hasten to add, however, that following three months in Western Australia where field work was conducted be- tween Kalbarri and Albany, I was successfulin locating only two indigenous species of Rumex (R. brownii and R. dumosus). Indigenous species are evidently either rare or geographically very restricted, at least in this part of Australia. This experience raises the question as to whether or not R. drummondt'i has become extinct. Most of the indigenous Australian species are centred in the south-east of the con- tinent. One of the most geographically restricted speciesis R. bidens, a semi'aquatic plant which is found in freshwater swamps (Figure 11A). Its thick, hollow, creeping rhizome is at least temporarily submerged and from this arise short, usually unbranched inflorescences. It is known from New South Wales near the Murray River, Victoria, Tasmania and parts of South Australia. Eumex brownrJ is wide- spread in both coastal and inland areas of south eastern Australia but there are scat- tered, disjunct occurrences in Queensland, Central Australia and south-west Western Australia (Figure 13A). 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