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V N S'roddoH llBIlsqY ert!4snv urarsa/A'qre.{ quoN 0z xog oa srrrortroq?l q.&esed euuPlll u€Ierrsnv ur3rso71 0209 '{alqlus/ 'Oa '3€g 'OdlSJ 'stllstl€ls -) erl?itsnv ur:lsay'd eip^ud pu€ suleueqiel{ Jo uolsl^rCI 09 'oorauue/A 'lq s 9909 €rt?r1snv urstsriA xog oa erlue] q.l€as3u oJIIpIL/Au€{erlsnY urelsa \ puE S .unde3 51 slloqdruEJ V Nv'roddoH C (auoreg,{tr41)Dlsanc srydtprn7 spnqpue sa^ual Jo 'uollBlrol 's1;n4ur uollnlo^apuu uollsultulnslp sepadsqns luJlqduJ8oa3l O86I\ n6t-6LI (Z)SErsMnN Nuttsia Vol.s,No. 2 (19E4) 0nr ili uv/ dta f€1. da4".,".,..",". " N,4 r1[\ \t\/ b\\ dAA ),hn /t/ ( EIl FiqureL Ceoaraphrcaldisrributionr ot .ubsp.r aprlr (o) and subsp.r agnd(.) in roulh-we\ternAustraiia Tracingr from a leaj a;d lruir from three plants lrom a sampleof populalion! are given. Nole lhe valrabilily ot planls from Yanneymooning Hill Gee text). Drawings (by S. J. Patrick) illustrate typical fruits, buds, flowers and leaves of the two subspecies. among eucalypts in the insularity and geographical separation of their populations, and therefore might be expectedto show unusual patterns of evolution. This morphometric study complements other work on Eucalyptus caesia, including a survey of allozyme variation (Moran and Hopper 1983), cladistic and phenetic analyses of phylogeny (Hopper and Burgman 1983), an investigation of nectar flow and pollinators (Hopper 1981, Wyatt and Hopper unpubl.), the formal description of the two races as subspicies (Brooker and Hopper 1982), notes on the species'distribution and use of the trami "Gutrgu.tr," (Rye and Hopper 1982), and an ass€ssmentof E. clesia's conseryation status (Hopper et al. 1982). Materials and methods Field sampting and measurements taken. K\ovtrr locations of Eucalyptus coesia were establishedthrough a literature search(e.g. Blakely 1965,Chippendale 1973,Gardner 1979), from specimenlabels at the Western Australian Herbarium, and from information supplied by professionaland amateur botanists in WesternAustralia. Each location was then suneyed in 1978 or 1979. Suitable granite rocks n€ar to the known locations were also surveyed exhaustivelyfor new populations of the species. The specieswas found at 15 major locations (Hopper et al. 1982)and material was sampled from ll of these, Two populations separated by a few hundred metres were sampled at two locations (Chutawalakin Hill and Chiddarcooping Hill), while only a single sample FFFFep".' es-|ts)- l - cllii z?35?1E ;s3 =E ecEggaF $sFFgEufl,'liEi *; FH;*;85 gg, -*€€=iEi- F+{ Ea=s- 3fifiEtfi ER E' qL b ii \ilininiiio x ! Lr b. -{ L. io o i,; N9, qd" b\; i!b.iLn{b- p ! !e i- N l, N t-- !..) :il:iiIlEE a5i .iP 5 :49 :::|:alEl 6: -tsu L *:i::lilii .V.N .lrddoH .C.S o8ao) sntd!(pxng \tndeJ N pu€ fieqdu?C NuytsiaVol.5, No. 2 (1984) Frsure 2. Fruit. leaf and bud measufement' taken in the sludy. Fruit: Fr, mid_fruil diameter: F?,fruit top diameter; F., fruir lensth; F,, pedrccl length; F5, pedicel thickness. Leai Lr, leaf length; Lr, leaf width; Lr, petiolc length; Bid. 8,. operculumlengrhl 8,. h) panthiumlength; Br, bud diameter.Drawing by S. J. Patrick. was taken elsewhere,giving a total of 13 populations sampled (Table l). A sprig with leaves and fruits was selectedfrom each of up to 15 plants on line transectsin each population Seven of the populations were visited sufficiently early (May-July) in the flowering season to include mature buds as well as leavesand fruits on the sample sprigs. The longest leaf, fruit and bud on each sprig were selectedfor measurementof the eleven charactersillustrated in Figure 2. Only a singleorgan per plant was measuredsince preliminary studies indicated that variation within plants was minimal compared with that between plants and betweenpopulations. '(spnprlrpur ^reJqtr,t esoql tdecxs) suorlelndod lP loJ sJepaJBqclln{ pue Jeel roJ sasdleu€ '1In4 eqt qrelep roqlouv (l elqeJ) 3lq?lIE^E er? sJep?rEqc pnq pu? 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