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No.2 (1993) P. Olde & N. Mariott, ard G. dolichopoda(McGillivray) P. Olde & N. Marriott. One species, G.flexuosa (Lindley) Meissn., referred to synonymyby McGillivray(1993), is reinstatedat specific rank. The paperis divided into 6 parts. Part 1: speciesI-5 (G. curviloba.G. rara, G. corrugata, G. adpressa,G. unifurmis),species referable to Section11 Manglesia sensuBentham. This group is distinguishedin havingpedicels elongate, filiform; perianthactinomorphic; pistils yery short (2.5-6.5mmlong), glabrous and with stylessfongly constrictedabovetheovary below aconspicuous dilationbeyond which the style tapers to a conicalstyle-end; fruits oblong-ellipsoid. Pa 2: species 6-8 (G. synapheae,G. flexuosa,G. prominens), speciesreferable to Section9 Conogynesensu Bentham.This groupis distinguishedby its conflorescenceswith developmentbasipetal, perianth stronglycurled in youngbud; pistils glabrous,<10 mm long with stylesretrorse to sigmoidafter anthesisand with an erect, conicalpollen-presenter;nectary absent. Part 3: species 9-12 (G, thyrsoides, G. dryandroides, G. crowleyi, G. coccinea), speciesreferable to Section I Eugrevillea Series 2 Hebegynesensu Bentham. This groupis distinguishedby its conflorescencesusually secund; pedanthzygomorphic and glabrous on the innersurface; ovary densely hairy andeither sessile or shortlystipitate; fruits with anindumentum of reddishor purple-colouredstripes or blotches.Part 4: species13-15 (G. pilosa, G. dissecta,G. insignis). This assemblagewas partially placedby McGillivray (1993:454) in his Group 12. Thesespecies have conflorescences with development basipetal;torusvery oblique;ovarian stipe adnate at its baseto the inside ofthe torus, usually refracted atright anglesat theupper margin of thetorus;pedanth zygomorphic, the tepals strongly ridged, the limb with segmentsimpressed along their margins; ovary densely hairy; ftuits oblong-ellipsoidwith bonypericarp. Part 5: species16-17 (G. haplantha,G. dolichopoda).These species are referable to Section1 EugrevilleaSeries3 Plagiopoda sensuBer.tham, a group distinguished by its leavessimple andentire, conflorescences axillary or caulineand generally few-flowered; torus oblique; perianth zygomorphic,dilated at the base, hairy on both surfaces;ovary densely hairy, shortly stipitate;pollen- presentervery oblique to lateral.Part 6: species18-20 (G. althoferi, G. pythara, G. superba);agrotp of threeunrelated species whose affinities are discussed within thetext. Newtaxa are described at specific and subspecific ranks some of whichhave not beenpreviously recognised.Perhaps the most contuoversial aspect of thepaper will bethe decision to rankat specific rankthree taxa recently descdbed at subspecific rank (McGillivray 1986), to restore one species from synonymyandtorecognisetaxa atboth specific and subspecific rank that have been treated informally in therecently published revision of thegenus (McGillivray 1993). As thispaper will be followed by a book on the genusby the two authorsin which other sirnilar changesmay be madeand further newtaxa will beeither restored or newlydescribed, it is properand reasonable that a bdefoutlineof ourspecies concept be given in orderthat the reasons fof ouractions can be understood and ourposition in relationto the McGillivray revisioncan be evaluated. We should make it clear from the outset that our treatmentsare not intended to diminish McGillivray's revision,which standsas a taxonomicdocument of significantintemal integrity, erudition andresearch and will remain the standardreference for many yearsagainst which we and otherscan make valid taxonomiccomparisons. Rather, we put forward a different perspectivein the admittedly more subjective area of interpretation and ranking which reflects our adoption of a somewhatnarrower, biologically orientated species concept as the basicunit of practicalhuman recognition.To someextent, this approachis moreconcordant with historicallyaccepted species conceptswithin the genus. 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