alyxia banks ex r.br. alyxia rubricaulis subsp poyaensis boiteau alyxia rubricaulis (baill.)...

Alyxia Banks ex R.Br.

Alyxia rubricaulis subsp poyaensis Boiteau

Alyxia rubricaulis (Baill.) Guillaumin

genus:

species:

subspecies:

440 5194 8299

3047 5195 8300

3048 5196 8301

3049 5197 8302

3961 5198 8303

5008 5199 8304

5187 5200 8802

5188 5292 8804

5189 5381 8805

5190 5596 8989

5192 5605 9094

5193 5609 10735

390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

Classification of specimens according to Boiteau & Allorge 1979

lectotype

holotype

circumscription of subspecies poyaensis

circumscription of species rubricaulis

390


Alyxia poyaensis (Boiteau) DJMiddleton comb.nov.


genus:

species:

440 5194 8299

3047 5195 8300

3048 5196 8301

3049 5197 8302

3961 5198 8303

5008 5199 8304

5187 5200 8802

5188 5292 8804

5189 5381 8805

5190 5596 8989

5192 5605 9094

5193 5609 10735

390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

Classification of specimens according to Middleton 2002

lectotype

holotypesubspecies:




genus:

species:

440 5194 8299

3047 5195 8300

3048 5196 8301

3049 5197 8302

3961 5198 8303

5008 5199 8304

5187 5200 8802

5188 5292 8804

5189 5381 8805

5190 5596 8989

5192 5605 9094

5193 5609 10735

390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

Classification of specimens according to Middleton 2002

subspecies:

lectotype

holotype

described in Middletons Revision

circumscription of species poyaensis

circumscription of species rubricaulis




genus:

species:

subspecies:

440 5194 8299

3047 5195 8300

3048 5196 8301

3049 5197 8302

3961 5198 8303

5008 5199 8304

5187 5200 8802

5188 5292 8804

5189 5381 8805

5190 5596 8989

5192 5605 9094

5193 5609 10735

390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

Comparison of alternative classification of specimens


390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

synonymy




Name shared (synoymous) but concepts differ as

shown by circumscription




genus:

species:

subspecies:

440 5194 8299

3047 5195 8300

3048 5196 8301

3049 5197 8302

3961 5198 8303

5008 5199 8304

5187 5200 8802

5188 5292 8804

5189 5381 8805

5190 5596 8989

5192 5605 9094

5193 5609 10735

390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

Comparison of alternative classification of specimens


390 5202 5206

3050 5203 8305

5191 5204 8803

5201 5205

concept of Alyxia rubricaulis (Baill.) Boiteau according to DJMiddleton

concept of Alyxia rubricaulis (Baill.) Boiteau according to Boiteau

390

An author can assert that synonymy exists between two concepts in separate classifications, or this can be assigned on the basis of shared circumscriptions (i.e. the similarity in the set of specimens included) (i.e. the case here with poyaensis)

Because of the rules of nomenclature valid names might be shared between taxa that are not considered identical, and have different circumscriptions (the case here with rubricaulis).

The Prometheus I/II integrated database holds data on described specimens and taxonomic hierarchies (and names, which can be calculated by the rules of priority etc.). Therefore it should be possible to base taxon circumscription on descriptive data (or ‘characters’). This will depend on collection of sufficient comparable high quality descriptive data.

Middleton’s distinction between A.rubricaulis and A.poyaensis

(A.poyaensisis) ... is close to A.rubricaulis but differs from it in the attenuate leaf base, the leaf blade apex always being mucronate even when the leaf is rounded, the fewer flowered inflorescences and the extremely flat peduncles by which it is most readily identified.

Recorded evidence for this distinction

Does Middleton consider

deccurent to mean

attenuate?

mucronate is not a

‘distinguishing’ feature

only one specimen is

scored for this ‘distinguishing’

feature

alyxia banks ex r.br. alyxia rubricaulis subsp poyaensis boiteau alyxia rubricaulis (baill.)...

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