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This section is still under construction but hopefully it will develop into a comprehensive account of the British Cyperaceae.

I am currently the BSBI referee for the yellow sedges, Carex flava agg., in the UK and actively involved in research into the status of Eleocharis mamillata s. l. in the UK. I also lead a Sedge identification course for the Field Studies Council at Blencathra. The next course will be running from 16th - 19th July 2010. Further details can be found at the FSC - Blencathra website.

 

PHOTO: BLACKSTOCK

Carex flava L. from Gait Barrows

 

Publications.

Blackstock, N. & Ashton, P. A. (2001) A re-assessment of the putative Carex flava agg. (Cyperaceae) hybrids at Malham Tarn (v. c. 64): A morphometric analysis. Watsonia 23: 505-516 Malham paper.pdf

Blackstock, N. and Jermy. A.C. (2001) Identification Yellow Sedges. British Wildlife 12: 345-352 pdf 5.17MB

Blackstock, N. (2007) A reassessment of the yellow sedges - Carex flava L. agg. (Cyperaceae) in the British Isles. Unpublished PhD thesis, University of Lancaster. Thesis.pdf

Blackstock, N. (2010) The status of Carex flava L. s.s. (Cyperaceae) in the British Isles. Proceedings of Malham Research Seminar, Malham Tarn Field Centre. FSC Malham. pdf

Blackstock, N. and Ashton, P. A. (2010) Genetic markers and morphometric analysis reveal past hybridization and introgression in putative Carex flava L. s.s (Cyperaceae) hybrid populations. Plant Systematics and Evolution pdf 285 kB

Bugg, C., Smith, C., Blackstock, N., Simpson, D., and Ashton, P. A. (2013) Consistent and Variable Leaf Anatomical Characters in the Genus Carex (Cyperaceae) Botanical Journal of the Linnean Society 172 (3): 371-384

Blackstock, N. and Smith, C. (2013) Validation of Carex x marshallii A. Benn. ex Blackst. & Col. Sm.
(=C. lepidocarpa Tausch x C. saxatilis L). New Journal of Botany
3 (2): 141-143

Koopman, J., Smith, C., Blackstock, N. (In Press) Carex tomentosa L. versus Carex filiformis L.: the long-standing debate comes to its happy end. Nordic Journal of Botany.


Holotype of Carex x marshallii A. Benn. ex Blackst. & Col. Sm.

(=C. lepidocarpa Tausch x C. saxatilis L.)

Conference Presentations


Blackstock, N. and Ashton, P. A. (1999) 'Long Term Monitoring of the Rare Large Yellow sedge (Carex flava L).' Poster: Long Term Monitoring Conference, July 11th 1999, Oxford University.

Blackstock, N. and Ashton, P. A. (1999) 'Long Term Monitoring of a Rare UK species (Carex flava L).' Poster: XVI International Botanical Conference, St. Louis, Missouri.

Blackstock, N. and Ashton, P. A. (2000) 'Flava or not flava? That is the question.' Oral presentation: Ecological Genetics Group Annual Conference. Edge Hill.

Blackstock, N. and Ashton, P. A. (2003) Variation in the Malham population of large yellow sedge (Carex flava L.) and its implications. Oral presentation: Malham Research Seminar, Malham Tarn Field Centre.


Blackstock, N. and Ashton, P. A. (2008) Poster: Monocots IV and Grasses V congress in Copenhagen 2008

Blackstock, N. (2009) The Status of Carex flava L. s.s. in the British Isles. Oral presentation: 6th Malham Research Seminar, Malham Tarn Field Centre.