Selected Publications: Michael G. Simpson (*=current or former students)

2014
Benet-Pierce, N. and M. G. Simpson. 2014. The taxonomy of Chenopodium desiccatum and C. nitens, sp. nov. Journal of the Torrey Botanical Society 141:161-172. (pdf)

Rebman, J. P. and M. G. Simpson. 2014. Checklist of the Vascular Plants of San Diego County, 5th edition. San Diego Natural History Museum Publications.

Simpson, Michael G. 2014. Review of Intermountain Flora: Vascular Plants of the Intermountain West, U.S.A. Subclass Magnoliidae– Caryophyllidae, Vol. 2A. By N. H. Holmgren, P. K. Holmgren, J. L. Reveal, and collaborators. 2012. The New York Botanical Garden Press, Bronx, New York. 742 pp. ISBN 978-0-89327- 520-4, Price $150.00, hardcover.  Madroño 61: 146-147. (pdf)

Simpson, M. G., K. Hasenstab-Lehman*, and R. B. Kelley. 2014. Typification of the name Johnstonella (Boraginaceae). Taxon, in press.

Simpson, M. G., R. Dowdy*, J. P. Rebman, R. B. Kelley, and L. M. Simpson. 2014. The recognition of two species in Eremocarya (Boraginaceae): Evidence from fornix bodies, nutlets, corolla size, and biogeography. Madroño 61: 259–275. (pdf)

2013
Guilliams, C. M.*, B. A. Veno, M. G. Simpson, and R. B. Kelley. 2013. Pectocarya anisocarpa, a new species of Boraginaceae, and a revised key for the genus in western North America. Aliso 31: 1-13. (pdf)

Silveira, M.* and Simpson, M. G. 2013. Phylogenetic systematics of the mesa mints: Pogogyne (Lamiaceae). Systematic Botany 38: 782-794. (pdf)

Simpson, M. G., J. P. Rebman, K. E. Hasenstab-Lehman*, C. M. Guilliams*, and P. McConnell. 2013. Cryptantha wigginsii (Boraginaceae): A presumed extinct species rediscovered. Madroño 60(1): 24-34. (pdf)

Simpson, M. G. and J. P. Rebman. 2013. A new species of Cryptantha (Boraginaceae) from the Sierra de San Pedro Mártir, Baja California, Mexico. Madroño 60(1): 35-45. (pdf)

Yost, J. M., M. Bontrager, S. McCabe, D. Burton*, M. G. Simpson, K. M. Kay, and M. Ritter. 2013. Phylogenetic relationships and evolution in Dudleya (Crassulaceae). Systematic Botany 38: 1096-1104 (pdf).

2012
Dodero, M. W.* and M. G. Simpson. 2012. Dudleya crassifolia (Crassulaceae), a new species from northern Baja California, Mexico. Madroño 59: 223-229. (pdf)

Hasenstab-Lehman, Kristen E.* and M. G. Simpson. 2012. Cat’s Eyes and Popcorn Flowers: Phylogenetic Systematics of the Genus Cryptantha s.l. (Boraginaceae). Systematic Botany 37: 738–757. (pdf)
   NOTE: Winner of the Grady Webster Award, given by the American Society of Plant Taxonomists, for best publication during the two year period 2012-2013!

Kelley, R. B., M. G. Simpson, and K. E. Hasenstab. 2012. Cryptantha. Pp. 455-468 in B. G. Baldwin, D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken (eds.), The Jepson Manual: Vascular Plants of California. Second Edition. University of California Press, Berkeley, Los Angeles, London.

Silveira, M., M. G. Simpson, and J. D. Jokerst. 2012. Pogogyne. Pp. 850-851 in B. G. Baldwin, D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken (eds.), The Jepson Manual: Vascular Plants of California. Second Edition. University of California Press, Berkeley, Los Angeles, London.

2011
Guilliams, C. M.*, Simpson, M. G., and J. P. Rebman. 2011. Calyptridium parryi var. martirense (Montiaceae), a new taxon endemic to the Sierra San Pedro Mártir, Baja California, Mexico. Madroño 58(4): 258-266. (pdf)

2010
Simpson, M. G., C. M. Guilliams*, and M. Silveira*. 2010. Taxonomy of Calyptridium parryi (Montiaceae). Madroño 57: 145-160. (pdf)

Benet-Pierce, N. and M. G. Simpson. 2010. Chenopodium littoreum (Chenopodiaceae),  a new goosefoot from dunes of south-central coastal California. Madroño 57: 64-72. (pdf)

Simpson, Michael G.  2010.  Plant Systematics, 2nd edition.  Elsevier-Academic Press. (web site)

2009
Simpson, Michael G. and Kristen E. Hasenstab*. 2009. Cryptantha of Southern California. Crossosoma 35: 1-59. (pdf)

Pierce, Nuri and Michael G. Simpson. 2009. Polyaperturate pollen types and ratios of heteromorphism in the monocot genus Conostylis R. Br. (Haemodoraceae). Australian Systematic Botany 22: 16-30. (pdf)

2007
Winner, Annette and Michael G. Simpson.  2007.  A new subspecies of Pentagramma triangularis (Pteridaceae).  Madroño 54(4): 345-353. (pdf)

2006
Rebman, Jon P. and Michael G. Simpson.  2006.  Checklist of the Vascular Plants of San Diego County.  4th edition.  San Diego Natural History Museum, San Diego, California. 

Simpson, Michael G. 2006. Plant Systematics. Elsevier-Academic Press. (web site)
   NOTE: Winner of the Gleason Award, New York Botanical Garden, 2006!

Simpson, Michael G. and Darren H. Burton*.  2006.  Floral anatomy of the Pontederiaceae and its systematic significance.  Aliso 22: 499-519. In: Columbus, J. T., E. A. Friar, J. M. Porter, L. M. Prince, and M. G. Simpson [eds.].  Monocots:  Comparative biology and evolution.  2 vols.  Rancho Santa Ana Botanic Garden, Claremont, California, U. S. A. (pdf)

2003 and earlier
Lori Hargrove and Michael G. Simpson.  2003. Ultrastructure of heterocolpate pollen in Cryptantha (Boraginaceae).  International Journal of Plant Sciences 164(1): 137-151. (pdf)

Evans, Timothy M., Robert B. Faden, Michael G. Simpson, and Kenneth J. Sytsma.  2000.  Phylogenetic relationships in the Commelinaceae: I. A cladistic analysis of morphological data.  Systematic Botany 25: 668-691. (pdf)

Marsden, Kim L.* and Michael G. Simpson.  1999.  Eryngium pendletonensis (Apiaceae), a new species from southern california.  Madroño 46(1): 55-58.

Simpson, Michael G.  1998.  Reversal in ovary position from inferior to superior in the Haemodoraceae: evidence from floral ontogeny.  International Journal of Plant Sciences 159(3): 466-479. (pdf)

Simpson, Michael G.  1998.  Haemodoraceae.  In: Kubitski, ed. Families and Genera of Flowering Plants.   Volume IV. Flowering Plants Monocotyledons. Alismatanae and Commelinanae (except Gramineae). Pp. 212-222. Springer, Berlin.

Simpson, Michael G. and Rudall, P.  1998.  Tecophilaeaceae.  In: Kubitski, ed. Families and Genera of Flowering Plants.   Volume III. Flowering Plants Monocotyledons. Lilianae (except Orchidaceae). Pp. 429-436. Springer, Berlin.

Simpson, Michael G.  and Levin, G. A.  1994.  Pollen ultrastructure of the biovulate Euphorbiaceae.  International Journal of Plant Sciences 155: 313-341. (pdf)

Levin, Geoffrey A., and Michael G. Simpson.  1994.  Phylogenetic implications of pollen ultrastructure in the Oldfieldioideae (Euphorbiaceae).  Annals of the Missouri Botanical Garden 81: 203-238. 

Levin, Geoffrey A., and Michael G. Simpson.  1994.  Phylogenetic relationships of Hymenocardia and Didymocistus (Euphorbiaceae).  Annals of the Missouri Botanical Garden 81: 239-244. 

Simpson, Michael G.  1993.  Septal nectary anatomy and phylogeny in the Haemodoraceae.  Systematic Botany 18: 593-613. (pdf)

Simpson, Michael G.  1990.  Phylogeny and classification of the Haemodoraceae.  Annals of the Missouri Botanical Garden 77: 722-784. (pdf)

Simpson, Michael G.  1989.  Pollen wall development of Xiphidium coeruleum (Haemodoraceae) and its systematic implications.  Annals of Botany 64: 257-269. (pdf)

Simpson, Michael G.  1988.  A critique of "Bromeliales, related monocots, and resolution of relationships among Bromeliaceae subfamilies."  Systematic Botany 13: 610-614. 

Simpson, Michael G.  1988.  Embryological development of Lachnanthes caroliniana (Haemodoraceae).  Amer. J. Bot. 75: 1394-1408. (pdf)

Simpson, Michael G.  1987.  Pollen ultrastructure of the Pontederiaceae:  evidence for exine homology with the Haemodoraceae.  Grana 26: 113-126. (pdf)

Simpson, Michael G.  1985.  Pollen ultrastructure of the Tecophilaeaceae.  Grana 24: 77-92. (pdf)

Simpson, Michael G.  1985.  Pollen ultrastructure of the Philydraceae.  Grana 24: 23-31.

Simpson, Michael G.  1983.  Pollen ultrastructure of the Haemodoraceae and its taxonomic significance.  Grana 22: 79-103.

Simpson, Michael G. and W. C. Dickison.  1981.  Comparative anatomy of Lachnanthes and Lophiola (Haemodoraceae).  Flora 171: 95-113.

 

Non-referred publications

Simpson, Michael G., E. Gergus, and S. C. McMillan.  2005.  Laboratory Manual for Organismal Biology: an Evolutionary Approach. 7th edition.  Rhynchops Press, San Diego, California.

Simpson, Michael G.  2013.  Plant Collecting and Documentation Field Notebook.  Rhynchops Press, San Diego, California.