Clark, J.R., W.L. Wagner, & E.H. Roalson. 2009.  Patterns of diversification and ancestral range reconstruction in the southeast Asian–Pacific angiosperm lineage Cyrtandra (Gesneriaceae). Mol. Phylogenet. Evol. doi:10.1016/j.ympev.2009.09.002 Link.

Clark, J.R., R.H. Ree, M.E. Alfaro, M.G. King, W.L. Wagner, & E.H. Roalson. 2008. A comparative study in ancestral range reconstruction methods: retracing the uncertain histories of insular lineages. Systematic Biology 57: 693-707. PDF.

Clark, J.R. 2008. Gesneriads at the edge of the world...with notes on current research efforts at Selby Gardens. Gesneriads 58: 35-38. PDF.

Clark, J.R. & J.L. Clark.  2008. Drymonia decora (Gesneriaceae), a new species from the Fila Costeña, Costa Rica. Selbyana 29: 147-151. PDF.

Clark, J.L. & J.R. Clark.  2008. Drymonia collegarum (Gesneriaceae), a new species from Ecuador. Selbyana 29: 152-156. PDF.

Clark, J.R. 2008. Phylogeny, ancestral range reconstruction and partial taxonomic revision of Pacific Cyrtandra (Gesneriaceae). Doctoral Dissertation. Washington State University. Pullman, WA. 109 pp.

Clark, J.R. 2008. Understanding Cyrtandra. MelanesianGeo 7: 12-14.

Pence, V.C. & J.R. Clark. 2005. Desiccation, cryopreservation and germination of seeds of the rare wetland species, Plantago cordata Lam. Seed Science and Technology 33: 767-770.

Clark, J.R. 2005. Why Cyrtandra? The Gloxinian 55(3): 34-40.

Clark, J.R., B.K. Holst and L. Skog. 2003. An annotated checklist of Gesneriaceae type specimens in the Marie Selby Botanical Gardens Herbarium (SEL). Selbyana 24(2): 1-34. PDF.

Clark, J.R. 2004. In Memoriam: Hans Wiehler 1931-2003. Selbyana 24(1): i

Pence, V.C., J.R. Clark, and B.L. Plair. 2003. Wild and endangered species. In: In vitro collecting techniques for germplasm conservation (Vol. Ed. J.M.M. Engels). International Plant Genetic Resources Institute (IPGRI) Technical Bulletin 7: 76-82.

Clark, J.R. 2003. Gesneriad Research at Selby Gardens. The Tropical Dispatch 30(1): 4.

Clark, J.R. 2003. My introduction to tropical field biology. The Gloxinian 53(4): 35-40.

Clark, J.R. 2003. The Gesneriad Research Foundation Herbarium and the Hans Wiehler Legacy. The Gloxinian 53(3): 23-27.

Clark, J.R. 2000. Sporophyte development in the ephemeral moss Eccremidium floridanum Crum (Ditrichaceae, Musci). Masters Thesis. University of Cincinnati, Cincinnati, OH. 42 pp.

Clark, J.R. 2000. Defining our global ecosystem and the importance of Biological diversity. CREW ReView XVII(2): 6.

Snider, J., K.L. Yip, and J.R. Clark. 1999. Astomiopsis magilliana (Ditrichaceae, Musci) sp. nov. from Natal. The Bryologist 102: 119-121. PDF.

Clark, J.R. 1999. The Florida Scrub.  Wildlife Explorer V(10): 12-13.

Clark, J.R. 1999. A few must die so that others may live...the role of herbaria in plant conservation. CREW ReView XVI(2): 4.

Clark, J.R. 1999. Using IVC to collect endangered plants. CREW ReView XVI(1): 4.

Pence, V. and J.R. Clark. 1998. Can You Name an Endangered Plant?  Wildlife Explorer IV(2): 13.

Clark, J.R. 1997.  CREW Plants Seeds of Success. Wildlife Explorer III(2): 12.