Pinus densa (Little & K.W. Dorman) Silba. Subgenus: Pinus. Section: Trifoliae. Subsection: Australes. clade: Elliottii. South Florida Slash Pine. Phen: Jan-Feb; Oct-Nov. Hab: Pine flatwoods, pine rocklands, scrubby flatwoods, wet pine (and cutthroat grass) savannas. Dist: Restricted to c. and s. peninsular FL. Falsely reported by Small (1933) for GA.

Origin/Endemic status: Endemic

Taxonomy Comments: Phylogenetic studies to date fail to show that Pinus densa is more closely related to Pinus elliottii than to other Southeastern United States or West Indian pines; its treatment as a variety of P. elliottii is therefore inappropriate. Pile et al. (2018) discuss differentiation of seedling morphology of Pinus densa, P. elliottii, and other southern pines.

Synonymy: = Pinus caribaea – S, misapplied; = Pinus elliottii Engelm. ssp. densa (Little & K.W.Dorman) A.E.Murray; = Pinus elliottii Engelm. var. densa Little & K.W.Dorman – FNA2, K1, K3, K4, SFla, Price (1989), Ward (1963); >< Pinus caribaea – S13; > Pinus densa (Little & K.W.Dorman) Silba var. austrokeysensis Silba; < Pinus elliottii Engelm. – Fl1, WH3

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Great Plains: FAC (taxonomic split from wetland indicator species)

Heliophily: 9