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Ludwigia linearis Walter var. puberula Engelmann & A. Gray. Section: Isnardia. Western Narrowleaf Seedbox. Phen: Jun-Sep. Hab: Pine savannas, prairies, interdunal swales, ditches. Dist: Var. puberula ranges primarily from c. AL west to c. AR and e. MO, south to e. TX, with intergradational material extending as far north and east as n. FL and e. NC.

Origin/Endemic status: Endemic

Taxonomy Comments: Var. puberula is here interpreted to include Peng's intermediate morph, densely strigillose morph, and completely glabrous morph (Peng 1989). As pointed out by Peng (1989), the glabrous morph is exactly like the densely strigillose morph except for the absence of pubescence. They often grow together, have essentially the same distribution, and may differ only at a single allele. Peng's intermediate morph is heterogeneous; some likely being truly intermediate between (and possibly hybrid derivatives of) the two varieties here recognized, while others clearly belong to var. puberula (based on surface cell orientation and floral characteristics) and merely have an amount of pubescence intermediate between the densely strigillose and completely glabrous morphs.

Synonymy: < Ludwigia linearis Walter – Ar, C, F, Fl4, FNA10, G, GW2, K1, K3, K4, NcTx, RAB, S, S13, Tx, W, WH3, Peng (1989), Wagner, Hoch, & Raven (2007)

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
  • Great Plains: OBL (taxonomic split from wetland indicator species)

Heliophily: 8

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image of plant© Sonnia Hill | Original Image ⭷
image of plant© Sonnia Hill | Original Image ⭷
image of plant© Sonnia Hill | Original Image ⭷

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