Dalea pinnata var. trifoliata

Rupert C. Barneby

52b. Dalea pinnata (J. F. Gmelin) Barneby var. trifoliata (Chapman) Barneby

(Plate LXI)

Characters as given in key; 2n = 14 (Wemple, 1970, p. 12). — Collections: 18 (0).Sandy pinewoods and pine-palmetto savannahs, Gulf Coastal Plain w.-ward from lower Pearl River in extreme s.-e. Mississippi, s. Alabama, and the Florida Panhandle, thence n.-e. in scattered stations across centr. Georgia to the Savannah River near Augusta; cf. Wemple, 1970, map 1. —Flowering September-November. —Representative: Mississippi: Pennell 4392 (NY). Alabama: Mohr s. n. (NY). Florida: Curtiss 6934 (NY, UC); Godfrey & Krai 54,174 (NY); Chapman in Biltmore Herb. 818 (NY, UC). Georgia: Eggleston 5106 (NY); Cuthbert 189 (NY).

Dalea pinnata (J. F. Gmelin) var. trifoliata (Chapman) Barneby, comb. nov., based on Petalostemon corymbosus var. trifoliatus (3-leaved, meaning trifoliolate) Chapm., Fl. S. U. S. ed. 3, 101. 1897.— No typus or collector mentioned. — Lectotypus (Wemple, 1970, p. 28), Biltmore Herb. [Chapman] 6097 from Appalachicola, Fla., in Oct. 1897, US! — Petalostemon pinnatum ssp. trifoliatum (Chapm.) Wemple, Iowa State Jour. Sci. 45(1): 27. 1970.

Gatesia alabamensis (of Alabama) Bertoloni, Miscell. Bot. fasc. 7: 31, tab. 1, fig. 1 a-c. 1848.— "Dr. Gates detexit in Alabama..." — Holotypus, formerly at BOLO, destroyed (fide Wemple, 1970); presumed isotypus, labelled "Alabama, Dr. Gates, 1831", NY (herb. Torr.)!

Essentially like var. pinnata except for the trifoil primary stem-leaves, slightly longer epistemonous petals, and often simpler mode of branching. Nomenclature apart, my concept is that of Wemple, 1970.

 

References: [Article] Barneby, Rupert C. 1977. Daleae Imagines, an illustrated revision of Errazurizia Philippi, Psorothamnus Rydberg, Marine Liebmann, and Dalea Lucanus emen. Barneby, including all species of Leguminosae tribe Amorpheae Borissova ever referred to Dalea. Mem. New York Bot. Gard. 27: 1-892.

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