Dalea pinnata var. adenopoda
Rupert C. Barneby
52c. Dalea pinnata (J. F. Gmelin) Barneby var. adenopoda (Rydberg) Barneby
(Plate LXI)
Characters as given in varietal key. — Collections: 10 (o).
Dry sandy openings and hillocks in oak-pine woodland, usually on the sterile white sands favored by D. feayi, Ceratiola, etc., reportedly not uncommon (but not much collected) in s. peninsular Florida, s. to the latitude of Fort Lauderdale, Broward County, n.-w. to Tampa and n. on the east side of the peninsula to Seminole County (and ? St. Augustine); cf. Wemple, 1970, map 1. —Flowering September to January (March).—Representative: Small 9307 (NY); Thorne 1265 (UC); C. Hitchcock s. n. (NY); Small & Carter 1041 (NY).
Dalea pinnata (J. F. Gmel.) var. adenopoda (Rydb.) Barneby, stat. nov., based on Kuhnistera adenopoda (with gland-tuberculate stem) Rydb., N. Amer. Fl. 24: 136. 1920.— "Type collected at Tampa, Florida, October, 1877, A. P. Garber..." — Holotypus, GH! isotypus, NY! — Petalostemon adenopodum (Rydb.) Wemple, Iowa State Jour. Sci. 45(1): 23, fig. 6 (A-H). 1970. P. corymbosum var. adenopodum B. L. Robins, ex Rydb., N. Amer. Fl. 24: 136, in syn., nomen.
Kuhnistera truncata (square-cut, of the epistemonous petals) Small, Bull. Torrey Club 51: 381. 1924.— "The type specimens were collected at Earman, Florida, by Fannie C. Rane, March 2, 1921...also collected at Jupiter, Florida...by C. Hitchcock." — Holotypus, NY! paratypus (Hitchcock), cited above, NY!
The var. adenopoda suggests a generally coarsened form of var. pinnata in which the leaflets, involucre, and petals have all become proportionately broader and the glands, at least high on the stems, bigger and therefore more protuberant. The epistemonous petals are a little longer than those of var. pinnata, in the size-range of var. trifoliata, but obtuse. My concept of the entity is in no way different from P. adenopodum Wemple except that I interpret it, laying stress on similarities rather than differences, as a geographic subspecies of D. pinnata rather than as an autonomous species. The ranges of the two are for the most part distinct, a line drawn east and west through the peninsula in the latitude of Tampa separating most known stations of each. If the doubtful records (Mary Reynolds) from St. Augustine are disregarded the zone of overlap is hardly greater than that ^etween var. pinnata and var. trifoliolata, and the morphological discontinuity is, in my opinion, hardly wider. The calyx of all forms of D. pinnata is the same.
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.Multimedia:
