Senna atomaria
Senna durangensis
flor de San Jose, flor de san josé, palo zorillo
Durango senna
5–55-flowered, not spikelike;
bracts early caducous, to 5 mm.
13–28 mm.
asymmetric, enantiostylous;
calyx greenish to yellow;
corolla yellow-orange, slightly dark-veined, longest petal 12–23 mm, highly asymmetric, 1 or both lower petals highly modified, strongly concave and folded over stamens (flag-shaped);
androecium slightly heterantherous, stamens 7 (similar in shape and size, abaxial ones slightly longer), staminodes 3;
anthers 2.8–5 mm, dehiscing by 2 short slits, apical appendage 0;
gynoecium incurved, ovules 46–70;
ovary glabrate, sometimes becoming hairy after fertilization;
style stout.
pendulous, flat, straight, 220–370 × 80–140 mm, woody, indehiscent or splitting transversely into woody segments.
reddish brown, obovoid to oblong-obovoid.
Senna atomaria
Senna durangensis
As with other trees from deciduous and semi-deciduous vegetation, Senna atomaria is covered with flowers before developing the foliage (H. S. Irwin and R. C. Barneby 1982). In the flora area, it occurs naturalized only very locally in Collier County (R. P. Wunderlin et al., http://florida.plantatlas.usf.edu/).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 2 (1 in the flora).
Senna durangensis has often been confused with S. pilosior, which is characterized by a persistent calyx (H. S. Irwin and R. C. Barneby 1982); see discussion under 20. S. pilosior for differences.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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