Dalea verticillata is described and illustrated as a new species from Oaxaca, Mexico. Dalea verticillata is similar to D. filiciformis, but it is distinguished by having whorled leaves (vs. alternate in D. filiciformis), with a greater number of leaflets ((31–)39–63(–69) vs. (11–)13–29(–37)), longer stipules (4.5–8 mm vs. 0.3–1.5 mm), reflexed (vs. ascending), persistent (vs. deciduous), terminal panicle inflorescences (vs. axillary racemes), and the wing petals subelliptic (vs. ovate). This is the second species of the hitherto monospecific subgenus Psoropteris, and the whorled-leaf character is recorded for the first time in the genus Dalea.

Dalea verticillata 被描述和说明为墨西哥瓦哈卡州的一个新物种。 Dalea verticillata 与 D. filiciformis 相似，但其特征在于具有轮生叶（相对于 D. filiciformis 中的互生叶），且小叶数量较多 ((31–)39–63(–69) 比 (11–) )13–29(–37))，较长的托叶（4.5–8 毫米与 0.3–1.5 毫米），反折（与上升），宿存（与落叶），顶生圆锥花序（与腋生总状花序），以及翼瓣近椭圆形（相对于卵形）。这是迄今为止单一特异性的 Psoropteris 亚属的第二个物种，并且在 Dalea 属中首次记录了轮生叶特征。