Abstract
AbstractDalea 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.
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