Chamaecrista choriophylla Irwin & Barneby 1982

Key to Chamaecrista choriophylla and related taxa

1. Stem terete; extrafloral nectaries sessile (Fig. 1 D) ............................................................ Chamaecrista choriophylla

-. Stem quadrangular to 4-alate; extrafloral nectaries shortly pedicellate (Fig. 1 H, M)................................................ 2.

2. Stipules 2.0–4.0 mm long, base rounded or truncate, sometimes cordate at opposite side to petiole, apex acute or long acuminate, side veins 4–8 (Fig. 1 L); pedicels 8.0– 14.5 mm long Fig. 1 J).................. Chamaecrista rossicorum

-. Stipules 6.5–18.0 mm long, base cordate and amplexicaule in both sides, more cordate opposite to petiole, apex long acuminate, side veins 11–24 (Fig. 1 G); pedicels 22.5–42.0 mm long (Fig. 1 F) ....................... Chamaecrista latifolia