Chamaecrista is a genus of flowering plants in the pea family, Fabaceae, subfamily Caesalpinioideae. Members of the genus are commonly known as sensitive pea. Several species are capable of rapid plant movement. Unlike the related genera Cassia and Senna, members of Chamaecrista form root nodules. Species Chamaecrista comprises the following species, organized into sections, subsections, and series: Section Apoucouita Benth. Series Apoucouita Chamaecrista aiarana (H.S.Irwin) H.S.Irwin & Barneby Chamaecrista apoucouita (Aubl.) H.S.Irwin & Barneby Chamaecrista aspidiifolia H.S.Irwin & Barneby Chamaecrista bahiae (H.S.Irwin) H.S.Irwin & Barneby Chamaecrista boyanii (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista compitalis (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista duartei (H.S.Irwin) H.S.Irwin & Barneby Chamaecrista eitenorum (H.S.Irwin & Barneby) H.S.Irwin var. eitenorum (H.S.Irwin & Barneby) H.S.Irwin var. regana (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista ensiformis (Vell.) H.S.Irwin & Barneby var. ensiformis (Vell.) H.S.Irwin & Barneby var. maranonica (H.S.Irwin) H.S.Irwin & Barneby var. plurifoliolata (Hoehne) H.S.Irwin & Barneby Chamaecrista hymenaeifolia (Benth.) H.S.Irwin & Barneby Chamaecrista negrensis (H.S.Irwin) H.S.Irwin & Barneby var. albuquerquei (H.S.Irwin & Barneby) H.S.Irwin var. negrensis (H.S.Irwin) H.S.Irwin & Barneby Chamaecrista onusta H.S.Irwin & Barneby Chamaecrista polystachya (Benth.) H.S.Irwin & Barneby Chamaecrista scleroxylon (Ducke) H.S.Irwin & Barneby Chamaecrista subpeltata (Rizzini) H.S.Irwin & Barneby Chamaecrista xinguensis (Ducke) H.S.Irwin & Barneby Series Pteridophyllae Chamaecrista adiantifolia (Spruce ex Benth.) H. S. Irwin & Barneby var. adiantifolia (Spruce ex Benth.) H. S. Irwin & Barneby var. pteridophylla (Sandwith) H.S.Irwin & Barneby Chamaecrista aspleniifolia (H.S.Irwin & Barneby) H.S.Irwin Section Absus DC. ex Colladon emend. Irwin & Barneby Subsection Absus DC. ex Colladon Series Absoideae Chamaecrista acosmifolia (Benth.) H.S.Irwin & Barneby var. acosmifolia (Benth.) H.S.Irwin & Barneby var. euryloba (H.S.Irwin & Barneby) H.S.Irwin var. oropedii (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista amiciella (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista andersonii (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista barbata (Nees & Mart.) H.S.Irwin & Barn Chamaecrista belemii (H.S.Irwin & Barneby) H.S.Irwin var. belemii (H.S.Irwin & Barneby) H.S.Irwin var. paludicola (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista brevicalyx (Benth.) H.S.Irwin & Barneby var. brevicalyx (Benth.) H.S.Irwin & Barneby var. elliptica (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista campestris H.S.Irwin & Barneby Chamaecrista carobinha (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista chapadae (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista egleri (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista fagonioides (Vogel) H.S.Irwin & Barneby var. fagonioides (Vogel) H.S.Irwin & Barneby var. macrocalyx (H.S.Irwin & Barneby) H.S.Irwin Chamaecrista hispidula (Vahl) H.S.Irwin & Barneby Chamaecrista jacobinea (Benth.) H.S.Irwin & Barneby Chamaecrista juruenensis (Hoehne) H.S.Irwin & Barneby Chamaecrista longicuspis (Benth.) H.S.Irwin & Barneby Chamaecrista multiseta (Benth.) H.S.Irwin & Barneby Chamaecrista