FIGURE 4 in Leaf anatomy and macro-morphological data support a new species of the legume genus Chamaecrista (Fabaceae, Caesalpinioideae) from Goiás, Brazil

FIGURE 4. Comparative anatomy of the median portion of the petiole in Chamaecrista taxa. A and H. General aspect. Chamaecrista barnebyana (A–G) and C. neesiana var. laxiracemosa (H–L); B and I. Vascular cylinder; C and J. Vascular bundles; D. Accessory vascular bundles; C–E and J–K. Detail of the libriform fibers; F and K. Detail of the epidermis and cortical region; G and L. Trichomes; G. Unicellular, acicular trichome; L. Multicellular, secretory, shortly stipitate trichome, with a bulbous base. ab = accessory vascular bundles; co = cortex; ep = epidermis; fb = libriform fibers; ph = phloem; vb = vascular bundles; vc = vascular cylinder; xy = xylem. Scale bars: A and H = 150 μm; B and I = 75 μm; C–D and J = 60 μm; E and K = 40 μm; G and L = 30 μm. Photomicrographs taken by Igor Soares dos Santos.