Fig. 1
(A, E, I, M) Baccharis brevifolia DC.; (B, F, J, N) Baccharis microdonta DC., (C, G, K, O) Baccharis pauciflosculosa DC., (D, H, L, P) Baccharis trilobata A.S. Oliveira & Marchiori; (A, B, C, D) vegetative and reproductive branch. (E, F, G, H) Abaxial side of leaf epidermis and (I, J, K, L) adaxial side of leaf epidermis, showing epidermal cell walls and stomatum (st). (M, N, O, P) View of the leaf surface, stomatum (st), striated cuticle (ct), non-glandular trichome (nt), and glandular trichome (gt) by SEM; Scale bar = 5 cm (A, B, C, D), 50 µm (E, F, G, H, I, J, K, L), 20 µm (M, N, O).
Fig. 2
(A) Baccharis brevifolia DC., (B) Baccharis microdonta DC., (C) Baccharis pauciflosculosa DC., (D) Baccharis trilobata A.S. Oliveira & Marchiori. Cross-section of the leaves, showing collenchyma (co), cuticle (ct), epidermis (ep), endodermis (en), fibers (fi), palisade parenchyma (pp), phloem (ph), spongy parenchyma (sp), secretory duct (sd), stomatum (st), trichomes in cluster (tc), vascular bundle (vb), and xylem (xy). Scale bar = 100 µm (B), 50 µm (A, C, D).
Fig. 3
(A) Baccharis brevifolia DC., (B) Baccharis microdonta DC., (C) Baccharis pauciflosculosa DC., (D) Baccharis trilobata A.S. Oliveira & Marchiori. Cross-section of the midribs, showing cambium (ca), collenchyma (co), endodermis (en), fibers (fi), phloem (ph), secretory duct (sd), stomatum (st), vascular bundle (vb), and xylem (xy). Scale bar = 50 µm.
Fig. 4
Baccharis microdonta DC. Petiole in cross-section. (A) General appearance showing a vascular bundle (vb). (B) Detail of the vascular bundle, showing endodermis (en), fibers (fi), phloem (ph), secretory duct (sd), and xylem (xy). Scale bar = 200 µm (A), 50 µm (B).
Fig. 5
(A) Baccharis brevifolia DC., (B) Baccharis microdonta DC., (C) Baccharis pauciflosculosa DC., (D) Baccharis trilobata A.S. Oliveira & Marchiori. General appearance of the stem in cross-section. Scale bar = 50 µm.
Fig. 6
(A) Baccharis brevifolia DC., (B) Baccharis microdonta DC., (C) Baccharis pauciflosculosa DC., (D) Baccharis trilobata A.S. Oliveira & Marchiori. Stem in cross-section, showing chlorenchyma (cl), collenchyma (co), cuticle (ct), epidermis (ep), endodermis (en), fibers (fi), glandular trichome (gt), phloem (ph), secretory duct (sd), and xylem (xy). Scale bar = 50 µm.
Fig. 7
(A, B) Baccharis brevifolia DC., (C) Baccharis microdonta DC., (D) Baccharis pauciflosculosa DC., (E, F, G) Baccharis trilobata A.S. Oliveira & Marchiori. Stem in cross-section, showing perimedullary region with crystals, sand (sa), stiloyds with pointed ends (slp), stiloyds with square ends (sls), square dipyramids (sd), elongated square dipyramids (esd), and tabular crystals in piles (tb). Scale bar = 10 µm (A, B, C, D).
