Sodré, Rodolfo Carneiro; Silva, Marcos José da
Croton sertanejus, a new species from Seasonally Dry Tropical Forest in Brazil, and redescription of C. echioides (Euphorbiaceae)
Fig. 6. Cross sections of the leaf blade of C. echioides Baill. (A, E–I, N–Q) and C. sertanejus Sodré & M.J.Silva sp. nov. (B–D, J–M, R–V). A. Median portion of the leaf blade of C. echioides, note the stipitate trichomes of abaxial surface in lateral view. B. Median portion of the leaf blade of C. sertanejus, note the sessile trichomes of abaxial surface in lateral view.C. Leaf margin of C. sertanejus, note simple trichomes of adaxial surface. D. Base of the trichome of adaxial surface of C. sertanejus. E. Vascular bundle of C. echioides. F–H. Median portion of the leaf blade of C. echioides. I. Leaf margin of C. echioides. J. Vascular bundle of C. sertanejus. K–L. Median portion of the leaf blade of C. sertanejus. M. Leaf margin of C. sertanejus. N. Primary vein of C. echioides. O. Detail of vascular cylinder of C. echioides primary vein. P. Collenchyma in adaxial surface of C. echioides primary vein. Q. Detail of the vascular bundle, note xylem, phloem, laticifer and druse. R. Primary vein of C. sertanejus. S. Detail of vascular cylinder of C. sertanejus primary vein. T. Collenchyma in adaxial surface of C. echioides primary vein. U. Detail of the epidermis and cortex of C. echioides primary vein. V. Detail of the vascular bundle, note xylem, phloem and druse. Arrowheads indicate stomata; asterisks indicate laticifers. Abbreviations: cl = collenchyma; co = cortex; d = druses; ep = epidermis; i = idioblasts; pa = ground parenchyma; ph = phloem; pp = palisade parenchyma; sp = spongy parenchyma; st = simple trichome; stt = stellate trichome; vb = vascular bundle; vc = vascular cylinder; xy = xylem. A, E–I, N–Q = R.C. Sodré et al. 3284 (BOTU); B–D, J–M, R–V = R.C. Sodré et al. 3350, holotype (BOTU). Scale bars: A–C, N, R = 200 µm; D–G, I–M, P–Q, T–V = 50 µm; H = 20 µm; O, S = 100 µm.
Fig. 7. Cross sections of the petiole of Croton echioides Baill. and C. sertanejus Sodré & M.J.Silva sp. nov. A–E. Croton echioides. A. Median portion of the petiole.B. Detail of accessory vascular bundles. C. Detail of the epidermis, cortex and vascular cylinder. D–E. Detail of vascular cylinder, laticifers, gelatinous fibers and druses. – F–J. C. sertanejus sp. nov. F. Median portion of the petiole. G. Detail of accessory vascular bundles. H. Detail of the epidermis and cortex. I–J. Detail of vascular cylinder, gelatinous fibers and druses. Asterisks indicate laticifers. Abbreviations: av = accessory vascular bundles; cl = collenchyma; co = cortex; d = druses; ep = epidermis; f = gelatinous fibers; p = pericycle; pa = ground parenchyma; ph = phloem; pi = pith; stt = stellate trichome; vc = vascular cylinder; xy = xylem. A–E = R.C. Sodré et al. 3284 (BOTU); F–J = R.C. Sodré et al. 3350, holotype (BOTU). Scale bars: A, F = 300 µm; B–D, G–H, J = 50 µm; C = 200 µm; E, I = 20 µm.
Almadina & de Almadina & Ibitupa & Fazenda Sao Roque
Dom Joaquim & Sao Domingos & de Conceicao & Nov. & Dec.
Refugio das Abelhas Professor Paulo Nogueira Neto