Cyperus prophyllatus: An endangered aquatic new species of Cyperus L. (Cyperaceae) with a exceptional spikelet disarticulation pattern among about 950 species, including molecular phylogenetic, anatomical and (micro)morphological data
Fig 5
Micrographs taken by Scanning Electron Microscopy (SEM) from leaves and spikelets of Cyperus prophyllatus, sp. nov. Taken from holotype A.R.O. Ribeiro et al. 487 (CVRD).
(A–C) Leaf blade. (A) Adaxial surface. (B) Abaxial surface. (C) Leaf blade margin surface viewed from the abaxial side. (D) Ligule surface viewed from the adaxial side. (E) Spikelet prophyll surface viewed from the abaxial side showing a protuberant articulation at base, ciliate single-celled hairs at the margins, and some glumes above the prophyll apex. (F–H) Glume surface viewed from the abaxial side. (F) View of glume showing ciliate single-celled hairs at the margins, the glabrous mucron at the apex, and the style arising from the glume axil. (G) Detail of glume epidermis showing rows of thick-walled epidermal cells tabular or square-shaped and the common epidermal cells. (H) Detail of glume mucron showing stomata. CC = common epidermal cell, CH = ciliate single-celled hair, Es = Stomate, G = Glume, M = mucron, Pk = prickle, RA = rachilla articulation, SP = spikelet prophyll, St = Style, TW = thick-walled epidermal cell. Scale bars: A, B, D, G = 10 μm. C = 50 μm. E–F = 100 μm. H = 20 μm.