Hidden in the mountain: a new rare Syagrus (Arecaceae) with morphological novelties Author Sant’Anna-Santos, Bruno Francisco 0000-0002-8327-2081 Federal University of Paraná, Curitiba, Brazil Author Lopes Pereira Nunes, Elaine 0000-0002-8317-0472 National Coalition of Independent Scholars, Battleboro, United States of America Author Micheli, Rafael 0000-0002-3890-3737 Federal University of Paraná, Curitiba, Brazil Author Maria Teodoro Francino, Dayana 0000-0002-9160-1893 Federal University of Vales do Jequitinhonha e Mucuri, Diamantina, Brazil text Plant Ecology and Evolution 2025 2025-02-12 158 1 63 81 journal article 308113 10.5091/plecevo.140657 31e22f34-1f27-4554-9e1e-1b8578cb0490

Table 2. Differences in pinnae anatomy between S. harenae and S. aristeae, S. duartei, S. evansiana, and S. glaucescens.

	Syagrus harenae	Syagrus glaucescens	Syagrus duartei	Syagrus evansiana	Syagrus aristeae
Number of accessory vascular bundles around the main vascular system of the midrib	1	5	0	0	2
Number of collateral bundles in the vascular system of the midrib	4–5	4–5	4–5	1	3
Fibrous ring reaching the abaxial hypodermis	Present	Absent	Absent	Absent	Present
Non-vascular fibre bundle rounded attached to the abaxial surface	Present	Absent	Absent	Absent	Absent
Midrib format	Triangular	Truncate	Truncate	Triangular	Truncate
Tiny fibres in the abaxial hypodermis	Present	Absent	Absent	Present	Present
One adaxial vascular bundle near the margin	Sometimes	Absent	Absent	Absent	Absent
Large first adaxial fibre bundle near the margin	Present	Absent	Present	Present	Absent
Abaxial tertiary vascular bundles	Present	Present	Present	Absent	Present
Hypodermal cells rounded	Absent	Absent	Present	Absent	Absent
Small group of fibres around the fibrous ring of the midrib	Present	Present	Absent	Present	Present