2= pyriform G Gibbosity Tuberculate bases of the cup scales1= present

Online Resource 2 Morphological variables

Morphology, geometric morphometrics, and taxonomy in relict deciduous oaks woods in northern Italy Rendiconti Lincei. Scienze Fisiche e Naturali

Elisa Proietti¹, Leonardo Filesi², Piera Di Marzio¹, Romeo Di Pietro³, Rizzieri Masin², Antonio Luca Conte¹, Paola Fortini¹

1 University of Molise, Department of Bioscience and Territory, 86090 Pesche, IS, Italy

2 University IUAV of Venice, 30135 Venice, Italy

3 University of Rome Sapienza, Department PDTA, 00196 Rome, Italy

Corresponding author: Romeo Di Pietro, romeo.dipietro@uniroma1.it

PUBESCENCE Ordinal

features BP Bud pubescence

Scale:

0 = absent; 1= rare; 2 =abundant TP Twig pubescence

StH Stellate trichomes type FH Fasciculate trichomes type LEAF

Dimensional

characters PL Petiole Length Leaf petiole length from the base of the lamina to the base of the petiole (cm)

LL Lamina Length Leaf lamina length (cm)

LW Lobe Width Width of the major lobe, from the apex of the lobe to the central axis coinciding with the main vein of the leaf (cm)

SW Sinus Width Distance between the maximum point of curvature of the sinus immediately below the main lobe and the main vein of the leaf (cm) WP Widest Point Distance between the apex of the major lobe and the base of the lamina

(cm) Transformed

characters OB Obversity WP/LL*100

PR Petiole Ratio PL/(LL+PL)*100

LDR Lobe Depth Ratio (LW-SW)/LW*100 LWR Lobe Width Ratio (LW/LL)*100 FRUIT

Dimensional

characters CL Cupule Length (mm)

CW Cupule Width (mm)

AL Acorn Length (mm)

AW Acorn Width (mm)

Transformed

characters CW/CL Cupule Width/Cupule Length Ratio between cupula width and lenght CL/AL Cupule Length/Acorn Length Ratio between cupula and acorn lenght Ordinal

features RCE Regularity of Cupule Edge 1= curved edge; 2= regular edge; 3= irregular edge SS Scale Shape 1= triangular; 2= pyriform

G Gibbosity Tuberculate bases of the cup scales1= present; 2= absent CIH Cupule Intern Hairness 1= absent; 2= poor; 3= medium; 4= abundant

TCE Type of Cupule Edge 1= scales discrete; 2= scales slightly protruding; 3= scales prying