Fig. 3.

δ¹³C and δ¹⁵N values in plants and ectomycorrhizal (ECM) fungi collected at site A (A) and site B (B). Bars indicate standard errors, and squares surrounded by dotted lines indicate values for chlorophyllous plants and ECM fungi (see Tables S1 and S2). Chlorophyllous plants, achlorophyllous plants, ECM fungi and green, mixotrophic plants are shown dark green, red, brown–red and light green, respectively. Abbreviations for Orchidaceae: Ca, Cymbidium aberrans; Ce, Cephalanthera erecta; Cm, Cymbidium macrorhizon; Cl, Cymbidium lancifolium; Cs, Cyrtosia septentrionalis; Gs, Goodyera schlechtendaliana; Ln, Lecanorchis nigricans; Li, Liparis nervosa; Za, Zeuxine agyokuana. Abbreviation for Ericaceae: Mu, Monotropa uniflora.