Table 2.

Origins of potential mycorrhizal fungi (MF) or dark-septate endophytes (DSE) per host plant per site. A total of 539 root segments were analyzed from the 11 sites.

Sitea	Host plant	Number of root segments analyzed	Number of isolates	Number of potential MF or DSEb
A	ARc	90	73	2
	ACd	84	53	3
B	AR	29	17	4
C	AR	54	49	13
D	AR	22	20	4
E	AR	12	5	0
	AC	27	26	0
F	AR	34	29	6
G	AR	33	21	4
H	AR	7	1	0
I	AR	10	7	3
J	AR	15	0	0
K	AR	122	64	11

^aSite descriptions are in Table 1.

^bIdentification of potential MF or DSE was determined by comparing the ITS1-5.8S-ITS2 region that was sequenced to previously sequenced fungi that are available at GenBank (https://www.ncbi.nlm.nih.gov/genbank).

^cAlnus incana ssp. rugosa.

^dAlnus alnobetula ssp. crispa.