Figure 15.5–Sequence alignment showing the first 120 bp of ITS-1 for 22 species of Arceuthobium. A dot indicates the same base as the reference (A. americanum). Ambiguous nucleotide designations follow IUPAC specifications (e.g., Y = C and T). Key: OXY = A. oxycedri, ABR = A. abietis-religiosae, AME = A. americanum, VER = A. verticilliflorum, PEN = A. pendens, GUA = A. guatemalense, PUS = A. pusillum, DIV = A. divaricatum, DOU = A. douglasii, GIG = A. gillii, NIG = A. nigrum, RUB = A. rubrum, VAC = A. vaginatum subsp. cryptopodum, VAV = A. vaginatum subsp. vaginatum, DUR = A. durangense, STR = A. strictum, ABM = A. abietinum f. sp magnificae, APA = A. apachecum, CAM = A. campylopodum, MIC = A. microcarpum.