Branch samples collected from 23 plots in northern Idaho and western Montana in 1975 had a combined mean distribution of 3.13 fascicles/inch (1.23 fascicles/cm) of branch length. By subsampling, it is possible to determine cumulative lineal inches of branch necessary to obtain a sampling unit of 100 fascicles for a plot, eliminating the need for counting fascicles on each sample.
United States Department of Agriculture, Forest Service, "Linear Measurement: A Method of Estimating Fascicle Numbers for Larch Casebearer Population Sampling" (1978). Forestry. Paper 66.