Woody-plant Seed Manual

60 days acid americana black locust California canadensis ceanothus cleaned seed collected Commercial seed cones cultivated days at 41 deciduous DISTRIBUTION dormancy dried drupe eastern eastern white pine embryo endosperm epigeous Exterior view EXTRACTION fall FIELD PRACTICE FIGURE Forest Forestry Fruit ripening game food germination germination tests Germinative capacity Germinative energy given in table illus inch Jour longitudinal section Low Average High moist sand Natural range nigra Number Number Number NURSERY AND FIELD occidentalis ornamental ornamental planting peat Percent Percent Pinus pistillate planting Platanus pumila var purity samples sand flats sealed containers seed coat seed crops Seed dispersal seed per pound Seed views seedbed SEEDING HABITS seedlings seeds per test shrub soaking soil southern sowing sown species spring spruce storage stored stratified seed sulfuric acid Symphoricarpos tion Tsuga U. S. Dept usually viability Viburnum virginiana winter Woody-Plant Seed Manual Yield of cleaned