388 
Beekeeping 
Pepper tree, Schinus Molle. Southern California, introduced. 
Regular producer of nectar. Honey amber, strong flavor. 
Persimmon, Diospyros virginiana. Tree to 100 feet, May-June, 
eastern United States. 
Phacelia hispida and P. tanacetifolia. Of value in California. 
Honey of P. hispida granulates quickly. Species of Phacelia 
valued by beekeepers in Europe. 
Plantaginaceae ; see Plantain family. 
Plantain, Plantago spp. Pollen. 
Plantain family, PlantaginaceiB ; see Plantain. 
Pleurisy-root; see Milkweed. 
Plums, Prunus spp. Cultivated and various wild species. Spring. 
Polygonaceae ; see Buckwheat family. 
Polygonum lapathifolium and P. punctatum are of value in Cali¬ 
fornia. 
Poma rosa ; see Rose Apple. 
Poplar ; see Tulip Poplar. 
Poplars, Populus spp. Pollen. 
Poppy, Papaver spp. Pollen. 
Poppy family, Papaveraeea?; see Poppy, Prickly Poppy, Blood- 
root and California Poppy. 
Potato family, Solanacese; see Tobacco. 
Prickly pear ; see Cactus. 
Prickly poppy, Argemone platyceras. Texas, pollen, May-July. 
Pride of India ; seo China-tree. 
Primrose family, Primulace® ; see Loosestrife. 
Primulaceae ; see Primrose family. 
Privet, Ligustrum spp. Not important. 
Pumpkin ; see Gourd family. 
Purple medic ; see Alfalfa. 
Purple sage ; see Sage. 
Radish, Raphanus sativus. Pollen, nectar. 
Ragweed, Ambrosia elatior. Annual herb, 1-6 feet, July to frost, 
flowers in racemes, green. Throughout United States, a 
troublesome weed. An important source of pollen, yields 
no nectar. 
Ragweed family, Ambrosiaceas; see Ragweed and Cocklebur. 
Ranunculaceae ; see Crowfoot family. 
Rape, mustard, Brassica spp. Pollen and nectar. Especially 
valuable in California ( B. nigra). Honey granulates rapidly. 
Raspberry, blackberry, Rubus spp. Various species of value. 
Raspberry ; see also Wild Raspberry. 
Rattan vine, Berchemia scandens. Some surplus. Honey dark 
amber, April, Texas. 
