210 
Nymphaea caerulea, 131; capensis, 
131; castaliaflora, 132; “Mrs. “Ed- 
wards Whitaker,” 133; var. “mar- 
morata,”’ 134 
0. 
Observations of a landscape gardener 
abroad, 58 
Ohlweiler, W. W. Private herbarium 
consisting of plants of Connecticut 
and Missouri, also numerous horti- 
cultural varieties, 46 
Oils, 179 : 
Olea cuspidata, 180; europaea, 180 
Olive trees, 66; see Olea europaea 
Olive wood, see Hlaeodendron orien- 
tale 
O’Neal, R. F., and Daniels, Edward 
e. birds observed by, in the Garden, 
8 
Orange, see Citrus Aurantium 
Orchids, 12, 105; epiphytic, 100; lady 
slipper, 43 
Ordeal-tree, see Cerbera Tanghin 
Ornamentals, 181 
Oxyanthus natalensis, 166 
P. 
Pachira campestris, 185 
Pansies, 92 
Papaver orientale, 151 
Papaws, 112; description of, 113; 
propagation of, from seed, 116; re- 
wards offered for the best, 113 
Papaw tree, see Carica Papaya 
Paradisea Liliastrum, 182 
Parasol tree, Chinese, see Sterculia 
platanifolia 
Parkia Roxburghii, 166 
Patchouli, see Pogostemon Heyneanus 
Pepper, Jamaica, see Pimenta offici- 
nalis 
Pepper plant, see Piper nigrum 
Pepper tree, California, see Schinus 
Molle : 
Perfumes, 183 
Persea gratissima, 166; indica, 182 
Phlox, hardy, 121; culture of, 123; 
horticultural varieties shown at the 
Garden, 123; origin of present-day 
forms, 121; propagation of, 122 
Phlow canadensis, 122; Laphamii, 
122; maculata, 121; paniculata 
(decussata), 121; subulata, 122 
Phormium tena, 185, var, atropur- 
pureum, 185 
Phosphorescence, 
occurrence of, in 
plants, 150 
MISSOURI BOTANICAL GARDEN BULLETIN 
Phyllanthus speciosus, 182 
Physic-nut plant, see Jatropha Cur- 
cas 
Pilocarpus pennatifolius, 179 
Pimenta acris, 158; officinalis, 159 — 
Pimento, see Pimenta officinalis 
Pinus Laricio var. austriaca, 153 
Piper amplum, 159; angustifolium, 
179; geniculatum, 159; nigrum, 
159; unguiculatum, 159 
Piptadenia rigida, 176 
Pistacia chinensis, 176; Khinjuk, 176; 
Lentiscus, 176; Terebinthus, 179 
Pitanga, see Eugenia uniflora 
Pithecolobium dulce, 167; filicifolium, 
167 
Pittosporum Tobira, 73 
Plantago Rugelii, 125 
Plants in economic house, 157, 175 
Platycerium alecicorne, 98, 99 
Plum, date, see Diospyros montana; 
Indian, see Flacourtia Ramontchi ; 
Japanese, see Hriobotrya japonica; 
Kaffir, see Harpephyllum caffrum; 
marmalade, see Lucuma mammosa ; 
Natal, see Carissa grandiflora; Sap- 
odilla, see Achras Sapota; Sebes- 
ten, see Cordia Myxa 
Plumeria bicolor, 183; rubra, 183 
Plumbago, 66 
Pogostemon Heyneanus, 184 
Poinsettias, 43, 186 
Poppy, 151 
Portland, Oregon, phases of landscape 
work in, 70 
Potatoes, 143; experiments with, 68, 
69 
Prunus lusitanica, 73 
Psidium, 167; acre, 167; Araca, 167; 
Cattleianum, 167; chinense, 167; 
cuneifolium, 167; Guajava, 167; 
littorale, 167; pyriferum, 167 
Psilotum triquetrum, 100 
Publications and papers published by 
the staff and graduate students dur- 
ing 1915, 18 
R. 
Railroad agriculture, 73; departments 
of, 74; object of, 74 s 
Raisin tree, Japanese, see Hovenia 
dulcis 
: Rambutan, see Nephelium Longana 
Reinwardtia, 186 
Research and instruction, report of, 
for 1915, see annual report of 
Director, 14 
Rhododendron, 43, 194, 196 
Rose garden, 105 
