-36- 
Number 
Plant 
Common name 
tested 
Pink, Grass 
See Dianthus. 
__ 
Pinkbells 
See Heuchera lithophila. 
— 
Pinus mugo 
Swiss Mountain Pine 
825 
mughus 
Mugho Swiss Mountain Pine 
201 
Piper magnificum 
. . - 
10 
nigrum 
Black Pepper 
15 
ornatum 
Celebes Pepper 
15 
Pisum sativum 
Garden Pea, Radio 
40 
Plantainlily 
See Host a. 
-- 
platycerium alciorna 
See P. bifurcatum. 
— 
angolense 
Angola Staghornfern 
5 
bifurcatum 
Common Staghornfern 
5 
ma jus 
_ _ _ 
5 
grand e 
Giant Staghornfern 
5 
hilli 
Green Staghornfern 
5 
vassei 
_ _ _ 
5 
willincki 
Java Staghornfern 
5 
platycodon grandiflorum 
Balloonflower 
410 
Praecox Giganteum 
600 
album 
White Balloonflower 
1,300 
azureum 
Azure Balloonflower 
1,500 
caeruleum 
Skyblue Balloonflower 
200 
mariesi 
Maries Balloonflower 
550 
Plectranthus certendahlia 
_ _ _ 
20 
Plumbago coccinea 
See Plumbago rosea coccinea. 
— 
larpentiae 
See Ceratostigma plumbaginoides. 
— 
rosea coccinea 
Scarlet Plumbago 
30 
Poa compressa 
Canada Bluegrass 
— 
pratensis 
Kentucky Bluegrass 
— 
trivialis 
Rough-stalked Bluegrass 
— 
Poinsett ia 
See Euphorbia. 
— 
Polemonium sp. 
Polemonium, Blue Pearl 
1,035 
humile 
See P. pulcherrimum. 
— 
pulcherrimum 
Skunkleaf Polemonium 
100 
reptans 
Creeping Polemonium 
985 
Polygonatum multiflorum 
Eurasian Solonomseal 
200 
Polypodium aureum mandianum 
Manda Golden Polypody 
50 
subauriculatum knightiae 
Knight Jointed Polypody 
5 
Polyscias balfouriana 
Balfour Polyscias 
10 
polystichum sp. 
Hollyfern 
6 
acrostichoides 
Christmasfern 
3,2^0 
tsussimense 
Tsussima Hollyfern 
50,000 
Poppy 
See Papaver. 
— 
Potato 
See Solanum. 
— 
Potent ilia sp. 
Potentilla, Gold Drop 
75 
and i co la 
Colombian Cinquefoil 
50 
fruticosa purdomi 
Purdom Bush Cinquefoil 
23 
tridentata 
Wifleleaf Cinquefoil 
500 
verna nana 
Dwarf Spring Cinquefoil 
200 
Pothos argyraeus 
See Scindapsus pictus. 
— 
aureus 
See Scindapsus aureus. 
— 
wilcoxi 
See Scindapsus aureus wilcoxi. 
— 
Pricklypear 
See Opuntia. 
— 
Primrose 
See Primula. 
— 
