P, CCNFERTUS Dougl. we 3H 
White, 6-18" pH=6 JunesJuly. 
P, BRIANTHERUS Pursh. or var.SALIENS 
Large, mottled flowers. *' 
Lavender, under 12". pH=7 May-June. 
P, FRUTICOSUS 
Woody shrub. 
(Pursh) Greene, 
Blue. 2! pH-5-6 June. 
Penn. 
mountain in Idaho where 
to go but seldom do, 
8-12" pHe6é “June-July. 
P. KIRKWCODIT 
Abundant on a 
I always wish 
Cream-whito, 
P. MICRANTHUS Nutt. 
Knothead flower clusters. 
Bluc.e 10-18" pH-6=7 June=July. 
*P. MISSOURIENSIS Penn. 
My home town Pentstemon. Intense 
blue, abundant flowers. 
Blue, Ole" pH-7 May-June. 
Long, gray leaves, 
Lazy growth habit, 
abundantly, 
sky-bluo fls. 
but fruits 
Blue, 8-10" pu-7 =9 May-June. 
P,. OVATUS PINETORUM Piper. 
= ie COMET Rey 
Fairly large growing, but desirable. 
Best in shady, wild garden. 
Biue, i4!? pHebe7 May-July. 
PERIDERIDIA GAIRDNERI (H.& 
Squaw-root . Dormant. 
PHACELLA HETEROPHYLLA Pursh, 
or, P. LEUCOPHYLLA Torr. 
- PHILADS:,.PHUS LEWISITI Pursh. 
Mock Oré Fiagrant flowered shrub. 
showy. pH-6=7 June-July. 
ATC ts 
Ns, 
pay? 
*PHLOX BRYCIDES Nutt. 
Commuct, caesvitose gray foliage, 
Abundenc oO mites from here. 
“mali, hlue-white fls. pH-8 
*P, CABNSPITOSA Nutt. 
FOLTOSA inod, Wherry. 
Tiis and the following three, larger 
flowered cacspitose phloxes. 
Pink-cacspitosco. pH-7 
ssp. Nova 
May. 
P. DIFFUSA Benth. ssp. 
SCLERANTHIFOLIA (Rydb.) Wherry. 
Lilace-caespitose,. pH=5 JUNC. 
*P, DOUGLASII Hook. ssp. 
MISSOULIENSIS Wherry. 
Known only from once hill. 
Blucecaespitose. pH-7 May-June. 
P, DOUGLASII Hook. ssp. 
RIGIDA (Genth.) Wherry. 
Resombles above, but more bush- 
like in growth. 
Bluce a6" pHe6=7 May. 
PHYLLODOCE EMPETRIFORMIS (Sm. )G.Don. 
Evergreon. Red fis, 1! 
May~June. 
pH-5 July. 
eb¢ 
15¢ 
40¢ 
eg 
20¢ 
20¢ 
20¢ 
A, Mathias. 10¢ 
per doz. 35¢ 
10¢ 
3¢ 
15¢ 
a5¢ 
, 25¢ 
ebg 
25g 
35g 
Soil acidity is expressed heréin as pH- 
and a figure. pH-/7'is neutral. Higher 
figures are alkaline lower acid. Drain- 
age, moisture, light and temperature 
are of at least equal importance. best 
to order plants im quantity and try in 
somewhat varied situations. 
PHYSARIA GEYURT (Hook.) Gray. 25¢ 
Twinpod. 
Yeliow. -6"  pH-7-8 May. 
PHYSCSTRGIA PARVIFLORA Nutt. 2o¢ 
Likes its feet wet, 
Rosa-parpie. 1-3! pH6=7 June-Aug. 
* POLEMONIUM HAYDENIIT A. Nels. 15¢ 
Rock sliass. 
Blue. white. 12" pH=5-6 May-Aug. 
P. OCCIDENTALE Greene. any 
Boge 
P, CONFERTUM A. Gray. 25¢ 
Mt. valleys. 
PERSICARTIA, see POLYGONUM 
POLYGONUM AMPHIBIUM Hook. 30g 
Water Lady's Thumb. 
*P. BISTORTOIDES Pursh. 15¢ 
Dormant root fall. June-July. 
Pinkish white, 12-18" pHe5-6 Doz. 50¢ 
P, BISTORTA var. LINEARIFOLIUM 15¢ 
S. Wats. 
P. VIVIPARUM L. L5¢ 
POLYSTICHUM, see under ADIANTUM 
* POTENTILLA CONVALLARIA Rydb. 20g 
Cream-white., 10-18" pH=7 Apr-May. 
*P, FRUTICOSA L, 35¢ 
Shrubby Cinquefoile 
Yellowe 2? ph-5-6 June-July. 
P. NUTTALLII Lehm. 25¢ 
Yellow. ig-2i pH-6 July. 
. ANSERINA L. var. SERICSA Hayne. 20¢ 
Yellow. Low, plo Summer » 
And about 75 other speciese tf just 
any Cingnefois will do, 10¢ 
PRENANTUNS ALATA (Hook.) D. Dietr. 25¢ 
Resembles sernacio, but white rls» 
PRUNELL-A VULG'RIS ie 20¢ 
Hairhell.. 
Blue@eiy Gy anDoee June » 
PRUNUS @MARGIN.TA (Dougl.) Walp. 350 
Bitter: Cherian 
P, MOLANOCARPA (A,Nels.) Rydb. 20¢ 
Chokecherry. 
White. 1.0' pHe7 June. 
PURSHIA TRIDE'TATA (Pursh) MP. 35¢ 
Bitter-brush, 
Yellow fls. 8! 
Shiny) for dry places.. 
pH-7=8 June e 
