Oenothera (Pacbylophus) eaespitosa Gumbo, 
or Cowboy Lily. Snowy, fragrant, four-inch 
Evening - Primroses, among lanceolate glossy 
leaves, at the ground. May to August. Flowers 
are open all the day. Sharp drainage, lime. 
25c; 3, 65c. 
O. (Galpinsia) lavandulaefolia Two-inch, 
crinkly blossoms of clear, rich yellow, squar¬ 
ish, upright, open all the day and from June 
to frost; one of the bright jewels of the plains. 
Tiny grayish leaves, stems nearly prostrate. 
40c; 3, $1.00. 
O. (Meriolix) serrulata A shrubby plant with 
cupped Evening Primroses of bright lemon 
yellow. Open through the day and in bloom 
from May to August. 10”. Small plants of a 
very fine large flowered form, 50c each. 
Oreocarya glomerata Thick spikes of neat 
white Forget-me-nots, broadening into pani¬ 
cles. Six weeks, mainly June. Usually short¬ 
lived; clip back when through flowering. 20c; 
3, 50c. 
Orophaca (Astragalus) eaespitosa A silvery 
cushion of tri-parted leaves, smothered in 
April and May with a snow of stemless Pea 
blossoms. Often in company with Homalobus. 
A prize for the understanding gardener. 30c; 
3, 75c. 
O. tridactylica Red Orophaca. Very pleasing 
rose-lavender flowers on short stems. Foliage 
and habit like O. eaespitosa, treatment as foi 
Homalobus. Very rare. 50c; 3, $1.20. 
Oxytropis lamberti Loco. Many showy ra¬ 
cemes of rich toned Pea blossoms, red-purple to 
blue, from light to dark, upright to 12”, June. 
Silvery pinnate leaves at the ground are at¬ 
tractive all season. Easily accommodated in 
sand or gravel. 30c; doz. $3.00. 
Pacbylophus, see Oenothea. 
Parosela, see Dalea. 
Pentstemon Among the largest flowered and 
most showy are the plains species. Their na¬ 
tive soils are lean, with absorbent subsoil, and 
receive moderate moisture; here they are 
neither “touchy” nor impermanent. 
P. alhidus Close spires of large white blos¬ 
soms, May, June. 14”. Half sand. 20c; 3, 50c. 
P. angustifolius A wonderful love in brilliant 
azure, above glaucous stems and leaves. June, 
12”. Sand preferred. 25c; 3, 65c. 
P. eriantherus Large, warm lavender blos¬ 
soms with gold-hairy tongues, in handsome 
spires. Leaves dark, hairy. June. 8 to 12”. 
Lime, clay and sand. 25c; 3, 65c. 
P. glaber A fine dark blue, often touched with 
purple. June, July, and again if cut back. Usu¬ 
ally 18 or 20”. Very adaptable. 30c; 3, 85c. 
P. gracilis Graceful spikes of smaller, ame¬ 
thyst blossoms, to 12”, June, July. Some leaf- 
s mold. 30c; 3, 75c. 
Petalostemon purpureus Prairie Clover. Slen¬ 
der stems from the ground, with inconspicuous 
leaves, and many long heads of purple-red 
