174 Papaveraceae ; , 
PLATYSTIGMA CREAM-CUPS, 
Annual, low, slender. Leaves opposite or whorled, entire. Flowers white or yel- 
low, on long peduncles. Sepals 2—3, distinct. Petals 4 or 6, deciduous. Stamens 
6—12, rarely 4; filaments narrow. Carpels 3, rarely 4, wholly united into a 3-angled 
to nearly terete ovary. Seed smooth, shining. (Gk. platys—flat, -+stigma; some species 
have wide flat stigmas.) 
A. Plant glabrous; stem leafy; leaves 423 mm. long, the lower round to spatulate; 
petals white, 2—4 mm. long; stamens 4—6. W. C. 
P. oreganum B. & H. (White Cream-cups) 
AA. Plant somewhat villous; stem somewhat scape-like; leaves 25-50 mm. long, all 
linear; petals yellow, 8—12 mm. long; stamens many. U. 
P. lineare Benth. (Yellow Cream-Cups) 
PLATYSTEMON CREAM-CUPS 
Annual, low. Leaves mostly opposite or whorled, entire. Flowers yellow, on long 
peduncles, nodding when in bud. Sepals 3, distinct. Petals 6. Stamens many; filaments 
wide, flat. Carpels 6—18, at first all united in a circle into a deeply many-sulcate com- 
pound ovary by as many placentae, in fruit separating and closing into as many tortulose 
narrow follicles. Mature follicles inclined to break open transversely into a few |-seeded 
joints. (Gk. platys—flat, stemon—a stamen; the stamens have flat filaments.) U. 
P, californica Benth. (Long-leaved Cream-cups) 
ESCHSCHOLTZIA CALIFORNIA POPPY 
Herbs, glabrous; juice bitter, of the stem colorless, of the root red or yellow. Leaves 
alternate, finely dissected. Flowers bright yellow. Sepals 2, completely united into a 
conical cap, detached and pushed off by the growth of the petals. Petals 4. Stamens 
many; filaments short. Ovary linear; placentae 2; style very short; stigma divided into 
4—6 lobes; lobes linear, unequal, divergent. Capsule elongated, strongly 10-veined, 
opening usually from the bottom for the whole length by 2 valves. Seeds many. (Honor 
of J. F. Eschscholtz, a German botanist. ) 
A. Leaves ternately |—3-compound; flowers 2.510 cm. wide; dilated receptacle 
with expanded rim which is 0.56 mm. wide. 
B. Flowers 5—10 cm. wide; escaped from cultivation. W. E. 
E. californica Cham. 
BB. Flowers 2.55 cm. wide; native. W.E. (E. columbiana.) | 
E. douglasii Benth. ; 
AA. Leaves pinnate, 5-folioliate; flowers |—2.5 cm. wide; dilated receptacle without 
expanded rim. U. E. hypecoides Benth. 
PAPAVER POPPY 
Herbs, hispid or glaucous; sap milky, narcotic. Leaves alternate, lobed or dissected. 
Flowers nodding when in bud, showy. Sepals 2—3. Petals 46. Stamens many. 
Placentae numerous, projecting inward; stigmas united into a radiate persistent disk. Cap- 
sule globose or obovoid or oblong, opening near the tip. Seeds many. (Said to be from 
Celtic papa—pap; because poppy juice was formerly put into children’s food to make 
them sleep. ) 
A. Leaves pinnately parted; herbage hairy, not glaucous. 
B. Capsule club-shaped, stiff-hairy; native. E. 
P. argemone L. (Club Poppy) 


