43 8 FLORA. 



* Flowers regular. 

 Pod dehiscent at the top, or only to the middle. 



Leaves not spiny-toothed. i. Papaver. 



Leaves spiny-toothed. 2. Argemone. 



Pod dehiscent to the base. 



Flowers white; juice red. 3. Sanguinaria. 



Flowers and juice yellow. 



Capsule oblong or short-linear, bristly. 4. Stylophorttm. 



Capsule long-linear, rough, tipped with a dilated stigma. 5. Glaucium. 



Capsule linear, smooth, tipped with a subulate style and minute stigma. 



6. Chelidonium. 

 ** Flowers irregular. Family FUMARIACEAE DC. 



Each of the 2 outer petals spurred at the base. 



Corolla deeply cordate at base; petals slightly coherent. 7. Btcuculla. 



Corolla rounded or slightly cordate; petals permanently coherent, persistent. 



8. Adlunria. 

 One of the outer petals spurred at base. 



Capsule 2-valved, few-several-seeded. 9. Capnoides. 



Fruit globose, indehiscent, i-seeded. 10. Fmnaria. 



I. PAPAVER L. 



Sap milky. Leaves lobed or dissected, alternate. Flowers and flower-buds 

 nodding. Sepals 2 or occasionally 3. Petals 4-6. Stamens oo . Anthers ex- 

 trorse. Ovules oo , borne on numerous internally. projecting placentae. Stigmas 

 united into a radiate persistent disk. Capsule globose, obovoid, or oblong, de- 

 hiscent near the summit. Seeds marked with minute depressions. [Classic Latin 

 name of the poppy.] About 25 species, mostly natives of the Old World, but 2 or 

 3 indigenous in western America. 



Glabrate and glaucous; leaves lobed, clasping; capsule subglobose. i. P. somniferum. 

 Green, hirsute: leaves pinnately divided. 



Stems branching, leafy; weeds of waste or cultivated ground. 

 Capsule glabrous. 



Capsule subglobose or top-shaped. 2. P. Rhoeas. 



Capsule oblong, narrowed below. 3. P. ctubium. 



Capsule oblong, hispid with a few erect hairs. 4. P. Argemone. 



Leaves all basal ; capsule obovoid, densely hispid with erect hairs; arctic. 



5. P. alpinum. 



1. Papaver somniferum L. OPIUM OR GARDEN POPPY. (I. F. f. 1658.) 

 Erect, glaucous, 3-9 dm. high. Leaves clasping by a cordate base, 1-2 dm. long, 

 oblong, wavy, lobed or toothed; flowers 7-10 cm. broad, bluish-white with a 

 purple centre; filaments somewhat dilated upward; capsule glabrous. Occasional 

 in waste grounds and on ballast. Fugitive from Europe. Summer. 



2. Papaver Rhoeas L. FIELD, RED OR CORN POPPY. (I. F. f. 1659.) Erect, 

 3-9 dm. high, hispid with spreading bristly hairs. Lower leaves pttioled, 1-1.5 

 dm. long, the upper smaller, sessile, all pinnatifid; lobes lanceolate, acute, serrate; 

 flowers 5-10 cm. broad, scarlet with a darker centre; filaments not dilated; capsule 

 glabrous, the disk with IO or more stigmatic rays. In waste places and on ballast. 

 Me. to Va. Fugitive from Europe. Summer. 



3. Papaver dubium L. LONG SMOOTH- FRUITED POPPY. (I. F. f. 1660.) 

 Slender, 3-6 dm. high, hirsute with spreading hairs. Lower leaves petioled, 

 1-1.5 d m - l n g tne u PP er smaller, nearly sessile, all deeply pinnately divided; 

 lobes oblong, pinnatifid, cleft or sometimes entire; flowers 5 cm. broad, scarlet, 

 sometimes darker in the centre; filaments not dilated; capsule oblong, glabrous, 

 1.6-2 cm. long, narrowed below; stigmatic rays 6-10. In waste and cultivated 

 grounds, Penn. to Va. and southward. Adventive from Europe. Summer. 



4. Papaver Argemone L. PALE OR LONG ROUGH-FRUITED POPPY. (I. F. f. 

 1661.) Slender, 3-6 dm. high. Leaves all but the upper petioled. lanceolate in 

 outline, pinnately divided, the divisions pinnatifid and toothed; flowers 2-5 cm. 

 broad, pale red, often with a darker centre; filaments not dilated; capsule oblong, 

 1.6-2 cm. long, narrowed at the base, bristly-hairy. Waste grounds, Philadelphia, 

 and in ballast about the seaports. Fugitive from Europe. Summer. Old name 

 Wind-rose, 



