144 PAPAVERACEAE 



Northampton ; Bucks ; Chester ; Lancaster ; Huntingdon ; Dew- 

 ware ; Al,I<EGHENY. 



Order 12. PAPAVERALES. 



Sepals 2, or very rarely 3 or 4 : endosperm present. 

 Flowers regular: stamens 8 or numerous : juice usually milky or colored. 



Fam. 1. PAPAVERACEAE. 



Flowers irregular : stamens 6 : juice usually watery. 



Fam. 2. FUMARIACEAE. 



Sepals 4-8 : endosperm wanting. 

 Capsules 2-celled : stamens 6, tetradynamous. Fam. 3. Cruciferae. 

 Capsules i-celled : stamens when 6, not tetradynamous. 

 Calyx and corolla regular : gynoecium 2-carpellary : capsule 2-valved. 



Fam. 4. Capparidaceae. 

 Calyx and corolla irregular : gynoecium 3-6-carpellaty : capsule 3-6-valved. 



Fam. 5. Resedaceae. 



Famii,y I. PAPAVERACEAE B. Juss. Poppy Family. 

 Caulescent herbs : petals 4-6, mostly crumpled : stigmas over the placentae. 

 Capsule dehiscent at the top or only to the middle. 

 Leaf-blades unarmed. i. Papaver. 



Leaf -blades spiny-toothed. 2. Argemone. 



Capsule splitting to the base. 

 Capsule pubescent. ' 3. Stylophorum. 



Stigma mitre-shaped, with a deflexed or spreading base on each side : 



capsule leathery, 2-celled by a spongy partition. 4. Glatjcium. 

 Stigma simple ; capsules membranous, i-celled. 5. Chelidonium. 



Acaulescent herbs : petals 8-12, not crumpled in the bud : stigmas over the 

 valves of the capsule. 6. Sanguinaria. 



1. PAPAVER L. 

 Plants glabrate, glaucous : leaves with lobed clasping blades : capsule sub- 

 globose. I. P. somniferum. 

 Plants hirsute, green : leaves with pinnately divided blades. 

 Capsule glabrous. 

 Capsule subglobose or turbinate. ^. P. Rhoeas. 

 Capsule oblong above the narrowed base. 3. P. dubium. 

 Capsule hispid. 4. P. Argemone. 



1. Papaver somniferum L. Opium or Garden Poppy. (Man. p. 

 438 ; I. F. /■ 16^8. ) In waste grounds and on ballast. Fugitive from 

 'Bn. — Pennsylvania : Northampton; Philadei,phia ; Lancaster; 



DEI.AWARE ; Al<I<EGHENY. 



2. Papaver Rhoeas L. FiELD, RED OR Corn Poppy. (Man. p. 438 ; 

 I. F. /. i6sg.) In waste places and on ballast. Fugitive from Eu.— 

 Pennsylvania : Phii,adei,phia. 



3. Papaver dubium L. Long Smooth-fruiTEd Poppy. (Man. p. 

 438 ; I. F. / 1660. ) In waste and cult, grounds, Pa. to Va. and souih- 

 y^axA. — Pennsylvania : Northampton; Chester; Delaware; Lan- 

 caster ; Franklin. 



4. Papaver Argemone L. Long Rough-fruited Poppy. (Man. p. 

 438 ; I. F. /. 1661. ) Waste grounds and pn ballast. Fugitive from Eu. 

 — Pennsylvania: Philadelphia. 



