20 PAPAVERACE^E. 



anthers 2-celled, innate. Ovary 1 ; style short or none. Fruit 

 1 -celled, either pod-shaped or capsular, with several placentae. 

 Seeds numerous, with a minute embryo. Herbaceous plants 

 or shrubs, often with a milky juice. Leaves alternate, more or 

 less divided. Peduncles long, 1 -flowered. 



1. ARGEMONE. Linn. Prickly Poppy. 



(From the Greek apycpa, a disease of the eye; supposed to be relieved by this 

 plant.) 



Petals 4 6. Stamens many. Style scarcely any. Stigma 

 4 7-lobed ; lobes radiately reflexed, persistent. Capsules obo- 

 vate, spinose, 1 -celled, 5-valved ; valves opening at the apex. 



A. Mezicana Linn. 



Banks of streams. Penn. to Flor. W. to the Platte River. June, July. Op. 

 Stem 2 3 feet high, branching, armed with prickles- Leaves sessile, pin- 

 natifid, repand-sinuate, margins and veins beneath armed with spines. Flowers 

 axillary and terminal, large, yellow or white. Probably introduced. 



Common Prickly Poppy. 



2. SANGUINARIA. Linn. Blood-root. 



(From the Latin sanguis, blood ; in allusion to the color of its juice.) 



Sepals 2, deciduous. Petals 8 12. Stamens 24. Stigmas 

 2, connate. Capsule oblong, 1 -celled, 2-valved, ventricose, 

 valves deciduous. 



. Canadensis Linn. 



Woods. Throughout the U. S. and Can. April, May. 1\.. Root tuberous, 

 affording a bitter orange-colored juice, which contains a vegeto-alkaline prin- 

 ciple. Leaves radical, reniform or cordate. Flowers large, white, solitary. 

 Medicinal. Emetic, &c. Big. Med. Bot. i. 75. Tully on Sanguinaria.Am. 

 Med. Recorder, vol. xiii. Red Puccoon. Blood-root. 



3. MECONOPSIS. D. C. Meconopsis. 



(From the Greek //??* uv, a poppy, and oi//ty, appearance ; on account of its re- 

 semblance to the poppy.) 



Petals 4. Stamens many. Style short. Stigma 4 6, ra- 

 diating, convex, free. Capsules obovate, 1 -celled ; valves 4 6, 

 dehiscent at the apex. 



1. M. diphyUa D. C. : leaves 2, sessile, hairy ; lobes rounded and obtuse ; 

 capsules 4-valved, echinate. Ckelidonium diphyllum Mich. PursJi. Stylo- 

 phorum diphyllum Nutt. 



Woods. Penn to Miss. S. to Tenn. May. 1|. Stem a foot high. Leaves 

 glaucous. Flowers yellow. Abundant in Indiana. Two-leaved Meconopsis. 



2. M. petiolata D. C. : leaves 2 3, on long petioles, smoothish : cap- 

 sules echinate. StyLophortim petiolatum, Nutt. 



Alleghany Mountains. Hooker. Shady woods on the banks of the Ohio. 



