FUMAlilACExE. (FL'MITORY FAMILY.) 13 



2. N. polysepalum, Engelm. Larger- leaves 6 to 12 inches loug, 



rounded above, di(jj/'/ cordate at base : sepals 8 to 12 : petals dilated and unlike 

 the stamens, often tinged with red : fruit globular. — Muuutaiu lakes iu Colo- 

 rado, westward and northward. 



Order 4. PAPAVERACE.E. (Poppy Family.) 



Herbs, usually with niillcy or orange-yellow juice ; sepals 2 or 3, 

 caducous; petals twice as many, in two sets ; stamens iinWIinite ; ovary 

 1 -celled, with parietal placenta?; seeds numerous. — Leaves alternate, 

 without stipules. Petals imbricated and commonly crumpled in the 



I)Ud. 



1. Papaver. Ovaiy incompletely several-celled by the projecting placenta;. Stigraaa 



united into a radiate crown. Pod opening by chinks or pores under the edge of 

 the stigma. 



2. Argeinone. Ovary strictly 1-celIed. Pod opening by valves, and with the leaves 



prickly. 



1. PAPAVER, L. Poppy. 



Sepals 2. Stigma 4 to 20-rayed. Pod short and turgid. — Herbs with a 

 white juice, and nodding flower-buds. 



1. P. nudicaule, L. Scape l-flowered, 2 to 3 inches high, naked, hi.«*pid 

 as well as the calyx with brownish hairs : leaves lance-ovate in outline, deeply 

 pinnatifid : petals lemon-yellow : pod obovate, hispid. — P.alpinumoi the Fl. 

 Colorado. Alpine. Colorado and in Arctic America. 



2. ARGEMONE, L. Prickly Poppy. 



Sepals 2 or 3, often prickly. Stigma 3 to 6-rayed. Pod oblong ; seedft 

 crested. — Well marked by the prickly bri.>*tles and yell«)w juice Leaves 

 sessile, sinnate-lobed, with prickly teeth. Flower-buds erect. 



1. A. platyceras, Link & Otto. Erect, 1 to 2.\ feet high, hispid 

 throughout or nrnied with rigid bristles or prickles : lower leaves attenuate 

 to a winged petiole; the upper sessile or auriculate-clasping : flowers white: 

 pod oblong. — .1. hispida, Cray. Colorado to Mexico and westward. 



It is doubtful whether^!. Mexicana occurs in Colorado, but it ranges farther 

 iouth. 



Order 5. FUlflARIACE.i:. (Fumitory Family.) 



Tender herbs, \\\\\\ watery juice, dissected compound leaves, perfect 

 rregular hypogynous flowers with parts in twos, except the diaddpl-ous 

 Xamens which are 6, ovary 1 -celled, seeds, etc. as in V(ipnvnnre,r. to 

 jvhich order Bentham & Hooker have united it. 



1. Dicentra. Corolla heart-shaped (in ours) at the base. 

 •J Corydalis. Corolla l-spuiTcd at the baae. 



