144 PAPAVERACEAE. 



1. U. califomica (H, & A.) Nutt. Tree 4-15 m. high, growing 

 parts and inflorescence somewhat puberulent; leaves shining, dark 

 green, lanceolate-oblong, 5-10 cm, long; peduncles in 4 terminal 

 panicles or solitary in the upper axils, 6-10-flowered; sepals 3-5 

 mm. long, oblong-ovate; stamens included; drupes solitary or 2-3 

 in a cluster, 2 cm. long, becoming dark purple with thin pulp and 

 stone. 



Throughout our range in canyons, or on mountain slopes where 

 it is often reduced to an arborescent shrub. January-April. Fruit 

 in November. 



Family 37. PAPAVERACEAE. Poppy Family. 



Herbs or rarely shrubs with white, yellow or color- 

 less sap and alternate exstlpulate leaves or the upper 

 rarely opposite. Flowers solitary or in clusters, perfect, 

 regular or irregular. Sepals distinct or united into a 

 calyptra, caducous, 2, rarely 3 or 4. Petals 4-6 or rarely 

 none, imbricated, deciduous. Stamens numerous or few, 

 hypogynous, distinct; filaments filiform; anthers open- 

 ing by a longitudinal slit. Ovary 1, many-ovuled, 

 mostly 1-celled, the carpels rarely becoming distinct in 

 fruit; style short; stigma simple or divided; ovules an- 

 atropous. Fruit a capsule, generally dehiscent by pores 

 or valves. 



Flowers regular. 



Uppermost leaves opposite. 



Filaments very broad; carpels distinct in 



fruit. 1. Platystemon. 



Filaments filiform or nearly so; capsule 



1-celled. 2. Meconella. 



Leaves all alternate. 

 Flowers large, white. 



Perennial; capsule many-celled. 3. Romneya. 



Annual; capsule 1-celled. 7. Argemone. 



Flowers not white. 



Flowers yellow or orange. 



Shrub; flowers yellow. 4. Dendromecon. 



Herbs; flowers usually orange. 5. Eschscholzia. 



Flowers reddish. 



Stigmas tufted at the end of the short 



style. 6. Meconopsis. 



Stigmas sessile, radiate. 8. Papaver. 



Flowers irregular. 9. Bicuculla. 



