318 PAPAVERACEAE 



2. A. intermedia Sweet. Stem stout, 3-10 dm. high, sparingly but strongly 

 prickly; leaves bluish green, glaucous, crisp, 1-3 dm. long; flowers usually short- 

 peduncled; sepals sparingly prickly; horns conical, spreading, 5-8 mm. long; 

 petals 3-4 cm. long; capsule oblong-fusiform, about 4 cm. long, with rather few 

 strong prickles. Plains: S.D. Tex. n Mex (? Utah) Wyo. Plain Sub- 

 mont. Je-Au. 



3. A. rotundata Rydb. Stem stout, densely and strongly prickly, but 

 otherwise glabrous; leaves oval in outline, the cauline ones sessile and broadly 

 auricled; flowers short-pedicelled or subsessile; calyx very bristly, its horns erect 

 or slightly spreading, flattened; petals fully 4 cm. long; pod oblong-fusiform, 

 4 cm. long, densely bristly. Sandy soil: Utah -Nev. Son. 'Submont. Je-Jl. 



4. A. hispida A. Gray. Stem 3-6 dm. high; leaves deeply pinnately cleft, 

 with oblong, coarsely spinulose-dentate lobes, prickly on the veins and hispidu- 

 lous between; calyx densely bristly, its horns 8-10 mm. long, triangular, bristly; 

 petals 3-4 cm. long; capsule oblong-fusiform, densely prickly with rather spread- 

 ing prickles. A. bipinnatifida Greene. Enomegra bipinnatifida A. Nels. E. 

 hispida A. Nels. Plains and hillsides: Kans. N.M. -Utah Wyo. Son. 

 Mont. Je-Jl. 



6. A. squarrosa Greene. Stem 4-10 dm. high, prickly and hispid; leaves 

 glaucescent, sinuate-pinnatifid and spinulose-dentate, hispid, 4-10 cm. long; 

 flowers sessile; calyx densely bristly; horns broadly triangular, prickly and hispid; 

 capsule nearly 5 cm. long. Plains: N.M. Colo. Kan. Son. 



5. PAPAVER (Tourn.) L. POPPY. 



Annual or in ours perennial herbs, with milky sap. Leaves alternate or in 

 ours basal, lobed or dissected. Flowers drooping in the bud, perfect. Sepals 2, 

 rarely 3. Petals 4, rarely 6. Stamens numerous. Ovary with 4-20 septiform 

 placentae; style none; stigma disk -like; ovules numerous. Capsule globose or 

 pyriform, opening by 4-20 tooth-like lids under the margin of the stigma. Seeds 

 scrobiculate, naked. 



Leaves densely hirsute; lobes lanceolate or oblong. 1. P. radicatum. 



Leaves glabrous or with a few bristles; lobes rounded. 2. P. pygmaeum. 



1. P. radicatum Rottb. A cespitose and scapose perennial; leaves basal, 

 numerous, 2-10 cm. long; blades 1-4 cm. long, usually twice ternately or pin- 

 nately dissected, coarsely hirsute; scape 5-15 cm. long, blackish hirsute; calyx 

 densely black-hirsute, elliptic in bud; petals yellow, 1-3 cm. long; pod obovoid, 

 fully 1 cm. long. P. coloradense Fedde. Exposed summits and bare hills: 

 Greenl. Lab. N.M. Alaska; arctic and subarctic Eurasia. Alp. Subalp. 

 Jl-Au. 



2. P. pygmaeum Rydb. A cespitose and scapose perennial; leaves all 

 basal, numerous, 2-3 cm. long; blade broadly ovate in outline, deeply cleft, 

 sparingly hispid or glabrous; scape 4-6 cm. high, sparingly hirsute; calyx obovate 

 in bud; petals yellow, 1 cm. or less long; pod obovoid, about 1 cm. long, densely 

 bristly. P. pseudocorydaliforme Fedde. Exposed summits: Mont. Alta. B.C. 

 Alp. Jl-Au. 



6. ESCHSCHOLTZIA Cham. CALIFORNIA POPPY. 



Annual or perennial herbs, with dissected leaves, watery juice, and yellow 

 flowers. Sepals 2, completely united into a cap, pushed off by the expansion of 

 the petals. Petals 4, deciduous. Hypanthium more or less developed. Sta- 

 mens numerous. Styles short and stout; stigmas 4-6, subulate. Capsule 

 2-valved, rarely 3-valved, usually from the base to the apex, the nerviform 

 placentae remaining attached to the valves. .Seeds globular, unappendaged. 



Petals 8-25 mm. long, broadly cuneate; stem scapiform; stamens many. 



Seeds superficially reticulate; lobes of the leaves oblong or linear, 1-2 mm. wide. 



1. E. mexicana. 

 Seeds deeply pitted; lobes of the leaves linear-filiform, about 0.5 mm. wide. 



2. E. glyptosperma. 

 Petals 3-6 mm. long, obovate; stem usually more or less leafy; stamens few. 



3. E. minuscula. 



