318 PAP AVER ACEAE 



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 — Siib- 

 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. hipinnatifida Greene. Enomegra hipinnatifida A. Nels. E, 



hispida A. Nels. Plains and hillsides: Kans.^N.M, — Utah — Wyo. Son, — ■ 

 Mont. Je-Jl. 



5. 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. 



6. PAPAVER (Tourn.) L. Poppy. 



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

 ours basal, lobed or dissected. Flow^ers 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, 

 nmnerous, 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 

 de.nsely 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 superficiaUy 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. 



