POPPY FAMILY 



231 



2. Argemone platyceras Link & Otto. Chicalote or Broad-horned 



Prickly Poppy. Fig. 1902. 



Argemone platyceras Link & Otto, Ic. PI. Rar. 1: 85. pi. 43. 1828. 

 Argemone munita Dur. & Hilg. Journ. Acad. Phila. II. 3: 37. 1855. 



Stems stout, branched, 5-8 dm. high, more or less prickly with long yellow spines. Leaves 

 oblong to oblong-obovate, 5-15 cm. long, sinuate-pinnatifid into spinose-toothed lobes, spinose, 

 especially along the veins, otherwise glabrous and glaucescent; inflorescence paniculate, leafy; 

 sepals more or less densely spiny with mostly ascending spines, their horns prominent, strongly 

 spine-tipped and spinose, especially on the outer surface ; petals 6, obovate, truncate, 25-40 mm. 

 long, white; capsule cylindric, 2-5 cm. long, becoming indurate, densely spiny. 



Dry washes and sandy plains, Sonoran Zones; lower Sacramento Valley, California, to northern Lower 

 California, and east to Texas and northern Mexico. Type locality: Hacienda de la Laguna Confre Perote, 

 Mexico. June-Aug. 



Argemone platyceras var. hispida (A. Gray) Prain. Journ. Bot. 33: 1895. {Argemone hispida A. 

 Gray, Mem. Amer. Acad. II. 4: 5. 1849.) Stems and leaves densely setose-hispid between the prominent 

 spines. Dry washes, Lake County and the San Joaquin Valley to southern California, east to New Mexico. 



10. ARCTOMECON Torr. & Frem. in Frem. Second Rep. 312. pi. 2. 1845. 



Perennial herbs with somewhat woody taproots, the stems several from the cespitose 

 base, subscapose. Leaves mostly basal, toothed at the apex and densely long-hirsute, those 

 of the stem few or none, when present alternate and often entire. Flowers large, showy, 

 white or yellow, peduncled. Sepals 2, glabrous or pubescent. Petals 4 or 6, tardily de- 

 ciduous. Stamens numerous with slender filaments. Pistil with 3-6 carpels; style short; 

 stigmas 3-6, short and thick; ovary 1-celled, with nerve-like parietal placentae; capsule 

 obovoid to subcylindric, dehiscent from above, the 3-6 valves separating from the per- 



1898. Glaucium flavum 



1899. Stylomecon heterophylla 



1900. Papaver californicum 



1901. Argemone corymbosa 



1902. Argemone platyceras 



