148 BERBERIDACEAE. 



Family 56. BERBERIDACEAE. BARBERRY FAMILY. 



Primary leaves of the shoots reduced to spines ; in their axils short branches with 



secondary, unifoliate leaves. i. BERBERIS. 



Primary leaves of the shoots pinnate ; no spines. 2. ODOSTEMON. 



i. BERBERIS L. BARBERRY. 



i. Berberis Fendleri A. Gray. In the mountains of Colo, and N. M. Alt. 

 6000-7000 ft. Durango; Mancos ; Arboles; Mancos Canon. 



2. ODOSTEMON Raf. OREGON GRAPES. 



Fruit becoming dry and inflated at maturity ; leaflets less than 3 cm. long ; shrub 

 15-36 dm. high. i. O. Fremontii. 



Fruit fleshy, not inflated at maturity; leaflets 3-6 cm. long; shrub prostrate, 1-3 

 dm. high. 2. O. Aqiiifolnnn. 



1. Odostemon Fremontii (Torr.) Rydb. (Berberis Fremontii Torr.) In the 

 mountains of Colo., Utah, N. M. and Ariz. Smith Fork Canon, Delta Co. 



2. Odostemon Aquifolium (Pursh) Rydb. (Berberis Aquifoliuin Pursh; B. 

 re pens Lindl.) On hills from Mont, and Ida. to N. M. and Calif. Alt. 4000- 

 10,000 ft. Vicinity of Horsetooth ; Horsetooth Gulch ; Rist Canon ; Clear 

 Creek Canon, above Golden; Platte Canon; Ouray; Snake River; hills south- 

 east of La Veta ; East Indian Creek ; Veta Mountain ; canon of La Plata 

 River; foot-hills, Larimer Co.; about Ouray; Lake City; near Boulder. 



Order 26. PAPAVERALES. 



Sepals 2 or 3 ; endosperm present. 



Flowers regular; stamens in ours numerous. 57. PAPAVERACEAE. 



Flowers irregular ; stamens 6, diadelphous. 58. FUMARIACEAE. 

 Sepals 4, rarely more ; endosperm wanting. 



Capsule 2-celled ; stamens 6, tetradynamous, rarely 2 or 4. 59. BRASSICACEAE. 



Capsule i-celled; stamens not tetradynamous, 6 or more. 60. CAPPARIDACEAE. 



Family 57. PAPAVERACEAE Juss. POPPY FAMILY. 



Capsule opening by many dentiform lids under the stigma ; placentae ceptiform. 



i. PAPAVER. 

 Capsule opening by 4-6 valves at the summit ; placentae nerviform. 2. ARGEMONE. 



i. PAPAVER L. POPPY. 



i. Papaver radicatum Rottb. (P. alpinum and P. nudicaulc A. Gray; not 

 L.) In arctic regions and on alpine mountain tops from Greenl. and Lab. to 

 Alaska and in Colo. ; also in Europe. Alt. 13.000-14,000 ft. Gray's Peak. 



2. ARGEMONE L. PRICKLY POPPY. 



Corolla yellow. i. A. mexicana. 



Corolla white. 



Stem unarmed or prickly, but not hispid pubescent. 2. A. intermedia. 



Stem hispid pubescent as well as spiny; leaf-blades deeply and usually doubly 

 lobed. 3. A. hispida. 



