GOOSEBERRY FAMILY 395 



Sepals white; filaments more than twice as long as the petals; style pubescent below. 

 Filaments and anthers glabrous ; ribs of the leaves distinct to the base. 



1. G. missouriensis. 

 Filaments and usually also the anthers hairy; ribs of the leaves united at the base 



on the lower surface. 2. G. nivea. 



Sepals mostly green or purplish; filaments not more than twice as long as the petals. 

 Tube of the hypanthium externally glabrous; styles hairy towards the base 

 Hj-panthium-tube cylindric, usually longer than the sepals. 3. G. setosa. 

 Hypanthium-tube campanulate or turbinate, not longer than the sepals. 

 Stamens equalling the petals. 



Peduncles well exserted from the bud-scales; hypanthium and sepals to- 

 gether 8-10 mm. long. 4. G. irrigua. 

 Peduncles and pedicels together scarcely longer than the bud-scales ; hypan- 

 thium and calyx together 5-7 mm. long. 5. G. oxyacanthoides. 

 Stamens about twice as long as the petals. 



Peduncles glabrous; bracts glabrous. 6. G. inermis. 



Peduncles puberulent and often glandular ; bracts pubescent and glandular- 



ciliate. 7. G. Purpusi. 



Tube of the hypanthium pubescent; styles wholly glabrous; stamens about equalling 



the petals. 

 Length of the flowers 8 mm. or more; tube of the hypanthium cylindric, not shorter 



than the sepals. 8. G. leptantha. 



Length of the flower 7 mm. or less; tube of the hypanthium campanulate, shorter 

 than the sepals. 9. G. velutina. 



1. G. missouriensis (Nutt.) Cov. & Britt. A shrub 1-2 m. high, with 

 glabrous branches; spines reddish brown, 1-2 cm. long, straight; leaf -blades 2-6 

 cm. broad, thin, sparingly pubescent or glabrous above, densely pubescent be- 

 neath; peduncles slender, longer than the petioles; hypanthium cylindric, pubes- 

 cent, about 2.5 mm. long, greenish; sepals linear, 2-3 times as long as the hypan- 

 thium, greenish white; petals much shorter than the sepals, erose; berry purple 

 or brownish, about 1 cm. in diameter. Ribes missouriense Nutt. River banks: 

 111 Tenn. Kans. S.D. Plain. Ap-Je. 



2. G. nivea (Lindl.) Spach. A shrub 1-3 m. high ; branches glabrous, reddish 

 or brown; spines 1-3, stout, brown, 1-2 cm. long; leaves sparingly pubescent or 

 glabrate; peduncles nodding, shorter than the leaves; hypanthium campanulate, 

 white, about 2 mm. long; sepals white, narrowly lanceolate, 6-8 mm. long; petals 

 white, cuneate, erose; berry glabrous, bluish black, about 8 mm. thick. R. niveum 

 Lindl. River banks: Wash. Ida. Nev. Ore. Son. <Submont. Ap-My. 



3. G. setosa (Lindl.) Cov. & Britt. A shrub, usually less than 1 m. high, 

 with bristly branches; spines subulate, usually less than 1 cm. long; leaf -blades 

 thin, cordate or truncate at the base, 1-4 cm. wide, finely pubescent; peduncles 

 shorter than the leaves; hypanthium-tube 5-8 mm. long, about twice as long as 

 the white sepals; petals one-half to two-thirds as long as the sepals and as long 

 as the stamens: berry red to black, somewhat bristly or smooth, 8-12 mm. in 

 diameter. R. setosum Lindl. R. saximontanum E. Nels. Plains and hills: 

 Sask. -Neb. Colo. Ida. Alta. Plain. -Subm.ont. Ap-Je. 



4. G. irrigua (Dougl.) Cov. & Britt. A shrub 1-3 m. high; young shoots 

 usually pubescent; spines subulate, about 1 cm. long; leaf-blades thin, 3-7 cm. 

 wide, glabrous or nearly so above, pubescent and minutely glandular beneath; 

 peduncles nodding, shorter than the leaves; hypanthium greenish, glabrous, 3-4 

 mm. long; sepals greenish white, 5-8 mm. long; petals oboyate, white, about half 

 as long as the sepals; berry smooth, globose, 7-13 mm. in diameter. R. irriguum 

 Dougl. Mountains: B.C. Mont. Ida. -Ore. Submont. My-Je. 



6. G. oxyacanthoides (L.) Mill. A low shrub, less than 1 m. high, usually 

 very bristly; spines subulate, rather strong, 1 cm. long or less; leaf -blades 2-4 cm. 

 broad, cordate or broadly cuneate at base, more or less pubescent, somewhat 

 glandular; pedicels also very short; hypanthium greenish white, glabrous; sepals 

 white, glabrous, 2.5-4 mm. long, a little longer than the hypanthium; petals 

 obovate, two-thirds as long as the sepals; berry smooth, about 1 cm. in diameter. 

 R. oxyacanthoides L. Copses: Hudson Bay Mich. Mont. B.C. Yukon. 

 Boreal Submont. My-Je. 



6. G. inermis (Rydb.) Cov. & Britt. Shrub with glabrous stem; nodal 

 spines few, 1 cm. long or less, or none; leaves truncate or cordate at the base, 

 glabrous or somewhat puberulent and glandular; peduncles exserted but short, 



