GROSSUL AKI ACE AE 511 



B. Calyx-lobes shorter than the limb : berry prickly. 5. R. Cynosbati. 

 Plants unarmed: racemes many-flowered, or more than 3-flowered. (Currantt.) 

 Sepals distinct to the top of the ovary. 



Foliage viscid with glandular-pubescence : bracts longer than the pedicels. 6. R. resinosum. 



Inflorescence only glandular- pubescent : bracts shorter than the pedicels. 7. It. prostratum. 



Sepals united for at least 1 cm. 8. It. aureum. 



1. Ribes curv^tum Small. A diffusely branched glabrate shrub, 5-8 dm. tall, armed 

 with subulate spines 4-6 mm. long, the stem with a loose exfoliating bark, the branches 

 purplish, the recurved or drooping branchlets reddish. Leaf-blades suborbicular, 1-2 cm. 

 in diameter, 3-lobed, the lobes toothed, the terminal lobe often mucronate ; petioles slender, 

 as long as the blade or shorter, usually somewhat villous : peduncles 7-8 mm. long, mostly 

 1 -flowered : pedicels twisted, nearly as long as the peduncles, subtended by two 3-lobed 

 ciliate bractlets : hypanthium glandular-pubescent : sepals linear or linear-spatulate, 6 mm. 

 long, whitish, reflexed and recurved, the edges hyaline, obtuse : petals lanceolate, 1.5 mm. 

 long, white, obtuse with lateral teeth and one or two nerves : stamens conspicuous, 7 mm. 

 long, erect : filaments villous : berry globose, 6-8 mm. in diameter, crowned by the per- 

 sistent stamens. 



In dry or stony soil, Georgia and Alabama. 



2. Ribes gracile Michx. A rather rigid shrub, 1-1.5 m. tall, armed with slender 

 spines, the shoots sometimes densely clothed with prickles, the bark reddish or purplish. 

 Leaf-blades 2-4 cm. broad (often larger on the "shoots), more or less pubescent, 3-5-lobed, 

 the lobes rounded, toothed, the teeth obtuse or rarely acute ; petioles villous, shorter 

 than the blades : peduncles usually 3-flowered, about as long as the pedicels : bracts ovate, 

 glandular-ciliate : hypanthium glabrous : sepals linear-spatulate, 2-3 times longer than 

 the hypanthium : petals obovate or spatulate, about 2 mm. long : filaments pubescent : 

 style exserted : berries globose, 1-1.5 cm. in diameter. 



In dry or rocky soil, Illinois to Kansas, Tennessee, Louisiana and Texas. 



3. Ribes rottmdifolium Michx. A straggling shrub, 1-2 m. tall, clothed with a red- 

 dish or purple bark, the -spines 5-10 mm. long, the young shoots without prickles. Leaf- 

 blades 2-3.5 cm. in diameter, glabrate or finely pubescent, especially on the nerves be- 

 neath, 3-5-lobed, toothed ; petioles slender, more or less villous, much shorter than the 

 blades : peduncles mostly 1-2-flowered, longer than the pedicels : hypanthium glabrous : 

 sepals linear-spatulate, obtuse : petals cuneate, 1.5-2 mm. long, undulate, at length 

 crisped : filaments glabrous : berries globose, 8-10 mm. in diameter, reddish purple. 



In rocky woods, on or near the mountains, Massachusetts to New York and North Carolina. 



4. Ribes Missouriense Nutt. A spreading shrub, with short branches clothed 

 with a gray shreddy bark, the spines stout, 8-15 mm. long, young shoots with numerous 

 prickles. Leaf-blades 2-6 cm. in diameter, more or less pubescent, especially when young ; 

 petioles stout, usually shorter than the blades : hypanthium glabrous : sepals narrowly ob- 

 long or oblong-spatulate : petals cuneate, 2-2.5 mm. long : filaments glabrous : berries 

 10-15 mm. in diameter, purple. 



In thickets and on river banks, Pennsylvania to Minnesota, South Dakota, Kansas and Tennessee. 



5. Ribes Cyndsbati L. A straggling shrub, 1-2 m. tall, with spine-armed and often 

 prickly stems. Leaf-blades 3-5 cm. in diameter, pubescent when young, mostly glabrate 

 in age, 3-5-lobed, the lobes rounded or the terminal one acute, crenate ; petioles somewhat 

 shorter than the blades, villous with simple or glandular hairs : peduncles and pedicels of 

 about the same length : bracts suborbicular, glandular-toothed : hypanthium glabrous : 

 sepals oblong, 'obtuse : petals minute, reniform, about 0.5mm. high: filaments subulate, 

 about J as long as the anthers : berries globose, about 1-1. 5 cm. in diameter, armed with 

 stout prickles. 



In rocky woods and on hillsides, New Brunswick to Manitoba, Alabama and Missouri. DOGBERRY. 



6. Ribes resinosum Pursh. A shrub about 1 m. tall, with clammy glandular-pube- 

 scent foliage and inflorescence. Leaf-blades thickish, 3-5-lobed, cordate at the base, the lobes 

 rounded or obtuse, crenate toothed ; petioles stout, shorter than the blades, furnished with 

 broad stipules which are early deciduous : racemes ascending, many-flowered : bracts ob- 

 long : flowers short-pediceled. 



In woods, southern Alleghenies, probably in North Carolina. Not recently collected. 



7. Ribes prostratum L'Her. A low shrub, with spreading decumbent stems, the 

 inflorescence glandular-pubescent. Leaf-blades 5-12 crn. broad, sparingly pubescent when 

 young, finally glabrate, ciliate, dark green above, paler beneath, cordate, angularly 5- 

 lobed, the lobes acute, serrate or serrate-crenate ; petioles finely pubescent, often about as 

 long as the blades, the dilated stipules fringed : racemes 6-14 cm. long, spreading, long- 

 peduncled : pedicels 5-10 mm. long, subtended by ovate bracts 1-1.5 mm. long : hypan- 

 thium bristly and densely glandular-pubescent : sepals rhomboidal-obovate, sometimes 



