PLATANACEAE 511 



3. Grossularia rotundifolia (Michx.) Coville & Britton. A straggling shrub, 

 1-2 m. tall, clothed with a reddish, brownish or purple bark, the spines 5-10 mm. long, 

 the young shoots without prickles. Leaf-blades 2-5 cm. in diameter, glabrate or 

 finely pubescent, especially on the nerves beneath, 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 or linear-spatulate, 

 obtuse: petals flabellate, 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. Grossularia MIssourie'nsis (Nutt.) Coville & Britton. A spreading shrub, 

 with short branches clothed with a gray or buff shreddy bark, the spines stout, 8-20 

 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 oblong or oblong-spatulate or nar- 

 rower: petals cuneate, 2-2.5 mm. long: filaments glabrous: berries 9-15 mm. in 

 diameter, purple or brown. 



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



5. Grossularia Cyndsbati (L.) Mill. A straggling shrub, 1-2 m. tall, with 

 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 

 0.5 mm. high: filaments subulate, about \ 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. ^ 



2. RISES L. 1 



Shrubs without nodal spines. Kacemes several-many-flowered. Hypanthium 

 minute. Flower-stalk jointed beneath the ovary, bearing a pair of bractlets. Berry 

 disarticulating from the pedicel. Spring. CURRANT. 



Berry and hypanthium glandular-pubescent, the latter slightly prolonged beyond the ovary: stamens 

 longer than the petals: styles and stigmas distinct. 1. ^R- glandulosum. 



Berry and hypanthium glabrous, the latter much prolonged beyond the ovary: 



stamens shorter than the petals: styles and stigmas united. 2. R. odoratum. 



1. Ribes glandulosum Grauer. A low shrub, with spreading decumbent stems, 

 the inflorescence glandular-pubescent. Leaf-blades 5-12 cm. broad, sparingly pubes- 

 cent when young, finally glabrate, ciliate, dark green above, paler beneath, cordate, 

 angularly 5-lobed, the lobes acute, serrate or serrate-crenate ; petioles finely pubes- 

 cent, 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: hypanthium bristly and densely glandular pubescent: sepals 

 rhomboidal-obovate, sometimes constricted at the middle, about 3 mm. long, spread- 

 ing: petals cuneate, about 1 mm. long: stamens shorter than the sepals: berries 

 globose, 5-8 mm. in diameter. [B. prostratum L'Her.] 



In deep woods, common on the mountains, Labrador to Saskatchewan, south to North 

 Carolina, Michigan and Colorado. FETID CURRANT. 



2. Ribes odoratum Wendl. A glabrous or glabrate shrub, 1-4 m. tall, with 

 bright green or glaucous foliage. Leaf -blades firm, 2-6 cm. broad, 3-5-lobed, rounded, 

 truncate or rarely subcordate at the base, the lobes slightly toothed near the apex; 

 petioles glabrous or puberulent, shorter than the blades: racemes 1-5 cm. long, 



1 Ribes resinosum Pursh, described in the first edition from specimens supposed 

 to have been collected in the mountains of North Carolina by Eraser, seems to be 

 Ttibes orientate Desf., of Asia. 



