Part 3, 1908] ROSACEAE 243 
obtuse or acute at the apex, obtuse, truncate or subcordate at the base, glabrous or nearly so 
above, usually sparingly hairy beneath ; inflorescence dense, but the flowers less numerous 
than in the preceding ; bracts linear-oblanceolate, caducous ; pedicels 1-1.5 cm. long, stellate- 
pubescent ; hypanthium 3-4 mm. wide, stellate ; sepals ovate, acute, densely stellate on both 
sides; petals broadly obovate, about 4mm. long; carpels usually 3 or 4, permanently stel- 
late, inflated, united at the base, rounded-ellipsoid, abruptly acuminate, 7-8 mm. long; 
seed pear-shaped, only slightly oblique, a little less than 2 mm. long; caruncle small, near 
the end. 
TYPE LOCALITY: Not given in the original publication, but the type was collected on French 
Creek, 10 miles below Custer, Black Hills, South Dakota, P. A. Rydberg. 
DISTRIBUTION : Creek banks and hillsides from western New York to Missouri, Colorado, and 
the Black Hills of South Dakota. 
6. Opulaster alabamensis Rydberg, sp. nov. 
Opulaster intermedius Small, Fl. SE. U. S. 513, in part. 1903. 
Ashrub, 1-2 m. high; branches more or less stellate when young; petioles 1-2 cm. long; 
leaf-blades of the flowering branches rounded-ovate, 2-5 cm. long, often indistinctly 3-lobed, 
doubly crenate, obtuse or acute at the apex, acute to rounded at the base, sparingly hairy 
or glabrous above, more stellate-pubescent beneath ; blades of the sterile shoots more deeply 
lobed; the terminal lobe elongate and often acuminate ; hypanthium nearly 4 mm. wide, 
densely stellate ; sepals ovate-acute, densely stellate on both sides; petals orbicular, a little 
over 3 mm. long; carpels 3-5, about 8 mm. long, rounded-ellipsoid, abruptly acute, per- 
manently stellate; seeds pear-shaped, over 1.5 mm. long; caruncle rather long. 
Type collected at Auburn, Lee County, Alabama, June 5, 1897, &. S. Earle & C. F. Bazer. 
DISTRIBUTION: Alabama and South Carolina. 
7. Opulaster stellatus Rydb.; Small, Fl. SE. U.S. 513. 1903. 
Spiraea opulifolia ferruginea Nutt.; T. & G. Fl. N. Am. 1: 414. 1840. 
Netllia opulifolia ferruginea S. Wats. Bibl. Ind. 1: 290. 1878. 
Physocarpus ferrugineus Daniels, Univ. Missouri Stud. Sci. 1: 291.* 1907. 
A low branched shrub; branches densely stellate-pubescent; petioles 1 cm. or less long; 
leaf-blades ovate to orbicular in outline, 1-4 cm. long, shallowly 3-lobed, rounded, obtuse or 
acutish at the apex, obtuse or rounded at the base, copiously stellate, especially beneath ; 
inflorescence rather small; pedicels 1-1.5 cm. long, stellate; hypanthium about 3 mm. 
wide; sepals ovate, acute, densely stellate on both sides; follicles mostly 4, about 6 mm. 
long, rounded-ellipsoid, abruptly acute, permanently stellate; seeds pear-shaped, nearly 2 
mm. long. 
TYPE LOCALITY: Georgia. : 
DISTRIBUTION: Florida and Georgia. 
8. Opulaster bracteatus Rydb. Bull. Torrey Club 31: 558. 1904. 
Opulaster Ramaleyi A, Nels. (Bot. Gaz. 34: 367, in part. 1902); Rydb. Fl. Colo. 179. 1906. 
A shrub, 1-2 m. high; branches yellowish-green, glabrous; stipules linear-lanceolate, 
about 5 mm. long, pubescent; petioles 1-3 cm. long; leaf-blades 2-7 cm. long, broadly 
ovate or subcordate in outline, more or less deeply 3-lobed, doubly crenate, obtuse or acute 
at the apex, rounded, truncate or subcordate at the base, glabrous or nearly so, somewhat 
paler beneath; corymb many-flowered; bracts obovate or spatulate, often foliaceous and 
more of less persistent, pubescent; pedicels 1-2 cm. long, softly stellate; hypanthium 
about 4 mm. wide, densely stellate; sepals ovate, acute, densely stellate on both sides, 
about 3 mm. long; petals white, rounded-ovate, 4-5 mm. long; carpels 2, or rarely 3, 
densely stellate, united at least half their length ; styles ascending. 
TYPE LOCALITY: New Windsor, Colorado. 
DISTRIBUTION : Mountains of Colorado. 
9. Opulaster glabratus Rydb. Bull. Torrey Club 31: 559. 1904. 
A shrub, about 1m. high; branches yellowish or reddish, glabrous; petioles 1-2 cm. 
long ; leaf-blades rounded-ovate, orbicular, or sometimes slightly reniform, 2~3 cm. long, 
