24 Mibes Aureimi and Mibes Lentum. 



lobes incurved toward the apex, and obtuse-angled; the racemes 

 are commonly 10 to 15-flowered, and the ordinarily odorless 

 flowers are about 1 1 mm. in length, from the base of the ovary 

 to the apex of the petals, when dry. In the other plant, which 

 is a native of the Missouri River region, the leaves on vigorous 

 shoots have lobes with straight margins and the apex acute- 

 angled, the racemes have commonly 2 to 8 flowers with the 

 spicy odor of the carnation, and the corresponding measurement 

 in the dried flower is about 16 mm. The facts brought out 

 in the present paper show that the name Mibes aureti7n Pursh 

 must be restricted to the Columbia plant, which ordinarily has 

 passed under the name Hibes tenuiflorum Lindl. and that the 

 Missouri plant, which is frequently cultivated in old gardens 

 and which commonly passes under the name Mibes aurewm 

 must be called Mibes longiflorum Nutt. 



Turning to the original description of aureum* we find the 

 following citation of types. "On the banks of the rivers Mis- 

 souri and Columbia. M. Lewis [sign for woody plant] April. 

 V. s. in Herb. Lexois; v. v. in Hort." By referring to Mr. 

 Thomas Meehan's paper on the plants of the Lewis and Clark 

 Expedition,! to Dr. Elliott Coues' notes on Mr. Meehan's 

 paper, J and to Dr. Coues' edition of the History of the Lewis 

 and Clark Expedition, four volumes, 1893, it appears that of 

 the two specimens in Lewis' herbarium, now on deposit in the 

 herbarium of the Academy of Sciences, Philadelphia, one was 

 collected on the site of the present town of .The Dalles, in Ore- 

 gon, April 16, 1806, the other on the Missouri River, in Mon- 

 tana, at the junction of the Jefferson, Madison, and Gallatin 

 rivers, July 29, 1805. The cultivated plant indicated by 

 Pursh's "u. V. in Hort.'''', there is good evidence, is the com- 

 mon cultivated large-flowered sweet-scented plant above re- 

 ferred to. Whatever the Montana plant might prove to be, it 

 is certain that the Oregon specimen is the Columbia form, and 

 the cultivated plant being the Missouri form, Pursh's Mibes 

 aureum is, therefore, a complex of the two. 



Lindley in 1830§ distinguished the two forms, and named the 



*Pursh, Fl. Am. Sept. 1: 164. 1814. 



fMeehan, Proc. Acad. Nat. Sci. Phila. 1898:12-49. 1898. 

 iCoues, Proc. Acad. Nat. Sci. Phila. 1898: 291-315. 1898. 

 §Lindl. Trans. Hort. Soc. Lend. 7:242. 1830. 



