SAXIFRAGA SIERRAS (COVille).
intesrfolia Sienne Coville, Proc. Biol. Soc. Wash. 7 : 78. 1892.
Sa.rifraga Oregana Howell, Erythea, 3 : 34. 1895.
As Mr. Howell points out, Saxifraga has been a composite specks. Mr. Coville dwells on the differences in the leaves of Saxifmga Siellne and S. integnfolia ; these differences are much more marked in specimens collected later by Mr. Howell, in Oregon. But in addition to these leaf-characters, the flower furnishes good points of distinction.
The calyx-segments in Sa.rifroga Skim c are suborbicular and broader than long (except in Mr. Howell's specimens, where the whole vegetative and floral systems are abnormally elongated), the calyx-segments in S. int,:crifolia are ovate and longer than broad ; the petals are ovate or broadly oblong and retuse at the apex, as opposed to the obovate petals of S. int6;;Trifolia with their rounded apices.