60 RYDBERG: Rocky MOouNTAIN FLORA 
Nearest related to S. grossulariaefolia but the leaf-blades are 
rhombic in outline and cleft only half way down, and the terminal 
lobe is decidedly acute. On account of the leaf-form it may be 
mistaken for S. Munroana, but the flowers are smaller, the leaves 
more deeply divided, the fruit is smaller, the carpels less reniform, 
and the seed without filiform attachment. 
Utan: Wahsatch County, near Midway, July 6, 1905, Carlton & 
Garrett 6691 (type, in herb.“N. Y. Bot. Gard.); Fish Lake, around 
Twin Creeks, Aug. 8, 1905, Rydberg & Carlton 7627. 
There is a group of plants in Sphaeralcea, however, which 
differs from the rest not only in habit but also in the character of 
the fruit. The carpels are not, as in the typical Sphaeralcea, 
divided into a lower portion, reticulate on the faces and enclosing 
the seeds, and an upper smooth and empty portion; the whole 
carpel is in this group smooth and hirsute. Dr. Greene* took out 
this group and made a new genus under the name of Jiliamna. I 
think that this was unnecessary, for the plants are evidently 
cogeneric with the West Indian Phymosia, usually also merged 
in Sphaeralcea. If the two genera should be merged, the name 
for the genus would be Phymosia, for it is the older of the 
two. The species to be renamed under Phymosia are the following: 
Phymosia acerifolia (Nutt.) Rydb. 
Splaieicen acertfolia Nutt.; T. & G. Fl. N. Am. 1: 228. 1838. 
Illamna acerifolia Greene, Leaflets 1: 206. 1906. 
Phymosia rivularis (Dougl.) Rydb. 
Malva rivularis Doug!l.; Hook. Fl. Bor.-Am. 1: 
107. 1831. 
Sphaeralcea rivularis Torr. in Gray, Mem. Am. Acad. 4: 23. 1849. 
Illiamna rivularis Greene, Leaflets 1: 206. 1906. 
Phymosia grandiflora Rydb. 
Sphaeralcea grandiflora Rydb. Bull. Torrey Club 31: 565. 1904. 
Illiamna ane Greene, Leaflets 1: 206. 1906. ae 
Phymosia Crandallii Rydb. 
Sphaeralcea Crandallu Rydb. Bull. Torrey Club 31: 564 1904. 
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* Leaflets 1: 205-207. 1906. 
