in 1928 in the journal Rhodora. The variety is distinguished by having larger leaflets that are cleft (having a deep division) for more than half their lengths and the seed heads having shorter styles, 15–40 mm instead of 15–70 mm. The PLANTS database records it as growing from British Columbia to northern California and from the mountains of New Mexico to Saskatchewan. It is recorded by them as growing in both Colorado and Montana without county level distributions. This variety is accepted by WFO, PLANTS, POWO, and FNA. Geum triflorum f. ornatum was published by Fassett at the same time as G. triflorum var. ciliatum in Rhodora. It is not accepted as a form of G. triflorum by most authorities, including WFO, PLANTS, POWO, and FNA. Distribution G. triflorum is widely distributed in North America, but only common in the Upper Midwest and mountainous west. In Canada, it is common from British Columbia to Manitoba. It also grows in parts of the Yukon Territory and Northwest Territory. It is a common prairie species in Minnesota, Wisconsin, and North Dakota. Contiguous with this it is reported in nine of the north-eastern counties in Illinois and eight counties in north-eastern South Dakota. It is recorded in PLANTS as growing in Iowa without a specific location. It is common throughout the prairies of Montana and Wyoming and into the mountains of Idaho, Colorado, Utah, and Nevada. It is present in the adjoining Black Hills in South Dakota, the eastern portions of Washington state, Oregon, and the north east mountainous portion of California. Populations are also found in the mountains of northern New Mexico and Arizona. In the eastern United States and Ontario populations are much rarer and isolated. It grows in six counties of the lower peninsula of Michigan and just Chippewa County in the upper peninsula. In New York state it is only recorded in PLANTS as growing in Jefferson County and Oswego County, which are adjacent to Lake Ontario. The New York Flora Atlas only records vouchered specimens from Jefferson County, NY. Habitat G. triflorum grows in open, non-forested habitat with well drained soils. This includes meadows in montane forests, prairies of the upper Midwest, and alvars in Michigan, New York, Ontario, and Manitoba. Plants are tolerant of clay soils when slopes provide drainage, but intolerant of being waterlogged, particularly in winter. They require good moisture for new plants to establish