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FNA | Family List | FNA Vol. 9 | Rosaceae | Geum

10a. Geum macrophyllum Willdenow var. macrophyllum

Cauline leaves: proximal strongly lyrate-pinnate, distal simple and 3-lobed (divided less than 3/4 to base), lobes rhombic-oblong. Pedicels densely puberulent with scattered longer hairs, eglandular. 2n = 42.

Flowering late spring–summer. Wet meadows, stream banks, thickets, moist woods, clearings, coastal terraces, forest edges, roadsides; 0–1500 m; St. Pierre and Miquelon; B.C., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que.; Alaska, Calif., Idaho, Maine, Mass., Mich., Mont., Nebr., N.H., N.Y., N.Dak., Oreg., Vt., Wash., Wis.; Eurasia.

Alaskan specimens of var. macrophyllum often have relatively few stalked glands on the styles and some appear almost glandless.

Variety macrophyllum hybridizes with Geum rivale (= G. ×pulchrum Fernald); see discussion under 8. G. rivale.


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