|Scientific Name||Geranium dissectum L.|
|Common Names||English: Cutleaf geranium, cut-leaved cranesbill, German: Schlitzblättriger Storchschnabel, French: Géranium découpé|
|Description||Annual, mostly summer annual seed-propagated weed with shallow, thin taproot.|
Deeply clefted leaves, almost circular, flower deep pink to purplish.
Basal leaves long-petiolate, very broad, nearly reniform, somewhat asymmetrical, haired, flattened in front, slightly retracted.
Erect, ascending, or climbing, covered with backward-pointing, projecting hairs, 10-30 cm (3.93 - 11.81 inch) high.
Petiolate, nearly circular in outline, deeply divided (palmatifid) with seven to nine lobes, rough hair on both surfaces, with pointy tips.
Veins impressed above, expressed below.
Apex of the lowest leaves often rounded to subacute, those of the upper leaves acute, carpels becoming black in fruit.
Red violet, inflorescences and fruit valves glandularly haired, petals shorter than calyx, filaments compressed and expanded at the base, ciliate, pink apically.
Late spring - autumn.
5-segmented beaklike fruit. Body 2-3 mm (0.078 - 0.118 inch), minutely bristly.
Style column 12-15 mm (0.47 - 0.59 inch).
Beak 2-3 mm ( (0.078 - 0.118 inch).
Seeds are deeply pitted, gray-brown. Germination occurs all year round but usually in spring.
Viability of Seeds
40-150 seeds/plant are dispersed.
Arable fields, lawns, grassy open ground, roadsides.
G. dissectum grows on all soils, but prefers friable, nutrient-rich, loamy, not too chalky soils.
Geranium dissectum often occurs in small spring annual grains and corn in medium to high densities. The individual plants have low competitive ability. Reduced tillage practices and insufficient efficacy of herbicides (mainly in oil seed rape) favor this weed.
Useful non-chemical contribution to Integrated Weed Management
Ploughing suppresses Geranium dissectum.
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