Geum aleppicum
 
Yellow Avens

4th Lowest Stem Leaf Bottom

Moose Mountain Provincial Park
10-July-2009

This species is somewhat similar to G. macrophyllum.  The differences are included in the answers to the keys to the species listed below.  In addition, A Flora Of Northeastern Minnesota states that the sepals are 5-9 mm long in G. aleppicum but are only 2.5-5 mm long in G. macrophyllum.

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Aleppicum: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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cauline leaves several; NOT [leaves mostly basal, cauline leaves few (2)]

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cauline leaves alternate; NOT [cauline leaves opposite]

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leaves lyrately pinnate; NOT [leaves pinnate]

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terminal segment of basal leaves cuneate at base; NOT [terminal segment of basal leaves cordate or rounded at base]

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terminal segment of basal leaves deeply incised; NOT [terminal segment of basal leaves 3-lobed]

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flowers erect; NOT [flowers nodding]

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sepals reflexed; NOT [sepals erect or spreading]

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sepals 3-8 mm long; NOT [sepals 7-10 mm long]

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petals yellow; NOT [petals purplish, flesh-colored, or purple-veined]

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style jointed

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upper portion of style less than one-third the length of lower part; NOT [upper part of style at least half as long as lower part]

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style NOT glandular; NOT [style glandular-pubescent, at least below]

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upper portion of style hairy; NOT [upper portion of style not hairy, or with only a few stiff hairs]

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style hooked in fruit

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style NOT plumose in fruit

 

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Geum: Answers to key questions in Budd's Flora  and Flora of Alberta leading to this genus. 
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herbs, or with a woody base and otherwise herbaceous; NOT [shrubs or trees]

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leaves compound; NOT [leaves simple, usually toothed], NOT [leaves much dissected into linear lobes]

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basal leaves with more than 3 leaflets; NOT [basal leaves with 3 leaflets]

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hypanthium LACKING hooked bristles

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calyx double, with 2 rings of lobes, the outer ones smaller than the inner; NOT [calyx simple, of 5 lobes]

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petals usually longer than the sepals; NOT [petals small, little if any longer than the sepals]

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stamens 10-many; NOT [stamens 5]

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carpels 10-many; NOT [carpels 2], NOT [carpels 5-20]

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style not articulated at base or deciduous but persisting in the fruit; NOT [style articulated at base and deciduous from the achenes]

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style much longer than the achene; NOT [style much shorter than the achene]

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style often with an abrupt bend or joint near the middle

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style hooked or plumose in fruit

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carpels becoming achenes (sometimes on a fleshy receptacle); NOT [carpels becoming drupelets (raspberry-like)]

 

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Rosaceae: Answers to key questions in Budd's Flora  leading to this family. 
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herbs; NOT [shrubs or trees]

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plants terrestrial or semiaquatic; NOT [plants aquatic, leaves submerged or floating]

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plants NOT with colored milky juice

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flower with more than one normal leaf

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some or all leaves alternate; NOT [leaves opposite, whorled, or basal]

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leaves with stipules; NOT [leaves without stipules, or having glands]

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flowers with two floral rings, and with each petal distinct from the others

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calyx regular; NOT [calyx irregular, some sepals smaller than others]

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flowers regular in shape; NOT [flowers irregular in shape]

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stamens usually numerous; NOT [stamens 5 or 10]

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stamens usually separate or partly so, not in  column; NOT [stamens numerous, united into a column]

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ovary of one or more carpels, either separate or enclosed by a fleshy receptacle; NOT [ovary of 5 united carpels]