Taraxacum trigonolobum

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[[leaf count::10]| ]]

Taraxacum trigonolobum is known only from the Aleutian Islands and islands of the Bering Sea, on the American side. It is probably the taxonomically weakest entity that I am recognizing in this complex, but its distribution and leaf morphology, among other attributes, are distinctive enough for recognition at the present time.

apex architecture or courseirregular +
apex external texturecoarse +
apex shapeacuminate +, caudate + and horned +
base shapecuneate + and attenuate +
beak sizeslender +
blade shapeoblanceolate-obovate +, oblanceolate + and runcinate +
body shapeoblanceoloid +
bractlet shapeovate + and elliptic-ovate +
calyculus colorationgreen +
calyculus orientationappressed + and to spreading +
center colorationdark +
cone shapeconic +
corolla colorationyellow + and striped +
corolla positionouter +
cypsela colorationbrown +
face architecture or external texture or reliefsmooth +
face external textureglabrous +, glabrate + and pilose +
face relieftuberculate + and muricate +
flowering timesummer +
habitatherbaceous vegetation +, lakeshores +, moist banks +, alluvial shores +, moist meadows +, moist heaths + and grassy cliff tops +
habitat inclinesloped +
habitat moisturewet +
involucre colorationgreen +
involucre external textureglaucous +
involucre shapecampanulate +
leaf orientationhorizontal +, patent + and erect +
lobe coursestraight +
lobe orientationretrorse + and antrorse +
lobe positiondistal +
lobe shapetriangular +, deltate + and acuminate +
margin architecture or shapeciliate +
margin colorationwhite +
margin external texturescarious +
margin positionouter +
margin shapelobed +, , + and toothed +
margin widthwider +
pappus colorationyellowish +, cream + and white +
petiole architecturewinged +
phyllary shapelanceolate +
rib prominenceprominent +
rib widthfine +
series count2 +
stem colorationpurplish +
stem external textureglabrous +, glabrescent + and villous +
stem orientationascending + and erect +
taproot architecturebranched +
tip colorationpurplish +
tip external texturedark-scarious + and scarious +
tip relieferose +
tooth other or positionproximal +
tooth shaperounded +, truncate +, obtuse +, acute + and apiculate +
whole organism count56.5 +
whole organism life styleplant +