Key to Asarum

View taxon page for Asarum

(For a list of species in Asarum, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaf 

blade 

Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.

generally ± white along major veins; rhizomes deep, ± vertical; plants clumped; stamen tip > pollen sacs

2. Calyx tube white inside with red stripes covered with white hairs; 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

 margin hairs curved toward leaf tip; stamen tips pale ..... A. hartwegii

2' Calyx tube dark red-maroon inside with scattered dark hairs; leaf margin hairs ± erect-spreading; stamen tips dark ..... A. marmoratum

1' Leaf blade all green; rhizomes near soil surface, horizontal; plants generally 

spreading 

Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal.

; stamen tip < pollen sacs

3. Calyx 

lobes 

1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth.

spreading in flower, long-tapered ..... A. caudatum

3' Calyx lobes strongly 

reflexed 

Abruptly bent or curved downward or backward.

in flower, 

obtuse 

Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle.

to 

acute 

Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle.

or abruptly pointed ..... A. lemmonii

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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