Aristolochia

Contains 8 accepted taxa overall.

Characteristics
Aristolochia L.
DUTCHMAN'S-PIPE
Classification
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PIPERALES
Aristolochia
Citation
ARISTOLOCHIA Linnaeus, Sp. Pl. 960. 1753.
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TYPE: Aristolochia rotunda Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 1: 645. 1913.
Species
Scientific Name Common Name Status Photos
Aristolochia elegans ELEGANT DUTCHMAN'S-PIPE; CALICO FLOWER Not Native Y
Aristolochia fimbriata WHITE VEINED HARDY DUTCHMAN'S PIPE; WHITE VEINED PIPEVINE Not Native
Aristolochia labiata MOTTLED DUTCHMAN'S-PIPE Not Native
Aristolochia maxima DUTCHMAN'S-PIPE Not Native
Aristolochia pentandra MARSH'S DUTCHMAN'S-PIPE Native Endangered-State
Aristolochia ringens GAPING DUTCHMAN'S-PIPE Not Native
Aristolochia serpentaria VIRGINIA SNAKEROOT Native FACU (NWPL)
Aristolochia tomentosa WOOLLY DUTCHMAN'S-PIPE; PIPEVINE Native Endangered-State FAC (NWPL)
[Family identification key]
1.  Erect to decumbent herb; inflorescence at the plant base, below the leaves
1.  Prostrate to climbing vine; inflorescence not at the plant base
2
2.  Leaf blade oblong to spatulate; inflorescence of several flowers
2.  Leaf blade cordate-ovate to cordate-reniform; flowers solitary
3
3.  Stem tomentose; leaf blade underside tomentose with prominent primary veins and conspicuous fine reticulate venation
3.  Stem glabrous to puberulent; leaf blade underside glabrous to puberulent with flat to scarcely prominent primary veins and obscure to conspicuous coarse reticulate venation
4
4.  Pseudostipules absent; leaf blades usually broadly lobed at the base, the inner pair of primary basal veins straight or nearly so (with side branches); calyx tube dilated at base (the calyx is the prominent floral tissue; the corolla is absent); calyx limb expanded on only 1 side; stamens 5
4.  Pseudostipules present or absent; leaf blades unlobed or scarcely lobed at the base, the inner pair of primary basal veins mostly sinuous, bent, or bifurcating; calyx tube dilated near the middle (the calyx is the prominent floral tissue; the corolla is absent); calyx limb expanded on all sides; stamens 6
5
5.  Fresh leaf blade upperside with white veins, surfaces bordering the veins sometimes also white; calyx with prominent fimbriate projections on the margin
5.  Fresh leaf blade upperside with green or whitish veins; calyx without fimbria
6
6.  Leaf blades generally triangular in the distal half, the basal sinus at a broad to nearly right angle to the midrib; calyx limb 1-lobed
6.  Leaf blades generally rounded, the basal sinus at a narrow angle to nearly parallel with the midrib; calyx limb 2-lobed
7
7.  Upper calyx lobe suborbicular, narrowly clawed, pendent, deflected, ruffled
7.  Upper calyx lobe ovate-spatulate, broadly clawed, erect, not deflected, not ruffled