Aristolochia tomentosa |
Aristolochia coryi |
|
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common Dutchman's pipe, pipevine, woolly Dutchman's pipe |
Cory's Dutchman's-pipe |
|
Habit | Lianas, twining, to 25 m, woody. | Herbs, procumbent, to 0.4 m. Young stem smooth, glabrous or puberulent. |
Young stem | ribbed, tomentose. |
|
Leaves | blade ovate to reniform, 9-20 × 8-15 cm, base cordate, sinus depth 1-2 cm, apex obtuse to acute; surfaces abaxially tomentose; venation palmate-pinnate. |
blade deltate, 3-5 × 3-5 cm, base cordate, sinus depth 1-2 cm, apex acute; surfaces abaxially puberulent; venation palmate. |
Inflorescences | on new growth, axillary, solitary flowers; peduncle not bracteolate, 1-7 cm. |
on new growth, axillary, solitary flowers; peduncle bracteolate, 1-4 cm; bracteoles lanceolate, to 5 mm. |
Flowers | calyx yellow-green, sharply bent; utricle pendent, globose to cylindric, 0.5-1 × 0.5-0.8 cm; syrinx absent; tube bent, cylindric, 1-3 × 0.5 cm; annulus rugulose; limb yellow, 3-lobed, lobes triangular, 2 × 2 cm, glabrous; gynostemium 3-lobed, globose, 3 mm; anthers 6; ovary 6-locular, 1-7 cm. |
calyx yellow-green or yellow-brown, curved; utricle horizontal, ovoid to obconic, 0.8 × 0.6 cm; syrinx present, funnel-shaped, 1-2 mm; tube curved, cylindric, 1-3 × 0.3 cm; annulus absent; limb brown with purple spots, 1-lobed, lobe strap-shaped, 1.5-2 × 1.5 cm, glabrous; gynostemium 5-lobed, crown-shaped, 1-4 mm; anthers 5; ovary 5-locular, 1-4 cm. |
Capsule | ellipsoid to cylindric, 6-8 × 4-6 cm, dehiscence basipetal; valves 3; septa entire, not attached to valves. |
globose, 1.2 × 1-3 cm, dehiscence basipetal; valves 5; septa entire, not attached to valves. |
Seeds | flat, triangular, 1 × 1 cm. |
flat, triangular, 0.5 × 0.6 cm. |
2n | = 28. |
|
Aristolochia tomentosa |
Aristolochia coryi |
|
Phenology | Flowering late spring–summer. | Flowering late spring–summer. |
Habitat | Alluvial soils along rivers and streams | Rocky slopes, especially on limestone, occasionally river bottoms |
Elevation | 0–500 m (0–1600 ft) | 0–600 m (0–2000 ft) |
Distribution |
AL; AR; FL; GA; IL; IN; KS; KY; LA; MO; MS; NC; OK; TN; TX
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TX; Mexico |
Discussion | Aristolochia tomentosa has escaped from cultivation in various places, including Virginia; this is not documented. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Aristolochiaceae > Aristolochia | Aristolochiaceae > Aristolochia |
Sibling taxa | ||
Synonyms | Isotrema tomentosa | |
Name authority | Sims: Bot. Mag. 33: plate 1369. (1811) | I. M. Johnston: J. Arnold Arbor. 21: 256. (1940) |
Web links |