Aristolochia californica |
Aristolochia tomentosa |
|
---|---|---|
California Dutchman's pipe, California pipevine, California snakeroot |
common Dutchman's pipe, pipevine, woolly Dutchman's pipe |
|
Habit | Lianas, twining, to 5 m, woody. | Lianas, twining, to 25 m, woody. |
Young stem | ribbed, tomentose. |
ribbed, tomentose. |
Leaves | blade ovate to reniform, 4-12 × 3-10 cm, base cordate, sinus depth 2-6 cm, apex obtuse to rounded; surfaces abaxially tomentose; venation palmate-pinnate. |
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. |
Inflorescences | on new growth, axillary, solitary flowers; peduncle bracteolate, 1-4 cm; bracteoles reniform, to 8 mm. |
on new growth, axillary, solitary flowers; peduncle not bracteolate, 1-7 cm. |
Flowers | calyx brown-purple, bent; utricle pendent, ellipsoid to narrowly ellipsoid, 0.5-5 × 1-1.5 cm; syrinx absent; tube bent, cylindric, 1-3 × 1-1.7 cm; annulus absent; limb purplish, 3-lobed, lobes 2 × 2 cm, glabrous; gynostemium 3-lobed, cylindric, 5-10 mm; anthers 6; ovary 6-locular, 1-4 cm. |
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. |
Capsule | ovoid to cylindric, 5-6 × 1-3 cm, dehiscence basipetal; valves 6; septa entire, not attached to valves. |
ellipsoid to cylindric, 6-8 × 4-6 cm, dehiscence basipetal; valves 3; septa entire, not attached to valves. |
Seeds | flat, triangular, 1-1.2 × 1 cm. |
flat, triangular, 1 × 1 cm. |
2n | = 28, 32. |
= 28. |
Aristolochia californica |
Aristolochia tomentosa |
|
Phenology | Flowering spring. | Flowering late spring–summer. |
Habitat | Along streams, in forest thickets, chaparral | Alluvial soils along rivers and streams |
Elevation | 50-700(-1000) m (200-2300(-3300) ft) | 0–500 m (0–1600 ft) |
Distribution |
CA
|
AL; AR; FL; GA; IL; IN; KS; KY; LA; MO; MS; NC; OK; TN; TX
|
Discussion | The leaves of Aristolochia californica are eaten by larvae of the western swallowtail butterfly, Battus philenor hirsuta (Skinner) (W. H. Howe 1975). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Aristolochiaceae > Aristolochia | Aristolochiaceae > Aristolochia |
Sibling taxa | ||
Synonyms | Isotrema tomentosa | |
Name authority | Torrey: Pacif. Railr. Rep. 4(5): 128. (1857) | Sims: Bot. Mag. 33: plate 1369. (1811) |
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