Passiflora lutea

Linnaeus

Sp. Pl. 2: 958. 1753.

Common names: Yellow passionflower
EndemicIllustratedWeedy
Synonyms: Passiflora lutea var. glabriflora Fernald
Treatment appears in FNA Volume 6. Treatment on page 179. Mentioned on page 172, 173, 174, 180.

Stems terete to subangular, glabrous or sparsely hairy, sometimes densely hairy when young, (aboveground stems annual). Leaves not pungent, glabrous or minutely hairy; stipules linearlanceolate, falcate, 2–5 × 0.5–1 mm, eglandular; petiole eglandular; blade roughly symmetric, 2–10 (–15) × 1–8 (–12) cm shallowly to rarely deeply 3 (–5) -lobed, middle lobe slightly shorter to longer than lateral lobes (1/3–2/3 blade length), margins entire; abaxial fine veins prominently raised (especially in dried specimens), abaxial nectaries absent. Floral bracts absent. Flowers: floral-tube absent; sepals green, 6–10 × 2–3 mm; petals pale green-yellow, 3–7 × 1 mm; corona filament whorls 2, outer filaments pale green to white basally, pale-yellow apically, linear, terete, 5–10 mm. Berries purple-black, globose to ovoid, 8–15 × 8–15 mm. 2n = 24, 84.


Phenology: Flowering (Mar–)Jun–Sep(–Oct).
Habitat: Mesic, open woodlands and forest margins, 0–600(–1100) m

Distribution

V6 326-distribution-map.jpg

Ala., Ark., Del., D.C., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Miss., Mo., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.

Discussion

Perhaps the most widespread species of the genus endemic in the flora area, Passiflora lutea is probably becoming rarer at its geographic limits because of habitat loss. It is absent from southernmost Texas, and is therefore not sympatric with the similar P. filipes.

Passiflora lutea is our only native species, and one of very few in the genus, that has hypogeal seed germination. It is also extensively rhizomatous, forming rhizomes even as small seedlings. Very cold-hardy, it is able to thrive in cultivation far north of its natural range. The plants are shade-tolerant, but those growing in the open can occasionally form dense masses. The leaves often turn bright yellow in autumn.

Selected References

None.

Lower Taxa

None.

... more about "Passiflora lutea"
short-to-elongate +
versatile +  and dorsifixed +
Douglas H. Goldman +  and John M. MacDougal +
Linnaeus +
smooth;rough or corky +
cuneate;cordate +
purple-black +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
3(-5)-lobed +
1cm;8cm +
scattered;whorled +
Yellow passionflower +
Ala. +, Ark. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
unisexual +  and bisexual +
Mesic, open woodlands and forest margins, 0–600(–1100) m +
many-branched +  and simple +
paired +  and solitary +
hairy +  and glabrous +
membranous +
shorter to longer +
pale-yellow +, pale green +  and white basally +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
3[-5]-carpellate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +
Flowering (Mar–)Jun–Sep(–Oct). +
compressed +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Endemic +, Illustrated +  and Weedy +
terete;subangular +
2-lobed;clavate;reniform +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
distinct +
grooved +  and reticulate +
Passiflora lutea var. glabriflora +
Passiflora lutea +
Passiflora +
species +
hairy +  and glabrous +
herbaceous +  and woody +