Passiflora caerulea

Linnaeus

Sp. Pl. 2: 959. 1753.

Common names: Blue passionflower
Introduced
Treatment appears in FNA Volume 6. Treatment on page 181. Mentioned on page 173, 175.

Stems angular when young, glabrous. Leaves weakly pungent, glabrous; stipules subreniform, 10–20 × 5–10 mm, glandular-serrate; petiole glandular, glands clavate; blade roughly symmetric, 3–10 (–16) × 4–11 (–14) cm, deeply (3–) 5–7 (–9) -lobed, middle lobe as long as or longer than lateral lobes, margins entire but often serrate basally on lobes; abaxial fine veins prominently raised, abaxial nectaries scattered along margins. Floral bracts ovate to ovate-oblong, 15–25 × 10–15 mm, margins entire or weakly serrate, eglandular. Flowers: floral-tube cuplike, 4–5 mm deep; sepals white, 20–35 × 10–15 mm; petals white, 20–40 × 10–15 mm; corona filament whorls 4, outer filaments dark purple basally, white medially, purple apically (rarely entirely white), linear, terete to slightly flattened, 10–20 mm. Berries yellow-orange to orange, ovoid to ellipsoid, 30–50 × 30–35 mm. 2n = 18.


Phenology: Flowering Mar–Jun.
Habitat: Disturbed areas, open woodlands, chaparral
Elevation: 0–400 m

Distribution

V6 330-distribution-map.jpg

Introduced; Calif., South America (Argentina), South America (Brazil), South America (Paraguay), South America (Uruguay)

Discussion

Passiflora caerulea is cultivated widely in the flora area but naturalized only in the Los Angeles metropolitan area (see F. Hrusa et al. 2002). It is possibly introduced in the Mule Mountains of southeastern Arizona (J. Koweek, pers. comm.), although this has not been confirmed. It was reported also from Utah by S. L. Welsh et al. (2003), although as “cultivated...long-persisting,” suggesting that it is not actually naturalized there. This species is cold-hardy and can be cultivated in gardens in relatively cold regions (at least USDA plant hardiness zone 6), but it is unlikely to flower in such areas because of relatively short growing seasons, although it still makes an interesting foliage plant. Even in the absence of sexual reproduction, this species can persist and even spread locally by root suckering.

The artificial hybrid Passiflora ×belotii will key to P. caerulea in this treatment. However, the leaves of P. ×belotii are consistently three-lobed, unlike the primarily five- to seven-lobed leaves of P. caerulea.

Selected References

None.

Lower Taxa

None.

... more about "Passiflora caerulea"
short-to-elongate +
versatile +  and dorsifixed +
Douglas H. Goldman +  and John M. MacDougal +
Linnaeus +
smooth;rough or corky +
cuneate;cordate +
yellow-orange +  and orange +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
10 cm100 mm <br />0.1 m <br /> (16 cm160 mm <br />0.16 m <br />) +
11 cm110 mm <br />0.11 m <br /> (14 cm140 mm <br />0.14 m <br />) +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
(3-)5-7(-9)-lobed +
4cm;11cm +
scattered;whorled +
Blue passionflower +
Calif. +, South America (Argentina) +, South America (Brazil) +, South America (Paraguay) +  and South America (Uruguay) +
0–400 m +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
10mm +  and 15mm +
unisexual +  and bisexual +
clavate +
Disturbed areas, open woodlands, chaparral +
many-branched +  and simple +
paired +  and solitary +
membranous +
serrate +  and entire +
white +  and dark purple +
terete +  and slightly flattened +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
3[-5]-carpellate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering Mar–Jun. +
compressed +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Introduced +
terete;angled +
2-lobed;clavate;reniform +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
subreniform +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
distinct +
grooved +  and reticulate +
Passiflora caerulea +
Passiflora +
species +
hairy +  and glabrous +
herbaceous +  and woody +