Passiflora tarminiana
Passiflora caerulea
banana passion fruit, banana passionflower, banana poka
blue passion flower, bluecrown passionflower
terete, densely hairy.
angular when young, glabrous.
not pungent, densely soft-hairy abaxially, sparsely hairy adaxially;
stipules subreniform, often leaflike, 4–7 × 2–3 mm, eglandular;
petiole glandular, glands emergent protuberances;
blade roughly symmetric, 5.5–16(–28) × 7–16(–29) cm, deeply 3-lobed, middle lobe as long as or longer than lateral lobes, margins serrate;
abaxial fine veins prominently raised, abaxial nectaries absent.
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 tube elongate, 60–80 mm deep;
sepals pink, 45–60 × 12–25 mm;
petals pink, 40–54 × 15–20 mm;
corona filament whorls 1, filaments tuberculate knobs, purple basally, white apically, 1–2 mm.
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.
yellow to orange-yellow, oblong to ellipsoid-fusiform, 100–140 × 35–45 mm.
yellow-orange to orange, ovoid to ellipsoid, 30–50 × 30–35 mm.
bracts leaflike, 25–50 × 20–30 mm, margins entire, eglandular.
bracts ovate to ovate-oblong, 15–25 × 10–15 mm, margins entire or weakly serrate, eglandular.
= 18.
Passiflora tarminiana
Passiflora caerulea
Passiflora tarminiana is sparingly naturalized in the eastern San Francisco Bay area (F. Hrusa et al. 2002) and southward along the coast to San Luis Obispo County, in areas of minimal summer drought.
This species was recently described, and is commonly confused with Passiflora mollissima (Kunth) L. H. Bailey [now usually recognized as P. tripartita var. mollissima (Knuth) Holm-Nielsen & P. Jørgensen]. Many reports of P. mollissima in agricultural, horticultural, and weed-science literature actually apply to P. tarminiana. An attractive plant with large, edible fruits (T. Ulmer and J. M. MacDougal 2004), it is an extremely aggressive weed in Hawaii (A. M. La Rosa 1984, as P. mollissima) and other areas where it has been introduced in the Old World tropics and subtropics. The species is unlikely to become a widespread weed in the continental United States because it cannot survive frost nor occasional desiccation.
A similar, closely related species, Passiflora mixta Linnaeus f., is a rare escape in San Francisco, California; it can be distinguished from P. tarminiana by its angular young stems, persistent stipules (deciduous in P. tarminiana), and a floral tube 80–110 mm deep, 1.6–2.6 times the sepal length (1.3–1.6 times in P. tarminiana).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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