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{{short description|Species of flowering plant in the passion flower family Passifloraceae}}
{{Taxobox
{{Speciesbox
| image = Passiflora caerulea (2005 10 08) - vrucht.jpg
| image_caption =''Passiflora caerulea'' in fruit
| image = Passiflora caerulea (2019-06-24) frontal-view.jpg
| image_caption =Flower in full bloom together with a wilted flower and a yet unopened bud
| image2 =Passiflora caerulea (2005 10 08) - vrucht open (2).jpg
| image2 =Passiflora caerulea (2005 10 08) - vrucht open (2).jpg
| image2_caption = ''Passiflora caerulea'' cut and opened
| image2_caption = Fruit cut and opened
| regnum = [[Plant]]ae
| genus = Passiflora
| species = caerulea
| unranked_divisio = [[Angiosperms]]
| unranked_classis = [[Eudicots]]
| authority = [[Carl Linnaeus|L.]]
| unranked_ordo = [[Rosids]]
| ordo = [[Malpighiales]]
| familia = [[Passifloraceae]]
| genus = ''[[Passiflora]]''
| species = '''''P. caerulea'''''
| binomial = ''Passiflora caerulea''
| binomial_authority = [[L.]]
}}
}}


'''''[[Passiflora]] caerulea''''', the '''blue passionflower''',<ref name=BSBI07>{{BSBI 2007 |access-date=2014-10-17 }}</ref> '''bluecrown passionflower'''<ref>{{PLANTS|id=PACA22|taxon=Passiflora caerulea|access-date=31 January 2016}}</ref> or '''common passion flower''', is a [[species]] of [[flowering plant]] [[native plant|native]] to South America. It has been introduced elsewhere. It is a vigorous, [[deciduous]] or semi-[[evergreen]] tendril [[vine]] growing to {{cvt|10|m|ft|0}} or more. Its leaves are palmate, and its fragrant flowers are blue-white with a prominent fringe of coronal filaments in bands of blue, white, yellow, and brown. The ovoid orange fruit, growing to {{cvt|6|cm|0}}, is edible, but is variously described as having a bland,<ref name=RHSAZ>{{cite book|title=RHS A-Z encyclopedia of garden plants|year=2008|publisher=Dorling Kindersley|location=United c ZKingdom|isbn=978-1405332 965|pages=1136}}</ref> undesirable,<ref name="cabi"/> or insipid taste.<ref name="tetraphyllin b"/> In South America, the plant is known for its medicinal properties, and is used by both the [[Toba people|Toba]] and the [[Makaa people|Maka]] peoples.<ref name="cabi"/><ref name="mendiondo"/>
'''''Passiflora caerulea''''', commonly known as the '''Blue Passion Flower''' or the '''Common Passion Flower''', is a [[vine]] native to [[South America]] ([[Argentina]], [[Paraguay]] (where it is widely known as the ''Mburucuyá'' in [[Guaraní language|Guaraní]]), [[Uruguay]] and [[Brazil]]). These names may also be applied to ''[[Passiflora edulis]]'' sometimes known as the passionfruit.


==Etymology==
It is popular with gardeners because of its intricate, scented [[flower]]s that have an almost plastic-looking appearance.
The [[Binomial nomenclature|specific epithet]] ''caerulea'' means "blue" and refers to the blue coronal filaments.<ref name=RHSLG>{{cite book|last=Harrison|first=Lorraine|title=RHS Latin for gardeners|year=2012|publisher=Mitchell Beazley|location=United Kingdom|isbn=9781845337315|pages=224}}</ref>


==Description==
==Description==
[[File:Passiflora caerulea (makro close-up).jpg|thumbnail|left|''Passiflora caerulea'' flower]]
A woody vine capable of growing to 15&ndash;20&nbsp;m high where supporting [[tree]]s are available. The [[leaf|leaves]] are alternate, palmately five-lobed like a spread [[hand]] (sometimes three or seven lobes), 10&ndash;18&nbsp;cm long and wide. The base of each leaf has a flagellate-twining tendril 5&ndash;10&nbsp;cm long, which twines around supporting vegetation to hold the plant up.
===Vegetative characteristics===
''Passiflora caerulea'' is a woody vine capable of growing to {{convert|25|m|ft}} high where supporting [[tree]]s are available.<ref name = "keys">{{cite web |title=Factsheet - Passiflora caerulea (Blue Passionflower) |url=https://keys.lucidcentral.org/keys/v3/eafrinet/weeds/key/weeds/Media/Html/Passiflora_caerulea_(Blue_Passionflower).htm |website=keys.lucidcentral.org |access-date=14 August 2018}}</ref> The [[leaf|leaves]] are alternate, palmately five-lobed (sometimes three, seven, or nine lobes), and are up to {{convert|10|cm|in}} in length while being linear-oblong shaped.<ref name = "PIER">{{cite web |title=Passiflora caerulea: info from PIER (PIER species info) |url=http://www.hear.org/pier/species/passiflora_caerulea.htm |website=www.hear.org |publisher=Pacific Island Ecosystems at Risk project (PIER) |access-date=14 August 2018}}</ref> The base of each leaf has a flagellate-twining tendril {{convert|5|–|10|cm|in}} long, which twines around supporting vegetation to hold the plant up.<ref name = "keys"/>
===Generative characteristics===
The [[flower]] is complex, about {{convert|10|cm|in}} in diameter,<ref name = "PIER"/> with the five sepals and petals similar in appearance, whitish in colour, surmounted by a corona of blue or violet filaments, then five greenish-yellow [[stamen]]s and three purple [[carpel|stigma]]s.<ref name = "keys"/> The [[fruit]] is an oval orange-yellow [[Berry (botany)|berry]], {{convert|6|cm|in}} long by {{convert|4|cm|in}} in diameter, containing numerous [[seed]]s.<ref name = "keys"/> It is edible to humans when ripe, but tends to have an undesirable flavour<ref name="cabi">{{cite web |last1=Popay |first1=Ian |title=Passiflora caerulea (blue passionflower) |url=https://www.cabi.org/isc/datasheet/116172 |website=www.cabi.org |access-date=14 August 2018}}</ref> unless allowed to fully ripen in a warm climate and fall naturally from the vine, when it has a mild blackberry flavour, though with a lower sugar content than commonly eaten species.


==Cultivation==
The [[flower]] is complex, about 10&nbsp;cm in diameter, with the five sepals and petals similar in appearance, whitish in colour, surmounted by a corona of blue or violet filaments, then five greenish-yellow [[stamen]]s and three purple [[carpel|stigma]]s. The [[fruit]] is an oval orange-yellow [[berry]] 6&nbsp;cm long by 4&nbsp;cm in diameter, containing numerous [[seed]]s; it is eaten, and the seeds spread by [[mammal]]s and [[bird]]s. In tropical climates, it will flower all year round.
''Passiflora caerulea'' is widely cultivated as a wall-climber or as groundcover. Though hardy down to {{cvt|-10|C|F|abbr=on}}, it requires a sheltered position facing south or west (in the Northern Hemisphere). It can become invasive, the twining shoots constantly appearing unless eradicated. It has gained the [[Royal Horticultural Society]]'s [[Award of Garden Merit]].<ref>{{cite web|title=RHS Plant Selector - ''Passiflora caerulea''|url=http://apps.rhs.org.uk/plantselector/plant?plantid=1386|access-date=25 May 2013|archive-url=https://web.archive.org/web/20130807063959/http://apps.rhs.org.uk/plantselector/plant?plantid=1386|archive-date=7 August 2013|url-status=dead}}</ref>


==Cultivars==
===Cultivars===
[[File:Passiflora caerulea Constance Elliot (3).jpg|thumb|White flowered cultivar ''Passiflora caerulea'' 'Constance Elliott']]
A number of [[cultivar]]s have been produced from the species.
A number of [[cultivar]]s have been produced from the species:
*''' 'Chinensis' '''. Corona filaments paler blue.
*''' 'Constance Elliott' '''. Was raised by Kucombe and Prince in Exeter, Great Britain. It has pure white, fragrant flowers; not as free-flowering as many other [[Cloning|clones]].
*''' 'Grandiflora' '''. Flowers to 20&nbsp;cm in diameter.
*''' 'Hartwiesiana' '''. Flowers white.
*''' 'Regnellii' '''. Has very long corona filaments.


*'Chinensis' (corona filaments paler blue)
The species has been used in numerous [[Hybrid (biology)|hybrids]].
*'Constance Elliott' was raised by Kucombe and Prince in Exeter, [[Great Britain]]. It has pure white, fragrant flowers; not as free-flowering as many other [[Cloning|clones]]. It has also won the Award of Garden Merit from the [[Royal Horticultural Society]].<ref name = RHSPF>{{cite web
| url = https://www.rhs.org.uk/Plants/305875/i-Passiflora-caerulea-i-Constance-Eliott/Details
| title = RHS Plantfinder - ''Passiflora caerulea'' 'Constance Elliott' | access-date = 18 April 2018}}</ref>
*'Pierre Pomie', a pale pink flower form


==Chemical constituents==
==Cultivation and uses==
Compared to ''Passiflora incarnata'', this plant contains higher amounts of the [[Monoamine oxidase inhibitor|MAO-inhibitor]] [[harmine]].<ref>{{cite journal| doi = 10.33697/ajur.2007.020 | doi-access = free | title = Extraction, Identification, and Quantification of Harmala Alkaloids in Three Species of Passiflora | year = 2007 | last1 = Frye | first1 = Abigail | last2 = Haustein | first2 = Catherine | journal = American Journal of Undergraduate Research | volume = 6 | issue = 3 }}</ref>
[[Image:South Central Farm 45.jpg|thumb|The flower of ''P. caerulea'']]
''Passiflora caerulea'' is cultivated worldwide (it is also a pest plant in certain countries). Even though the fruit is edible, it is rather insipid when eaten raw. It can substitute for blackberries. More palatable is the fruit of the ''[[Passiflora edulis]]'', which is sweet and acidic. A [[tea]] can be made of the flower and is said to alleviate stress and [[anxiety]]. However, tetraphyllin B and epi-tetraphyllin B, [[cyanogenic glycoside]]s (which liberate hydrogen cyanide when activated by enzymes), have been found in the leaves. It is possible to boil away most of the cyanide.{{Citation needed|date=June 2009}}. <br />
In [[South America]], it is used to make juice and delicious desserts such as the passion fruit [[mousse]].


==In culture==
==Uses==
[[File:Blue Passion Flower and Fruit.jpg|thumb|''Passiflora caerulea'' flower and fruit]]
The flower of the passion fruit is considered as the national flower of [[Paraguay]]. It is said to be the Jesus Flower. Each part of the flower represents a different part of the [[Passion (Christianity)|Passion of Christ]]. See [[Passiflora]] "Etymology and names" section for more information about the symbolism.
Though the fruit is edible, it is rather insipid when eaten raw. A tea can be made of the flower or leaves; however, tetraphyllin B and epi-tetraphyllin B, [[cyanogenic glycoside]]s which liberate [[hydrogen cyanide]] when activated by enzymes, have been found in the leaves. It is possible to boil away most of the cyanide.<ref name="tetraphyllin b">DS Seiglera, KC Spencera, WS Statlerb, EE Connb, JE Dunnb, '[http://www.sciencedirect.com/science/article/pii/0031942282851911 Tetraphyllin B and epitetraphyillin B sulphates: Novel cyanogenic glucosides from Passiflora caerulea and P. alato-caerulea]', ''Phytochemistry'', 21/9 (1982), 2277-2285.</ref>

In [[South America]], the plant is known for its medicinal uses. It is used in both herbal tea and dietary supplements, as well as in marmalades, ice creams, syrups and beverages.<ref name="cabi"/><ref name="mendiondo">{{cite journal |last1=Mendiondo |first1=G.M. |last2=García |first2=M.T.A. |date=2009 |title=Germination of stored and scarified seeds of ''Passiflora caerulea'' L. (Passifloraceae). |url=https://www.cabi.org/isc/abstract/20093350304 |journal=Plant Biosystems |volume=143 |issue=2 |pages=369–376 |doi=10.1080/11263500902722709 |s2cid=86722536 |issn=1126-3504 |access-date=28 August 2022|hdl=11336/27122 |hdl-access=free }}</ref> It is also used by the indigenous Argentinian [[Toba people|Toba]] and [[Makaa people|Maka]] people.

''Passiflora caerulea'' is sometimes used as a rootstock, to which is grafted a scion of the edible ''[[Passiflora edulis]]''.<ref name="nelliekelly-passionfruit">{{cite web |title=Passionfruit |url=https://nelliekelly.com.au/passionfruit/ |website=Nellie Kelly |access-date=31 October 2023 |ref=nelliekelly-passionfruit |archive-url=https://web.archive.org/web/20231025084337/https://nelliekelly.com.au/passionfruit/ |archive-date=25 October 2023 |url-status=live}}</ref>

The passion flower is the national flower of [[Paraguay]]. Its intricate structure has generated [[Christian symbolism]], each part representing a different part of the [[Passion (Christianity)|Passion of Christ]]. The "[[Etymology]] and names" section of ''[[Passiflora]]'' contains more information about this [[Symbolism (arts)|symbolism]].

==Gallery==
<gallery>
File:Fleur de jardin.JPG|Flower
File:Passiflora caerulea (2005 10 08) - vrucht.jpg|Fruit
File:South Central Farm 45.jpg|Flower of ''Passiflora caerulea''
File:Passiflora caerulea 'Constance Elliot'.jpg|'Constance Elliot', a white flowered cultivar
File:Passiflora "Pierre Pomié".jpg|'Pierre Pomie', a pale pink flowered cultivar
File:Passiflora-caerulea 2019-06-23 (DSC2447-1).jpg|Peculiarity: two fused filaments force anthers upwards, displaying pollen beds otherwise not visible from this perspective.
File:Passiflora caerulea -Passiflore bleue-Fleurs-20210705.jpg|''Passiflora caerulea'' flower
File:Passiflora caerulea seeds.jpg|The seeds of ''P. caerulea'', the red gel-like substance around them removed
</gallery>


==References==
==References==
{{Reflist}}
{{Unreferenced|date=June 2009}}


==External links==
==External links==
{{Commons category}}
{{commons}}
*[http://www.topwalks.net/plants/blue/passiflora_caerulea_more.htm Passiflora caerulea in Topwalks]
*[http://www.topwalks.net/plants/blue/passiflora_caerulea_more.htm Topwalks.net: ''Passiflora caerulea'']

{{Passiflora}}
{{Taxonbar|from=Q161120}}
{{Authority control}}


[[Category:Passiflora|caerulea]]
[[Category:Passiflora|caerulea]]
[[Category:Garden plants]]
[[Category:Flora of Uruguay]]
[[Category:Flora of Argentina]]
[[Category:Flora of Argentina]]
[[Category:Flora of Brazil]]
[[Category:Flora of Brazil]]
[[Category:Poisonous plants]]
[[Category:Flora of Uruguay]]
[[Category:Garden plants of South America]]

[[Category:Plants described in 1753]]
[[gn:Mburukuja]]
[[Category:Taxa named by Carl Linnaeus]]
[[az:Passiflora caerulea]]
[[bg:Синя пасифлора]]
[[bs:Pasijonka]]
[[ca:Passionera blava]]
[[de:Blaue Passionsblume]]
[[es:Passiflora caerulea]]
[[fa:پیچ ساعتی گل آبی رنگ]]
[[fr:Passiflora caerulea]]
[[ko:시계꽃]]
[[hsb:Módra ćerpjenka]]
[[hr:Passiflora caerulea]]
[[he:שעונית כחולה]]
[[nl:Blauwe passiebloem]]
[[ne:घडीफूल]]
[[ja:トケイソウ]]
[[pl:Męczennica błękitna]]
[[pt:Passiflora caerulea]]
[[sv:Blå passionsblomma]]
[[tr:Passiflora caerulea]]
[[vi:Lạc tiên cảnh]]

Latest revision as of 01:10, 6 June 2024

Passiflora caerulea
Flower in full bloom together with a wilted flower and a yet unopened bud
Fruit cut and opened
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Passifloraceae
Genus: Passiflora
Species:
P. caerulea
Binomial name
Passiflora caerulea

Passiflora caerulea, the blue passionflower,[1] bluecrown passionflower[2] or common passion flower, is a species of flowering plant native to South America. It has been introduced elsewhere. It is a vigorous, deciduous or semi-evergreen tendril vine growing to 10 m (33 ft) or more. Its leaves are palmate, and its fragrant flowers are blue-white with a prominent fringe of coronal filaments in bands of blue, white, yellow, and brown. The ovoid orange fruit, growing to 6 cm (2 in), is edible, but is variously described as having a bland,[3] undesirable,[4] or insipid taste.[5] In South America, the plant is known for its medicinal properties, and is used by both the Toba and the Maka peoples.[4][6]

Etymology[edit]

The specific epithet caerulea means "blue" and refers to the blue coronal filaments.[7]

Description[edit]

Passiflora caerulea flower

Vegetative characteristics[edit]

Passiflora caerulea is a woody vine capable of growing to 25 metres (82 ft) high where supporting trees are available.[8] The leaves are alternate, palmately five-lobed (sometimes three, seven, or nine lobes), and are up to 10 centimetres (3.9 in) in length while being linear-oblong shaped.[9] The base of each leaf has a flagellate-twining tendril 5–10 centimetres (2.0–3.9 in) long, which twines around supporting vegetation to hold the plant up.[8]

Generative characteristics[edit]

The flower is complex, about 10 centimetres (3.9 in) in diameter,[9] with the five sepals and petals similar in appearance, whitish in colour, surmounted by a corona of blue or violet filaments, then five greenish-yellow stamens and three purple stigmas.[8] The fruit is an oval orange-yellow berry, 6 centimetres (2.4 in) long by 4 centimetres (1.6 in) in diameter, containing numerous seeds.[8] It is edible to humans when ripe, but tends to have an undesirable flavour[4] unless allowed to fully ripen in a warm climate and fall naturally from the vine, when it has a mild blackberry flavour, though with a lower sugar content than commonly eaten species.

Cultivation[edit]

Passiflora caerulea is widely cultivated as a wall-climber or as groundcover. Though hardy down to −10 °C (14 °F), it requires a sheltered position facing south or west (in the Northern Hemisphere). It can become invasive, the twining shoots constantly appearing unless eradicated. It has gained the Royal Horticultural Society's Award of Garden Merit.[10]

Cultivars[edit]

White flowered cultivar Passiflora caerulea 'Constance Elliott'

A number of cultivars have been produced from the species:

  • 'Chinensis' (corona filaments paler blue)
  • 'Constance Elliott' was raised by Kucombe and Prince in Exeter, Great Britain. It has pure white, fragrant flowers; not as free-flowering as many other clones. It has also won the Award of Garden Merit from the Royal Horticultural Society.[11]
  • 'Pierre Pomie', a pale pink flower form

Chemical constituents[edit]

Compared to Passiflora incarnata, this plant contains higher amounts of the MAO-inhibitor harmine.[12]

Uses[edit]

Passiflora caerulea flower and fruit

Though the fruit is edible, it is rather insipid when eaten raw. A tea can be made of the flower or leaves; however, tetraphyllin B and epi-tetraphyllin B, cyanogenic glycosides which liberate hydrogen cyanide when activated by enzymes, have been found in the leaves. It is possible to boil away most of the cyanide.[5]

In South America, the plant is known for its medicinal uses. It is used in both herbal tea and dietary supplements, as well as in marmalades, ice creams, syrups and beverages.[4][6] It is also used by the indigenous Argentinian Toba and Maka people.

Passiflora caerulea is sometimes used as a rootstock, to which is grafted a scion of the edible Passiflora edulis.[13]

The passion flower is the national flower of Paraguay. Its intricate structure has generated Christian symbolism, each part representing a different part of the Passion of Christ. The "Etymology and names" section of Passiflora contains more information about this symbolism.

Gallery[edit]

References[edit]

  1. ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  2. ^ USDA, NRCS (n.d.). "Passiflora caerulea". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 31 January 2016.
  3. ^ RHS A-Z encyclopedia of garden plants. United c ZKingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332 965.
  4. ^ a b c d Popay, Ian. "Passiflora caerulea (blue passionflower)". www.cabi.org. Retrieved 14 August 2018.
  5. ^ a b DS Seiglera, KC Spencera, WS Statlerb, EE Connb, JE Dunnb, 'Tetraphyllin B and epitetraphyillin B sulphates: Novel cyanogenic glucosides from Passiflora caerulea and P. alato-caerulea', Phytochemistry, 21/9 (1982), 2277-2285.
  6. ^ a b Mendiondo, G.M.; García, M.T.A. (2009). "Germination of stored and scarified seeds of Passiflora caerulea L. (Passifloraceae)". Plant Biosystems. 143 (2): 369–376. doi:10.1080/11263500902722709. hdl:11336/27122. ISSN 1126-3504. S2CID 86722536. Retrieved 28 August 2022.
  7. ^ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  8. ^ a b c d "Factsheet - Passiflora caerulea (Blue Passionflower)". keys.lucidcentral.org. Retrieved 14 August 2018.
  9. ^ a b "Passiflora caerulea: info from PIER (PIER species info)". www.hear.org. Pacific Island Ecosystems at Risk project (PIER). Retrieved 14 August 2018.
  10. ^ "RHS Plant Selector - Passiflora caerulea". Archived from the original on 7 August 2013. Retrieved 25 May 2013.
  11. ^ "RHS Plantfinder - Passiflora caerulea 'Constance Elliott'". Retrieved 18 April 2018.
  12. ^ Frye, Abigail; Haustein, Catherine (2007). "Extraction, Identification, and Quantification of Harmala Alkaloids in Three Species of Passiflora". American Journal of Undergraduate Research. 6 (3). doi:10.33697/ajur.2007.020.
  13. ^ "Passionfruit". Nellie Kelly. Archived from the original on 25 October 2023. Retrieved 31 October 2023.

External links[edit]