CARDIOCRINUM  Feed back button

[Hover over the images below for larger versions of the pictures]

As the genus is so small, we have expanding the collection by adding plants with a variety of known provenances to provide examples of any variations that exist.

During the years 2014 to 2015, we had DNA barcodes sequenced from an example of each strain in the collection.

The results of this sequencing were used to write a report on the taxonomy of the genus which is available here and which was used to revise the contents of this section of the website in 2016. Most of the references on this page are to that document. [1]

There are two or three species of Cardiocrinum, Cardiocrinum cathayanum, ('though I have some doubts about the existence of this species [2]), C. cordatum and C. giganteum. C. cordatum has a single sub-species; C. cordatum s. sp. glehnii [3] and C. giganteum has a variety, C. giganteum v. yunnanense [4] which in turn has two unstable forms, C. giganteum v. yunnanense f. alba and C. giganteum v. yunnanense f. rosea. [5]

 The plants 

The photos in each section are not necessarily all of the same plant or flower but they are typical.

 Cardiocrinum cathayanum  [6]

The only examples of C. cathayanum in the UK of which I'm aware are the descendents of Kew 2007296.

SL image 0013

C. cathayanum,
plant
SL image 0014

C. cathayanum
flower close-up
SL image 0016

C. cathayanum
flower and leaves

We've bought a number of plants labelled as C. cathayanum but DNA barcoding and their morphology has shown these to be C. giganteum v. yunnanense [7]

 Cardiocrinum cordatum  [8]

C. cordatum is much smaller than giganteum, growing to 1 - 1.5m, and its flowers appear as smaller versions of those of C. giganteum Whilst the basic flower colour is the greeny-cream of C. giganteum , there is hardly any magenta inside the trumpets of C. cordatum.

C. cordatum, young leaf

C. cordatum, young leaf
C. cordatum, flowers

C. cordatum flowers
C. cordatum, flower

C. cordatum flower
C. cordatum, flower structure

C. cordatum flower structure

The scent is perhaps the most delicate of all the Cardiocrinums and is present throughout the day. The flowers stem above was 1.33m, (4' 4"), tall.

The new leaf and flower colours are not shown by all plants. The database record 16 shows a Japanese collection with much greener leaves and flowers with more magenta in the throat.

 Multi-carpism of C. cordatum 

It's been reported [9] that, in some cases, C. cordatum doesn't die after flowering although every other reference I've found states that the genus as a whole is monocarpic. Follow this link for more details.

 Humpback C. cordatum flowers 

Some C. cordatum flowers have a definite 'humpback'. This can be seen very slightly in the above pictures but far more clearly in a Japanese form which flowered in 2011.

 Cardiocrinum cordatum glehnii  [10]

C. cordatum s. sp. glehnii, is reported as having "more tubular and greenish blooms" than the species. Our first flowering examples had squat flowers, less then half the length of C. giganteum, and with far more green and less magenta than any other flower. The flower stems below were 6' tall and the scent was more spicy than other types.

C. cordatum glehnii, young leaf

C. cordatum glehnii, young leaf
C. cordatum glehnii, flowers

C. cordatum glehnii flowers
C. cordatum glehnii, flowers close-up

C. cordatum glehnii flower
C. cordatum glehnii, flower structure

C. cordatum glehnii flower structure

There was just a touch of magenta in the throat of the flowers and a faint speckling at the ends of the petals as can be seen in the close-up of the flower above. They were also very attractive to midges!

 Cardiocrinum giganteum  [11]

C. giganteum, young leaf

C. giganteum, young leaf
C. giganteum flowers

C. giganteum flowers
C. giganteum flower

C. giganteum flower
C. giganteum flower structure

C. giganteum flower structure

 Cardiocrinum giganteum v. yunnanense  [12]

C. giganteum yunnanense grows to a similar height to C. giganteum but is more slender with slightly narrower, smoother and less glossy leaves.

C. giganteum yunnanense, young leaf

C. gig. yunnanense, young leaf
C. giganteum yunnanense, flowers

C. gig. yunnanense flowers
C. giganteum yunnanense flower

C. gig. yunnanense flower
C. giganteum yunnanense flower structure

C. gig. yunnanense flower structure

Click the link to see the current plant database, (all plants), or a map of the garden showing the Cardiocrinum positions, (living plants only). Photos of the flower spikes are now taken with a white, 3' rule alongside the stem.

As well as the plants lised in the database and marked on the map, there are about another 100 - 150 C. giganteum & C. giganteum yunnanense in other parts of the garden.

[1] 'The Use of DNA Barcoding in the Clarification of the Taxonomy of the Genus Cardiocrinum', published online, July 2016, [DBTGC]
[2] DBTGC p.17
[3] DBTGC p.15
[4] DBTGC p.9
[5] DBTGC p.18
[6] DBTGC p.16
[7] DBTGC p.17
[8] DBTGC p.11
[9] Bleddyn and Sue Wynn-Jones, Crûg farm Nursery
[10] DBTGC p.11
[11] DBTGC p.5
[12] DBTGC p.6