Scottish Rock Garden Club Forum
General Subjects => Alpines => Topic started by: ruweiss on July 29, 2011, 10:09:15 PM
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Flowering of the Alpine plants gets rarer now, but some summer flowering gentians start to
show their pretty faces.
Gentiana calycosa from Western USA flowers reliably since many years in a moist position.
I was quite amazed by the whitish form of Gentiana georgei from Hualong/China, a gift from
a Czech rock-gardening friend.
Gentiana veitchiorum from Chinese seed also dislikes too dry places.
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Beautiful plants. I like Gentiana.
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As many summer/autumn flowering gentians prefer a cool ,rather moist, spot in the rock garden are there any that 'd be happy in full sun and rather dryish soil?
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John - I have a very nice form of Gentiana septemfida (subsp. grossheimii) which does well on our sand bed (seed came from Plant World in Devon). Also G. paradoxa is very fine and has narrow foliage reminiscent of some of the autumn gentians; there are good hybrids of this (see the Jelitto seed catalogue). The plant below has twice as many flowers now and looks very good.
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From the garden today, Gentiana 'Joan Ward' is beginning to flower.
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Some lovely Gentianas posted to date, so hard to pick a favourite.
This one was grown as G. karoo but may be dahurica. Any thoughts?
johnw
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Gentiana kurroo Royle, Illus. Bot. Himal. 278, 1835; Clarke in Fl. Brit. Ind. IV: 117. 1883; Coventry, Wild. Fls. Kashm. III: 81, Pl. XLI, 1927; Blatter, Beaut. Fls. Kashm. II: 37, P1. 41, 1927; Javeid, Fl. Srinagar I: 544, 1970; Stewart, Ann. Cat. Vas. Pl. W. PaL & Kashm. 557:1972.
Pneumonthe kurroo (Royle) G. Don, Phil. Mag. 75, 1836; Gentianodes kurroo (Royle) Omer, Ali & Qaiser, Pak. J. Bot. 20: 16. 1988.
Perennial herb, with thick, stout rootstock. Flowering stems ascending to semi-erect, one to many from rootstock, simple, purplish, 30-45 cm high, 1-5 flowered. Leaves radical as well as cauline; radical ones rosulate, linear to oblong-oblanceolate, 5-10 X 0.5-1.5 cm, entire-crenate, cormate at base, slightly reflexed at margins, single veined, acute; cauline leaves, opposite decussate, smaller, in pairs, linear-oblong, 2-5 X 0.3-0.6cm, entire, acute, reflexed at margins, each pair connate at base and forming a 0.4-1.0 cm long tube. Flowers 1-5 on each stem, axillary as well as terminal, on 1-3 cm long pedicels, campanulate, showy, 3-5 cm long. Calyx 2.5- 4 cm long; tube 0.8-1.2 cm long; lobes unequal, linear, acute, 1-2 cm long, sinuses between lobes obtuse. Corolla 2.5-5 cm long, bright-blue, freckled with white and yellowish inside; tube 1.5-3.5 cm long; lobes ovate, entire, acute, 0.5-1.2 x 0.4-0.9 cm. Stamens 5; filaments slender, adnate at middle of the corolla tube, slightly winged at base; anthers dorsifixed, bilobed, [ or -] sagittate, creamy-white. Ovary lanceolate, shortly stipitate, 1-2.3 x 0.3-0.7 cm; style not distinct; stigma prominent, slightly bilobed. Capsule stalked, lanceolate, 1.8-3.2 x 0.5-1 cm. Seeds numerous, oval, reticulate .
Gentiana dahurica Fischer, Mém. Soc. Imp. Naturalistes Moscou. 3: 63. 1812.
Perennials 10-25 cm tall. Roots to 20 × 1.5 cm. Stems ascending, stout, simple, glabrous. Basal leaves petiole 2-4 cm, membranous; leaf blade linear-elliptic to elliptic-lanceolate, 5-15 × 0.8-1.4 cm, base narrowed, margin scabrous, apex acuminate, veins 3-5. Stem leaves 3-5 pairs; petiole 5-10 mm, shortened toward apex; leaf blade linear to linear-lanceolate, 2-5 cm × 2-4 mm, base obtuse, margin scabrous, apex acuminate, veins 1-3. Cymes few to many flowered. Pedicel to 3 cm. Calyx tube 7-10 mm, membranous, entire or rarely slightly split on 1 side; lobes 1-5, linear to subulate, 3-8 mm, unequal. Corolla dark blue-purple, with yellow spots in throat, funnelform or campanulate, 2.5-4.5 cm; lobes ovate-elliptic to ovate, 4-7 mm, margin entire, apex obtuse; plicae ovate to triangular, 1.5-2 mm, margin entire or erose, apex obtuse. Stamens inserted at or just below middle of corolla tube; filaments (0.8-)1-1.2 cm; anthers narrowly ellipsoid, 2-3 mm. Style 2-4 mm; stigma lobes oblong. Capsules sessile, narrowly ellipsoid, 2.3-3 cm. Seeds light brown, ellipsoid, 1.2-1.5 mm. Fl. and fr. Jul-Sep.
Lot of flowers in those pretty heads you show, John......
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Over the weekend I picked up a copy of "Gentians in the Garden" by G H Berry, published by Faber circa 1951, cost me 50p. He grew all of his Gentians in pots. It's probably a bit out of date taxonomically but it's well written and easy to follow for someone like me just dipping their toe in the Gentiana water. Well recommended.
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You're right David, a jolly good book and at 50p, it must please even your Yorkshire soul. ;D Mine was bought so long ago that it probably didn't cost much more, though in those days would have been WORTH a lot more. No regrets though. :)
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Forgot to say... Kohlein and Jermyn say G. dahurica has four lobes to the flowers..... :)
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Thanks Maggi, now we will have to get to work!
johnw
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Flowering now Gentiana 'Black Boy', grown from SRGC seed sown in February 2000. It looks like septemfida group but I cannot find any information about it. I need to move either the geranium or the gentian to give it more space.
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Hi all thanks for all the pictures I have some hybrid Gentians in the garden so am posting one interesting variation it is G. septemfida group we have a white one as well. Roma we had a Gentian Black boy years ago from the Stones at Askival never found out anything about it but perhaps septemfida group. cheers Ian the Christie kind.
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Some lovely Gentianas posted to date, so hard to pick a favourite.
This one was grown as G. karoo but may be dahurica. Any thoughts?
By the broad upper leaves Gentiana cruciata probably in the variety phlogifolia.
Gentiana dahurica is narrow-leaved as the plant in the linked picture.
http://www.alexsad.com/item.php?pid=_root_al_mx_vd_0040-76
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Forgot to say... Kohlein and Jermyn say G. dahurica has four lobes to the flowers..... :)
Fischer wrote explicitly corolla quinquefida in his original description
http://biodiversitylibrary.org/page/10110044
Gardening books writers excel at exaggerated fancy.
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Super sunshine today after yesterdays monsoon. I post another picture of the Gentian hybrid with a Wasp enjoying the flowers plus a picture of the white hyb just opening, cheers Ian the Christie kind.
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Another gentian flowering just now is G. paradoxa, I do know that this is variable and many hybrids are around this is what I have, cheers Ian the Christie kind.
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It's very interesting spring comes much earlier to GB than here but sumer flowers bloom at the same time. My G. paradoxa is flowering now too. It's true because came directly from Caucasus.
(http://cs10619.vkontakte.ru/u6450879/97775188/y_ca0c6fa9.jpg)
Also some septemfidous gentians are in bloom.
(http://cs10619.vkontakte.ru/u6450879/97775188/y_8a4e3427.jpg)
(http://cs10619.vkontakte.ru/u6450879/97775188/y_180894ad.jpg)
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Gentiana szechenyii from Chinese seed also dislikes too dry places.
...Gentiana georgei
Rudi
Are you sure? Your Gentiana szechenyii looks like G. sino-ornata or something near it, and Gentiana georgei looks like... Gentiana szechenyii. :)
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Very nice indeed Olga thanks for the pictures, cheers Ian the Christie kind.
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I have been looking again at the pictures of g georgei white and I think the flowers look like Gentiana stipitata var tizuensis
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Ian
Gentiana stipitata var tizuensis is much smaller and differs in habit. Big flowers and rosette of leaves are typical to G. georgei and szechenyii.
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Thanks Olga, the pictures are very interesting and what I have seen in China were different sure all plants are variable, wish I could go back. cheers Ian the Christie kind.
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Gentiana szechenyii from Chinese seed also dislikes too dry places.
...Gentiana georgei
Rudi
Are you sure? Your Gentiana szechenyii looks like G. sino-ornata or something near it, and Gentiana georgei looks like... Gentiana szechenyii. :)
Olga,
you are right. I made a mistake and gave a wrong name to the blue gentian. Sorry, the true name is
Gentiana veitchiorum and not G. szechenyi! (Would be grateful if Maggi could change it.) The plant was
raised from wild collected seeds. The attached photo shows the entire plant.
Got the white G. georgei from Vojtech Holubec and am quite sure that he gave me the true thing. As you
can see, it is now out of flower.
You are right, G. stipitata v. tizuensis is smaller than G. geogei and szechenyi.
An Ice Blue seedling of G. angustifolia is flowering now.
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(Would be grateful if Maggi could change it.)
I have done so with pleasure, Rudi :)
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Thank you, Maggi!
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Hi Rudi, super pictures especially G. stipitata tizuensis thanks for posting.
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Wow Rudi what a pretty G. angustifolia seedling!
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I'm not sure if this should be here as I think it's an autumn flowering Gentian but it's still summer (or what passes for it in these parts).
I can claim no skill at all for this, it's one of 6 autumn flowering Gentians I bought over the last few weeks to give some colour to an ericaceous bed I've created to try to cure a sick Camellia. I know next to nothing about growing them but I'm becoming quite besotted>
Gentiana 'Strathmore'
Further research tells me that 'Strathmore' was a sport from Gentiana 'Inverleith'
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David has just shown an autumn flowering gentian. Here is a spring one. Gentiana acaulis or maybe angustifolia.
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Gentiana paradoxa grown from seed many years ago. They are not identical so I am not sure if they pure or hybrids.
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Now flowering in the mountains:
Gentiana asclepiadea in 1500 m
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Hello David, you are correct Gentian Strathmore was a sport from G. Inverleith as it is known in Horticulture we produced it first in 1986 named it after the Valley of Strathmore where we live and sold many at Glamis castle home of the earl of Strathmore it was one of the first really pale blue commercial gentian. cheers Ian the Christie kind.
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Many thanks for that Ian, I love to learn the history of plants. I bought mine from Ray Brown at Plant World here in Newton Abbot and it had one flower out when I bought and the colour sold it to me. Since I photographed it the weather here has been deplorable and the lack of sun has provided some darker flowers. Nice plant, I love it.
Here's another of my summer/autumn flowerers Gentiana 'Serenity'. I must have been having a bad photography day today, sorry about the fuzzy close up.
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Now flowering in the mountains:
Gentiana asclepiadea in 1500 m
Flowering in the garden...at 0 m. ;)
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I have enjoyed this thread on gentians, thank you all for sharing nice pictures and interesting information. We have had a very wet summer, and our summer-flowering gentians have never bloomed so well. What surprises me is that they do not seem to mind the almost complete lack of sunshine for three months or so. The G. asclepiadea has grown into a sizeable clump after six or so years in its current position, at elevation of 5 m, by the way. The G. dahurica in the second picture always does well, but never quite like this year, same for the G. lutea in the third picture; a few years since that bloomed last. The last two pictures are of the same plant, I am not sure which, possibly a G. paradoxa? It has thin, wiry stems about 20 cm (8") and quite large flowers with attractive silvery dots. The one in the picture had a single-flowered heat, but some heads have at least three flowers.
Knud
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Another one of mine Gentiana x macaulayi. According to G H Berry (1951) this is a cross between G sino-ornata and G farreri but it wasn't known which was the seed parent.
By the way, the slug is no more!
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Knud, your unknown gentian looks like paradoxa. If it has many 6-7 petal flowers it is true.
(http://cs4167.vkontakte.ru/u6450879/45874243/x_f4265f8d.jpg)
(http://cs10665.vkontakte.ru/u6450879/97775188/x_5eb90cb7.jpg)
Not very rare but my own victory. For many years I tried to get G. asclepiadea rosea and alba. And this year some seedlings shown pink and white flowers. I am happy even with small plants.
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Lovely pink Olga.
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Knud, your unknown gentian looks like paradoxa. If it has many 6-7 petal flowers it is true.
Thank you, Olga. As I remember, most of the flowers had five petals. I went out to check, but the flowers have now finished, I will check next year.
I like your G. asclepiadeas, especially the pink. I have a couple of white ones, and they are much less vigorous than the blue one.
Now an autumn flowering gentian has started blooming, G. 'Gunvor'.
Knud
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Very nice Knud. Is 'Gunvor' a new hybrid I haven't heard of it before.
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Very nice Knud. Is 'Gunvor' a new hybrid I haven't heard of it before.
Exactly what I was thinking.... I remember that Knud told us the history of Meconopsis 'Gunvor' ....
http://www.srgc.org.uk/smf/index.php?topic=5740.msg191442#msg191442 .... I wonder if there is a connection with this gentian....... :)
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Some in flower now. They came through yesterdays gales.
Gentiana 'Gellerhard'
G. stevenagensis 'Bernardii'
G. ''Ishu Zuki' close up
The above is what I have on the label but it is probably Gentiana scabra ssp. ishuzuki - can anyone help with this.
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G. 'Ishu Zuki'
or Gentiana scabra ssp. ishuzuki
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Very nice Knud. Is 'Gunvor' a new hybrid I haven't heard of it before.
Exactly what I was thinking.... I remember that Knud told us the history of Meconopsis 'Gunvor' ....
http://www.srgc.org.uk/smf/index.php?topic=5740.msg191442#msg191442 .... I wonder if there is a connection with this gentian....... :)
Many thanks for the Link Maggi.
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G. 'Ishu Zuki'
or Gentiana scabra ssp. ishuzuki
I gotta have a pink one ;D Pic of an example at an AGS Show http://www.alpinegardensociety.net/discussion/atshows//Loughborough+Autumn+Show/299/?page=2
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That super photo by Jon Evans is of a plant from our chum "The Butcher", Alan Newton..... I must ask him where he got it. :D
It's pretty.... but I can't see past the blues really.
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That super photo by Jon Evans is of a plant from our chum "The Butcher", Alan Newton..... I must ask him where he got it. :D
It's pretty.... but I can't see past the blues really.
This one came from Anthony when I picked up a couple of troughs from him last year. I think it's from Edrom but they don't have it listed at the moment.
I'm like you Maggi, Gentians are blue. I probably wouldn't have bought this from a nursery though its quite nice. My collection of Autumn flowering Gentians has this pink one and a white one which my wife persuaded me to get :-\ The rest are blue.
Should have some more photos in a week or so.
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Very nice Knud. Is 'Gunvor' a new hybrid I haven't heard of it before.
Thank you, David. It is an old hybrid (certainly from before 1997/98 when I got it), but it has not been formally registered with that name. And you are right, Maggi, it is the same lady. Gunvor and Jostein Øverås selected this plant from seeds of Gentiana sino-ornata hybrids obtained from Jack Drake. They sold it under the name Gentiana 'Gunvor' from their little nursery for a number of years, and I would think is blooms in many Norwegian gardens right now. It was selected for being floriferous with large flowers of good colour, and it starts blooming relatively early (not a disadvantage in here).
Knud
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The last of my small collection of autumn!! flowering Gentians to flower, Gentiana 'Eugens Allerbesta' Sorry for the pretty poor close up it was my fourth attempt and couldn't get it in focus.