LILIES - RHS Lily Group

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or Cliftonii <strong>Group</strong> in gardening circles, is horticulturally distinct in that it flowers noticeably earlier, in fact one of the earliest of all erythroniums, and in my experience does not have the same propensity to produce stolons. The unique pink E. revolutum is perhaps the most prolific species in Britain, especially in the higher rainfall western side of the country. One can see large drifts in many gardens ranging from the south-west (for example Knightshayes) all the way up to north-western Scotland at Inverewe. As a wild plant it is also widespread in a north-south direction at fairly low altitudes from Vancouver Island to California, and it is very variable. The species is almost entirely seed propagated so named variants are not clonal although some breed true enough and have been given cultivar status. So, we have dark pink ones named ‘Johnsonii’ (this was originally described as a species) and other shades such as ‘Knightshayes Pink’, ‘Pink Beauty’, ‘Rose Beauty’, etc. Species such as this create a dilemma for those assessing the merits of a plant for the AGM. Should the award be given to the entire species encompassing all its variations, even if some might be less pleasing than others, or should only ‘the better’ variants be acknowledged? There is no real answer but the matter can usually be resolved by asking oneself: ‘would I throw out any form of E. revolutum on the grounds that it was inferior?’ In this case I suspect that the answer from most people would be a resounding ‘no way’! This question does not arise in the case of E. hendersonii, another western American species which is more restricted in distribution in southern Oregon and northern California. It varies only a little in the depth of pale lavender-violet of its flowers which have a distinct dark violet eye in the centre, a unique colour combination in the genus. As a result of this comparative uniformity I am unaware of any named cultivars. As with E. revolutum there is little tendency for the bulbs to produce offsets, so seeds are the only practical method of propagation. All the species mentioned so far are from western North America and, quite frankly, that is where the most striking species occur. Of the remaining species from that region one could mention a few other very desirable ones which are easy to cultivate, notably E. oregonum. Although superficially similar to E. californicum (mottled leaves and white flowers, usually with a zone of dark markings in the centre) the two are distinct and a check on the width of the stamen filaments will clarify any uncertainty: slender throughout their length in E. californicum but wide and flattened at the base, tapering to the apex in E. oregonum. For many years there has been in cultivation in Britain a variant known as “Sulphur form”, a pleasing variation with pale sulphur-green flowers. Unfortunately the stock came without an indication of provenance so I was intrigued to find it also in a garden in Oregon and, on enquiring, was told that it was the form from Kelley Butte. Only detailed field studies will shed further light as to whether any botanical 83
Above left, Erythronium umbilicatum flowers more freely in cultivation than its relative E. americanum. Above right, E. caucasicum is a distinctive plant from Caucasia and Iran. Below left, E. tuolumnense has a rapid rate of increase quickly forming clumps, here at Italian Bar, Columbia, California. Below right, E. hendersonii has unique flower colouring here in Jackson Co., Oregon. 84
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LILIES and Related Plants 75 TH ANN
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Lilies and Related Plants Published
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Royal Horticultural Society Lily Gr
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Contents Alisdair Aird by Harris Ho
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Gennady Firsov, PhD, is Senior Rese
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the Lyttel Cup. When I mentioned th
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Dee Simmons and her husband Martyn
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But, now that she is gone, how shou
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Lilium dauricum at Hamatonbetsu on
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Above left, Lilium callosum var. fl
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var. abeanum is a case in point, or
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Two of Derek Fox’s lily cultivars
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18 The lilies of Greece Arne Strid
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The five lilies of Greece. A: Liliu
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The natural distribution of Lilium
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Right, Lilium chalcedonicum, indivi
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gracefully curved, bright lemon yel
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28 A brief history of the RHS Lily
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Greece . . . . . . . . . . S.C. Atc
Page 39 and 40: initiate a programme of chromosone
Page 41 and 42: Faced with this continuing situatio
Page 43 and 44: Hence this review… We are extreme
Page 45 and 46: TITLE AUTHOR PUBLISHER Consider the
Page 47 and 48: TITLE AUTHOR PUBLISHER Lilies Derek
Page 49 and 50: well established. Therefore almost
Page 51 and 52: growing plants in a climate that ha
Page 53 and 54: Lily Year Books The Year Books of o
Page 55 and 56: Institute became more and more conc
Page 57 and 58: Above left, ‘Descant’, Top righ
Page 59 and 60: visitors at New Mill, often summone
Page 61 and 62: A group of North Hybrids sent to Br
Page 63 and 64: 56 Dr A.F. Hayward (1933-2006) Dr T
Page 65 and 66: Lily ‘Connecticut King’, the cu
Page 67 and 68: Lilium regale and asiatic hybrids f
Page 69 and 70: European and Middle Eastern lilies
Page 71 and 72: A group of asiatic hybrids and two
Page 73 and 74: growing in half shade, so I have no
Page 75 and 76: 68 Alisdair Aird Harris Howland wri
Page 77 and 78: 70 On the road in search of lilies
Page 79 and 80: Mount Shasta, rising to 14,162ft wa
Page 81 and 82: iver whose broad meanders we had cr
Page 83: 76 North American Pacific Coast lil
Page 86 and 87: somewhat decadent, in that we parke
Page 88 and 89: Left, Erythronium multiscapoideum f
Page 92 and 93: Above, Erythronium propullans. The
Page 94 and 95: Trumpet lilies Walter Erhardt write
Page 96 and 97: Two beautiful trumpet hybrids. Abov
Page 98 and 99: Commercial lily production in tunne
Page 100 and 101: Table 2: Perth Long-term Averages J
Page 102 and 103: We also use a combination of cow ma
Page 104 and 105: Table 3: Lilium Varieties continued
Page 106 and 107: for making of barragons, a genteel
Page 108 and 109: ulbs soon. I have seen this lily gr
Page 110 and 111: suggestion that White grew or certa
Page 112 and 113: Geographic location The territory o
Page 114 and 115: Left, Fritillaria ruthenica growing
Page 116 and 117: Threatened species As a result of o
Page 118 and 119: Tulipa biebersteiniana in the Fomin
Page 120 and 121: ees and butterflies in the air, and
Page 122 and 123: Above, a large population of gladio
Page 124 and 125: glades at places Berezniki (environ
Page 126 and 127: Dubrava, in upland oakwoods, alder
Page 128 and 129: villages. These include Scilla sibi
Page 130 and 131: The International Lily Registrar Ka
Page 132 and 133: of Wester Ross beyond an ever-chang
Page 134 and 135: Allium angulosum 114 decipiens 114
Page 136 and 137: (Lilium) ‘Prunotto’ 96 pseudoti
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LILIES - RHS Lily Group

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