Ulmus × hollandica var. insularum Contents Description Pests and...
U. alata (Winged elm)U. americana (American elm)U. americana var. floridana (Florida elm)U. bergmanniana (Bergmann's elm)U. bergmanniana var. bergmannianaU. bergmanniana var. lasiophyllaU. castaneifolia (Chestnut-leafed or multinerved elm)U. changii (Hangzhou elm)U. changii var. changiiU. changii var. kunmingensis (Kunming elm)U. chenmoui (Chenmou or Langya Mountain elm)U. chumliaU. crassifolia (Cedar or Texas cedar elm)U. davidiana (David or Father David elm)U. davidiana var. davidianaU. davidiana var. japonica (Japanese elm)U. elongata (Long raceme elm)U. gaussenii (Anhui or hairy elm)U. glabra (Wych or scots elm)U. glaucescens (Gansu elm)U. glaucescens var. glaucescensU. glaucescens var. lasiocarpa (hairy-fruited glaucescent elm)U. harbinensis (Harbin elm)U. ismaelisU. laciniata (Manchurian cut-leaf or lobed elm)U. laciniata var. nikkoensis (Nikko elm)U. laevis (European white elm)U. laevis var. celtideaU. laevis var. parvifoliaU. laevis var. simplicidensU. lamellosa (Hebei elm)U. lanceifolia (Vietnam elm)U. macrocarpa (Large-fruited elm)U. macrocarpa var. glabraU. macrocarpa var. macrocarpaU. mexicana (Mexican elm)U. microcarpa (Tibetan elm)U. minor (Field elm)U. minor subsp. minorU. minor var. italicaU. parvifolia (Chinese or lacebark elm)U. parvifolia var. coreana (Korean elm)U. prunifolia (Cherry-leafed elm)U. pseudopropinqua (Harbin spring elm)U. pumila (Siberian elm)U. rubra (Slippery elm)U. serotina (September elm)U. szechuanica (Szechuan (Sichuan) or red-fruited elm)U. thomasii (Rock or cork elm)U. uyematsui (Alishan elm)U. villosa (Cherry-bark or marn elm)U. wallichiana (Himalayan or kashmir elm)U. wallichiana subsp. wallichianaU. wallichiana subsp. xanthodermaU. wallichiana var. tomentosaU. davidiana var. japonica × U. minorU. × arbusculaU. × arkansanaU. × brandisianaU. × diversifoliaU. × hollandica (Dutch elm)U. × hollandica var. insularumU. × intermediaU. × mesocarpaAmerican LibertyAscendensAugustineAureaBeaverlodgeBeebe's WeepingBrandonBurgoyneJFS Prince II = Colonial SpiritCollegeColumnarisCreole QueenDeadfreeDelawareExhibitionFioreiFlick's SpreaderFolia Aurea VariegataHinesIncisaIndependenceIowa StateJacksonJeffersonKimleyKlehmiiL'AssomptionLake CityLewis & ClarkLittlefordMaineMarkhamMiller ParkMinneapolis ParkMolineMordenNew HarmonyNigricansPatmorePendulaPenn TreatyPrincetonPyramidataQueen CitySheyenneSkinner UprightSt. CroixStarValley ForgeVariegataVaseWashingtonBrazos RimA-1A. Ross Central Park = Central Park SplendorBlizzardBSNUPF = EverclearBurgundyBurnley SelectCatlinChessinsChurchyardCork BarkD.B.ColeDrakeDynastyEd WoodElsmoEmer I = AthenaEmer II = AlleeEmerald PrairieFrostyGarden City CloneGeishaGloryGolden ReyHallelujahHarzam = Harrison™HokkaidoJade EmpressKing's ChoiceLittleleafLois HoleMatthewMillikenNire-keyakiOhioOrange RibbonPathfinderPendensPrairie ShadePrince RichardRed FallSabamikiSageiSeijuSelect 380SempervirensSmall FryeState FairStone's DwarfTaiwanThe ThinkerToddTrue GreenUPMTF = BosqueWare'sYarralumlaYatsubusaZettler = HeritageUlmus parvifolia f. lanceolataAureovariegataColoransHelenaOrnataPendulaPunctataUrticifoliaAdemuzAlbo-DentataAmplifoliaArgenteo-VariegataAtiniaAtinia PyramidalisAtinia VariegataBiltiiChristine BuismanConcavaefoliaCoritanaCretensisCucullataCucullata VariegataDehesa de AmanielDehesa de la VillaDicksoniiDijkwelErectaFolia Alba-PunctataGlandulosaGoodyeriHoersholmiensisHolmstruphHunnybuniiHunnybunii pseudo-StrictaLaciniataLanuginosaMajadahondaMicrophylla PendulaMicrophylla PurpureaMicrophylla RubraMonumentalisPendulaPicturataPlotiiPropendensPunctataPurpurascensPurpureaRetiroRevertiRugosaRueppelliiSarniensisSchuurhoekSilvery GemSowerbyiStrictaSuberosaUmbraculifera GracilisUmbraculiferaViminalisViminalis AureaViminalis BetulaefoliaViminalis GracilisViminalis IncisaViminalis MarginataViminalis PendulaViminalis PulverulentaViminalis StrictaVirgataWebbianaDiscoveryFreedomJacanJFS-Bieberich = Emerald SunshineMitsui CentennialProspectorRepertaResedaThomsonValidationAnsaloniAureaAurescensChinkotaDropmoreDwarf WeeperGreen KingHansenHarbinManchuMauroMr. BuzzPark RoyalPendulaPinnato-ramosaPoort BultenPusztaPyramidalis FioreiZhonghua JinyeLace ParasolAlbo-VariegataAustralisCamperdowniiCebennensisConcavaefoliaCornutaCorylifolia PurpureaCorylifoliaDovaeiFastigiata MacrophyllaFastigiata StrictaFastigiata VariegataFirmaFlavaGiganteaGittishamGrandidentataHolgeriHorizontalisInsularisLatifoliaLatifolia AureaLatifolia Aureo-VariegataLatifolia NigricansLuteo VariegataLutescensMacrophyllaMaculataMinorNanaNigraNitidaOblongataPendula MacrophyllaPendula VariegataPyrenaicaRamulosaSpectabilisSuperbaTomentosaAndrossowiiAmsterdamArnoCathedralClusiusColumellaDen HaagDodoensEscaillardFiorenteFrontierFuente UmbriaHomesteadKaragatchLobelMorfeoMorton Glossy = TriumphMorton Plainsman = VanguardMorton Red Tip = Danada CharmMorton Stalwart = CommendationMorton = AccoladeNanguen = LuteceNew HorizonPatriotPlantynPlinioRagethRebellaRebonaRecertaRegalRepuraReveraSan ZanobiSapporo Autumn GoldSapporo Gold 2StavastToledoUrbanWanoux = VadaAlbaAngustifoliaBalderBea SchwarzBelgicaBlandfordCanadian GiantCicestriaCinereaCommelinDampieriDauvesseiDaveyiDumontElegantissimaEleganto-VariegataEtruscaFastigiataFjerrestadFolia RhomboideaFrejaFulvaGaujardiiGroeneveldHaarlemensisKlemmerLokeMacrophylla AureaMajorMicrophyllaModiolinaMuscaviensisOdinPioneerPitteursSerpentinaSmithiiSuperbaTricolorTyrVegetaViminalisViscosaWentworthii PendulaWredeiYpreauCoolshadeFremontImproved CoolshadeLincolnRosehillWillisU. okanaganensis
Hybrid elmUlmus
Channel IslandsCotentinFranceRichensJeffersMcClintockovate'Vegeta'Huntingdon ElmpetioleaxillarylaminaDutch elm disease
Ulmus × hollandica var. insularum | |
|---|---|
Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae |
| Genus: | Ulmus |
Trinomial name | |
Ulmus × hollandica var. insularum Richens | |
Ulmus × hollandica var. insularum was recognized as a biometrically distinct population of U. × hollandica endemic to all the Channel Islands and the Cotentin peninsula of France by Richens and Jeffers in 1975.[1] The tree had been treated within U. montana (:glabra) until McClintock correctly assigned it to U. × hollandica.[2]
Contents
1 Description
2 Pests and diseases
3 Cultivation
4 References
Description
Var. insularum has an open canopy comprising irregular branching; the leaves are broadly ovate, < 8.5 cm long by 6 cm broad. The tree is distinguished from U. × hollandica and its most common cultivar, 'Vegeta', the Huntingdon Elm, by its longer (8–12 mm) petiole, greater foliar asymmetry, and more extensive axillary tufts on the lower surface of the lamina. Richens did not investigate the flowers and fruit.
Pests and diseases
The tree is very susceptible to Dutch elm disease.
Cultivation
The current status of the tree in the Channel Islands following the introduction of Dutch elm disease is not (2015) recorded.
References
^
Richens, Richard Hook (1984). "Ulmus × hollandica Miller var. insularum Richens, var. nov" (PDF). Watsonia. 15: 105–108..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
^ McClintock, D. (1975). The wild flowers of Guernsey, p.149. London.
