Reference health
What does morphology tell us about orchid relationships?—a cladistic analysis
3 of 63 checkable references need attention · checked 2026-09-28
At the dated check, the references listed below either did not resolve in Crossref or DataCite, or carried a retraction notice. Each one is shown with the registry record that put it there.
98 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
References needing attention
does not resolve to a known work10.2307/2442738
does not resolve to a known work10.2307/2446204
does not resolve to a known work10.2307/2446176
The 60 checked references that resolve
resolves10.1080/00173138009424982
Pollen Morphology of the Tribe Neottieae and its Impact on the Classification of the Orchidaceae
resolves10.1111/j.1558-5646.1988.tb02497.x
THE LIMITS OF AMINO ACID SEQUENCE DATA IN ANGIOSPERM PHYLOGENETIC RECONSTRUCTION
resolves10.1111/j.1095-8339.1829.tb00158.x
XXXV. On the Organs and Mode of Fecundation in Orchideae and Asclepiadeae.
resolves10.1007/BF00388107
Orchid embryology: Pollen tetrads of Epidendrum scutella in the anther and on the stigma
resolves10.1111/j.1558-5646.1985.tb00420.x
CONFIDENCE LIMITS ON PHYLOGENIES: AN APPROACH USING THE BOOTSTRAP
resolves10.1002/j.1537-2197.1991.tb14478.x
A SYSTEMATIC STUDY OF ENDOTHECIAL THICKENINGS IN THE ORCHIDACEAE
resolves10.1007/BF00983537
Gynostemium structure and relationships of theCorallorhizinae (Orchidaceae: Epidendroideae)
resolves10.1080/00378941.1855.10826036
Recherches Sur La Nature Du Faux Bulbe Des Ophrydées Ou<i>Ophrydo-Bulbe</i>
resolves10.1111/j.1095-8339.1993.tb00331.x
Phylogenetic position of Apostasia and Neuwiedia (Orchidaceae)
resolves10.1111/j.1756-1051.1987.tb00964.x
Developmental studies in orchid flowers I: Epidendroid and vandoid species
resolves10.1111/j.1756-1051.1987.tb00965.x
Developmental studies in orchid flowers II: Orchidoid species
resolves10.1111/j.1756-1051.1988.tb01721.x
Developmental studies in orchid flowers III: Neottioid species
resolves10.1111/j.1756-1051.1991.tb01818.x
Floral morphology of southern African Orchideae. I. Orchidinae
resolves10.4102/abc.v13i3/4.1325
Taxonomic studies in the Disinae. VI. A revision of the genus <i>Herschelia</i>
resolves10.1111/j.1095-8339.1984.tb01000.x
Stegmata in Orchidales: character state distribution and polarity
resolves10.1002/j.1537-2197.1995.tb12682.x
Character analysis of the seed coat in Spiranthoideae and Orchidoideae, with special reference to the diurideae (ORCHIDACEAE)
resolves10.1007/BF00940796
Ontogenesis of monad pollen inPterostylis plumosa (Orchidaceae, Neottioideae)
resolves10.1111/j.1756-1051.1988.tb00491.x
Velamen radicum micromorphology and classification of Orchidaceae
resolves10.1111/j.1095-8339.1974.tb01982.x
The relationships of the Apostasiaceae on the basis of floral anatomy
resolves10.1111/j.1095-8339.1981.tb00969.x
The diversity of stomatal development in Orchidaceae subfamily Orchidoideae
resolves10.1080/00173139309436416
Morphogenesis of the sporoderm in<i>Polystachia pubescens</i>(Orchidaceae)
resolves10.1111/j.1095-8339.1993.tb01913.x
Apostasiads, systematic anatomy, and the origins of Orchidaceae
resolves10.1111/j.1095-8339.1993.tb00336.x
Comparative vegetative anatomy and systematics of Spiranthoideae (Orchidaceae)
resolves10.1111/j.1438-8677.1965.tb00191.x
THE PLACE OF<i>EPIPOGIUM</i>IN THE SYSTEM OF<i>ORCHIDALES</i>
resolves10.2307/1218336
STOMATAL DEVELOPMENT IN LUDISIA DISCOLOR (ORCHIDACEAE): MESOPERIGENOUS SUBSIDIARY CELLS IN THE MONOCOTYLEDONS
resolves10.1111/j.1095-8339.1979.tb02185.x
Subsidiary cells in the Orchidaceae: their general distribution with special reference to development in the Oncidieae
resolves10.1080/00173138709428903
Mechanisms of Pollen Aggregation into Pollinia in<i>Epidendrum Ibaguense</i>(Orchidaceae)
The 98 references without a DOI — listed, not checked
no DOI — not checkedCladistic relationships of the slipper orchids (Cypripedioideae: Orchidaceae) from congruent morphological and molecular data
no DOI — not checkedOrchidaceae
no DOI — not checkedVegetative architecture of Eria
no DOI — not checkedThe relationships of the slipper orchids (subfamily Cypripedioideae, Orchidaceae)
no DOI — not checkedThe size of the Orchidaceae and the systematic distribution of epiphytic orchids
no DOI — not checkedProceedings of the Eighth World Orchid Conference
no DOI — not checkedüber das Vorkommen eines Schleuderorgane in den Früchten verschiedener Orchideen
no DOI — not checkedRumphia
no DOI — not checkedRudolph Schlechter. Die Orchideen
no DOI — not checkedProdromus Florae Novae Hollandiae
no DOI — not checkedA phylogenetic analysis of the Orchidaceae
no DOI — not checkedL'ultrastructure des grains de pollen d'orchidace´es
no DOI — not checkedRecherches sur les cellules‐me`res des microspores des Orchide´es
no DOI — not checkedContribution a` l'e´tude cytotaxonomique des Orchide´es
no DOI — not checkedAspects infrastructuraux de la maturation des grains de pollen de quelques Orchidace´es
no DOI — not checkedSeed morphology and phylogeny in subtribe Catasetinae (Orchidaceae)
no DOI — not checkedMonocotyledons: systematics and evolution
no DOI — not checkedThe occurrence and kinds of vessels in the Orchidaceae
no DOI — not checkedThe origin and early differentiation of the Orchidaceae
no DOI — not checkedOrganographische Betrachtungen über einige Pflanzen aus dem Bereiche der Monocotyledoneae epigynae
no DOI — not checkedStigma morphology of the orchids
no DOI — not checkedOn the various contrivances by which British and foreign orchids are fertilized by insects
no DOI — not checkedMonograph of the Apostasieae (Orchidaceae)
no DOI — not checkedThe orchids: natural history and classification
no DOI — not checkedFeatures of pollinaria and orchid classification
no DOI — not checkedRecent advances in orchid phylogeny
no DOI — not checkedCladistic analysis of the Orchidaceae: a commentary
no DOI — not checkedThe major clades of the Orchidaceae—Epidendroideae
no DOI — not checkedThe Neottieae in orchid classification
no DOI — not checkedThe Spiranthoideae: grade or subfamily?
no DOI — not checkedPhylogeny and classification of the orchid family
no DOI — not checkedMonocotyledons: systematics and evolution
no DOI — not checkedConical silica bodies in Eria javanica
no DOI — not checkedViscarium, a term for the glue‐bearing area of the rostellum
no DOI — not checkedPollen morphology and plant taxonomy. II. Notes on some monocotyledonous pollen types
no DOI — not checkedGuide to the parsimony jackknifer
no DOI — not checkedDie Dactylorchisgruppe der Ophrydineen
no DOI — not checkedEntwicklung, Axen und Blätter einheimischer Orchideen. IV
no DOI — not checkedEntwiscklungsgeschichte der Axen der einheimischen Orchideen und ihre Physiologie und Biologie. III
no DOI — not checkedNONA and PIWE. Ver. 2. American Museum of Natural History
no DOI — not checkedLe´s e´late`res des Sarcanthinae et additions aux Orchidaceae de la Nouvelle‐Cale´donie
no DOI — not checkedA taxonomic review of the Japanese Lecanorchis (Orchidaceae)
no DOI — not checkedBeiträge zur Organographie der Orchideenblüte
no DOI — not checkedGrowth habits of monocotyledons: variations on a theme
no DOI — not checkedUeber den anatomischen Bau und das Aufspringen der Orchideen früchte
no DOI — not checkedThe structure of pollen wall and its relation to pollen aggregation in Cymbidium goeringii (Rchb. f.) Rchb. f
no DOI — not checkedThe families of flowering plants
no DOI — not checkedPreliminary study of the pollen tetrads in the Orchidaceae
no DOI — not checkedThe types of pollen tetrads and their formation in some species of Orchidaceae in Japan
no DOI — not checkedThe phylogenetic relationships of Orchidoideae and Spiranthoideae (Orchidaceae) as inferred from rbcL plastid sequences
no DOI — not checkedEmbryosac development and chromosome number in Vanilla roscheri from Inhaca Island
no DOI — not checkedLavarack P. S.1971.The taxonomic affinities of the Neottioideae. Ph.D. dissertation University of Queensland Saint Lucia Queensland.
no DOI — not checkedBolbophyllum bracteolatum
no DOI — not checkedThe genera and species of orchidaceous plants
no DOI — not checkedThe vegetable kingdom
no DOI — not checkedThe vegetable kingdom
no DOI — not checkedMalguth R.1901.Biologische Eigenthümlichkeiten der Früchte epiphytischer Orchideen. Ph.D. dissertation Breslau.
no DOI — not checkedUeber das System der Orchidaceae
no DOI — not checkedüber die Verteilung der Merkmale innerhalb der Orchidaceae – Monandrae
no DOI — not checkedPollen morphology of the Cypripedioideae and the Apostasioideae (Orchidaceae)
no DOI — not checkedAnatomy and morphology of the articulation between ovary and pedicel in Pleurothallidinae (Orchidaceae)
no DOI — not checkedA terrestrial origin for the Orchidaceae suggested by a phylogeny inferred from ndhF chloroplast gene sequences
no DOI — not checkedEvolution in the number and position of fertile anthers in Orchidaceae inferred from ndhF chloroplast gene sequences
no DOI — not checkedSeed coat formation in Apostasia nipponica
no DOI — not checkedAnatomy and morphology of the subterranean organs in some Orchidaceae
no DOI — not checkedKaryomorphological observations of Apostasia nuda and Neuwiedia veratrifolia (Apostasioideae) Orchidaceae
no DOI — not checkedThe genus Pteroceras (Orchidaceae) ‐ a taxonomic revision
no DOI — not checkedGrundzüge einer vergleichenden Morphologie der Orchideen
no DOI — not checkedDie natürlichen Pflanzenfamilien
no DOI — not checkedOrchid biology, reviews and perspectives
no DOI — not checkedE´tude sur la nature, l'organisation et la structure des bulbes des Ophryde´es
no DOI — not checkedThe gynostemium of the neottioid orchids
no DOI — not checkedThe families of the monocotyledons
no DOI — not checkedOn the various contrivances by which pollinia are attached to viscidia
no DOI — not checkedOntogeny and phylogeny in the Orchidaceae
no DOI — not checkedOrchid biology, reviews and perspectives, IV
no DOI — not checkedReichenbach H. G.1852.De pollinis orchidearum genesi ac structura et de orchideis in artem ac systema redigendis. Ph.D. dissertation.F. Hofmeister Leipzig.
no DOI — not checkedUeber das System der Orchideen
no DOI — not checkedDe orchideis europaeis annotationes
no DOI — not checkedMorphologische, embryologische und systematische Untersuchungen an Burmanniaceae und Corsiaceae (Mit Ausblick auf die Orchidaceae – Apostasioideae)
no DOI — not checkedPalynologische Untersuchungen zur systematischen Stellung der Apostasiaceae
no DOI — not checkedUntersuchungen an Orchideenpollinien unter besonderer Berücksichtigung ihrer Feinskulpturen
no DOI — not checkedOrchid genera in Thailand. VIII. Bulbophyllum Thou
no DOI — not checkedKaryomorphological studies on Goodyera and its allied genera in Orchidaceae
no DOI — not checkedMicrospermae. Israel Program for Scientific Translations, Jerusalem
no DOI — not checkedAfhandling om Orchidernes slaegter och deras systematiska indelning
no DOI — not checkedSystema Orchidalium
no DOI — not checkedSeed morphology in Orchidaceae I. Dactylorchis, Orchis, Ponerorchis, Chondradenia and Galeorchis
no DOI — not checkedSeed morphology in Orchidaceae II. Tribe Cranichideae
no DOI — not checkedSeed morphology in Orchidaceae III. Tribe Neottieae
no DOI — not checkedNotes sur l'embryoge´nie de quelques Orchide´es
no DOI — not checkedLes pollens compose´s. L'example des Mimosace´es
no DOI — not checkedEmbryoge´nie compare´e et blastoge´nie chez les Orchidaceae‐Monandrae
no DOI — not checkedOn polystely in roots of Orchidaceae
no DOI — not checkedScanning electron microscope studies of orchid pollen
no DOI — not checkedOntogenie von Pollen, Massulae und Pollinien bei den Orchideen
no DOI — not checkedOrchid biology, reviews and perspectives, IV
no DOI — not checkedZiegler B.1981.Mikromorphologie der Orchidaceen‐samen unter Berücksichtigung taxonomischer Aspekte. Ph.D. dissertation.Ruprecht‐Karls Universität Heidelberg.
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