Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 56 checked references that resolve
resolves10.1016/j.flora.2014.07.001Nectar production and carbohydrate composition across floral sexual phases: contrasting patterns in two protandrous Aconitum species (Delphinieae, Ranunculaceae)
resolves10.1007/s00709-015-0794-5Comparative floral spur anatomy and nectar secretion in four representatives of Ranunculaceae
resolves10.1007/BF00379123Partial preference of insects for the male flowers of an annual herb
resolves10.1016/j.flora.2011.02.003Intraplant variation in nectar traits in Helleborus foetidus (Ranunculaceae) as related to floral phase, environmental conditions and pollinator exposure
resolves10.3732/ajb.94.4.674Male‐biased nectar production in a protandrous herb matches predictions of sexual selection theory in plants
resolves10.1007/s00606-011-0447-xPollen and ovule production, floral nectary structure, and nectar secretion dynamics in tristylous Lythrum salicaria L.
resolves10.2307/3546151Discrimination by Pollen-Collecting Bumblebees among Differentially Rewarding Flowers of an Alpine Wildflower, Campanula rotundifolia (Campanulaceae)
resolves10.1007/BF01322777The modified stomata of the floral nectary ofVicia faba L. 1. Development, anatomy and ultrastructure
resolves10.1007/s004250050325Nectar-carbohydrate production and composition vary in relation to nectary anatomy and location within individual flowers of several species of Brassicaceae
resolves10.5586/aa.2012.041Flowering, nectar secretion, pollen shed and insect foraging on Aquilegia vulgaris L. (Ranunculaceae)
resolves10.2307/2398776Reproductive Structures and Evolution in Ludwigia (Onagraceae). III. Vasculature, Nectaries, Conclusions
resolves10.2307/2398993Evolution and Systematics of the Onagraceae: Floral Anatomy
resolves10.1093/aob/mcm002Ultrastructural Evidence for a Dual Function of the Phloem and Programmed Cell Death in the Floral Nectary of Digitalis purpurea
resolves10.1111/j.1365-2311.1985.tb00530.xContrasting movement patterns of nectar‐collecting and pollen‐collecting bumble bees (Bombus terricola) on fireweed (Chamaenerion angustifolium) inflorescences
resolves10.1890/08-0241.1INVISIBLE FLORAL LARCENIES: MICROBIAL COMMUNITIES DEGRADE FLORAL NECTAR OF BUMBLE BEE‐POLLINATED PLANTS
resolves10.1086/524113Flower Structure and Nectar Availability in <i>Aloe greatheadii</i> var. <i>davyana</i>: An Evaluation of a Winter Nectar Source for Honeybees
resolves10.1371/journal.pone.0056917Among-Population Variation in Microbial Community Structure in the Floral Nectar of the Bee-Pollinated Forest Herb Pulmonaria officinalis L
resolves10.3732/ajb.89.10.1588Temporal changes in floral nectar production, reabsorption, and composition associated with dichogamy in annual caraway (<i>Carum carvi</i>; Apiaceae)
resolves10.2307/1941289A Technique for Sampling and Measuring Small Amounts of Floral Nectar
resolves10.2307/2805200A New Taxonomy for Epilobium angustifolium L.(Onagraceae)
resolves10.1023/A:1011463520398Reproductive biology and effect of nectar robbing on fruit production in Macleania bullata (Ericaceae)
resolves10.1086/319581Nectar Secretion, Reabsorption, and Sugar Composition in Male and Female Flowers of <i>Cucurbita pepo</i>
resolves10.1111/boj.12009Four o'clock pollination biology: nectaries, nectar and flower visitors in Nyctaginaceae from southern South America
resolves10.1093/aob/mcm268The Floral Nectary of Hymenaea stigonocarpa (Fabaceae, Caesalpinioideae): Structural Aspects During Floral Development
resolves10.1007/s00606-011-0474-7Synchronized protandry and hermaphroditism in a tropical secondary forest tree, Schefflera heptaphylla (Araliaceae)
resolves10.1006/anbo.2000.1331Nectar Sugar Composition in Relation to Pollination Syndromes in Sinningieae (Gesneriaceae)
resolves10.1007/BF00378842Nectar production rates of Asclepias quadrifolia: causes and consequences of individual variation
resolves10.1007/BF02858528Reproductive versus extra-reproductive nectaries—historical perspective and terminological recommendations
resolves10.2307/2389183Patterns in Floral Nectar Characteristics of Some Bird-Visited Plant Species From Costa Rica
resolves10.1093/aob/mcq246Comparative anatomy of the nectary spur in selected species of Aeridinae (Orchidaceae)
resolves10.1007/s00606-014-1152-3Nectaries and male-biased nectar production in protandrous flowers of a perennial umbellifer Angelica sylvestris L. (Apiaceae)
resolves10.1086/501140Ivy (<i>Hedera helix</i>L.) Flower Nectar and Nectary Ecophysiology
resolves10.1093/aob/mcj027Floral Nectar Production and Nectary Anatomy and Ultrastructure of Echinacea purpurea (Asteraceae)
resolves10.1111/boj.12071Reproductive biology of the Red List species<i>Polemonium caeruleum</i>(Polemoniaceae)
The 5 references without a DOI — listed, not checked
no DOI — not checkedHandbook of Experimental Pollination Biology
no DOI — not checkedThe Biology of Nectarines
no DOI — not checkedNotes on the method to investigate nectar secretion rate in flowers
no DOI — not checkedNectary structure in the dichogamous flowers of Polemonium caeruleum L. (Polemoniaceae)
no DOI — not checkedSzklanowskaK.&DenisowB.(1999) Biologia kwitnienia i wartość pyłku wierzbówki kiprzycy (Chaemenerion angustifoliumScop. syn.Epilobium angustifoliumL.). VIII Ogólnopol. Zjazd Nauk. „Hodowla roślin ogrodniczych u progu XXI wieku „AR – Lublin pp.505–507(in Polish).
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