Reference health
The delimitation and taxonomic position of the tropical African generaLeptactina andDictyandra (Rubiaceae)
6/6 checkable references clean · checked 2026-09-27
Every reference with a DOI or an arXiv id 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.
13 with no DOI or arXiv id: not checked. A reference deposited without a DOI is checked only when it names an arXiv id, under that id’s DataCite DOI. The rest are never matched by title or guessed at; they stay outside the checked set, and this line says so.
The 6 checked references that resolve
resolves10.1111/j.1438-8677.1966.tb00207.x
REMARKS ON THE POSITION, THE DELIMITATION AND THE SUBDIVISION OF THE RUBIACEAE
resolves10.2307/4110002
Studies in Tarenna Sensu Lato (Rubiaceae subfam. Cinchonoideae) for Part 2 of 'Flora of Tropical East Africa: Rubiaceae'
resolves10.1002/j.1537-2197.1974.tb14037.x
MORPHOLOGY AND DISTRIBUTION OF COLLETERS AND CRYSTALS IN RELATION TO THE TAXONOMY AND BACTERIAL LEAF NODULE SYMBIOSIS OF PSYCHOTRIA (RUBIACEAE)
resolves10.2307/3667775
The Hypobathreae (Rubiaceae - Ixoroideae). 1. Delimitation and Division of a New Tribe
The 13 references with no DOI or arXiv id, listed, not checked
no DOI — not checkedBremekamp, C. E. B., 1934: A monograph of the genusPavetta L. ? Repert. Spec. Nov. Regni Veg.37, 1?208.
no DOI — not checkedCorner, E. J. H., 1976: The Seeds of Dicotyledons. Volume I, ix + 311 p. ? Cambridge: Cambridge University Press.
no DOI — not checkedHallé, F., 1967: Etude biologique et morphologique de la tribu des Gardeniées (Rubiacées). ? Mém. O.R.S.T.O.M.22, 146 p., 40 pl., 5 pl. phot.
no DOI — not checked?, 1978: Tropical Trees and Forests. An Architectural Analysis. xi + 441 p., 111 Fig. ? Berlin: Springer-Verlag.
no DOI — not checkedHallé, N., 1970: Famille des Rubiacées (2e partie). ? Flore du Gabon17, 335 p.
no DOI — not checkedHiern, W. P., 1877: Order LXX.Rubiaceae. ? InOliver, D.: Flora of Tropical Africa3, 33?247.
no DOI — not checkedHooker, J. D., 1873:Rubiaceae. ? InBentham, G., Hooker, J. D. ? Genera Plantarum2 (1), 7?151. ? London.
no DOI — not checked? 1980b: Bijdragen tot de classificatie van deIxoroideae en tot de revisie vanTricalysia s. l. (Rubiaceae). Part1, xxviii + 128 p., 13 Fig. ? Gent & Meise. ? Unpublished thesis.
no DOI — not checked? 1980c: Bijdragen tot de classificatie van deIxoroideae en tot de revisie vanTricalysia s.l. (Rubiaceae). Part3, 131 pl. ? Gent & Meise. ? Unpublished thesis.
no DOI — not checked?, 1981a: Studies in tropical AfricanRubiaceae. II. 5. A survey ofArgocoffeopsis. ? Bull. Nat. Plantentuin Belg.51, 361?370.
no DOI — not checked?, 1981b: Studies in tropical AfricanRubiaceae. II. 6. A revision ofCalycosiphonia. ? Bull. Nat. Plantentuin Belg.51, 370?377.
no DOI — not checkedSchumann, K., 1891:Rubiaceae. InEngler, A., & Prantl, K.: Die natürlichen Pflanzenfamilien4 (4), 1?156, 48 Figs.
no DOI — not checked?, 1976:Rubiaceae (part 1) in Flora of Trop. East Afr., 414 p., 59 Fig. ? London: Crown Agents for Oversea Governments and Administrations.
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