Reference health
A preliminary cladistic analysis of the genus Vernonia (Vernonieae: Asteraceae)
4 of 40 checkable references need attention · checked 2026-07-22
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.
47 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 work10.2307/2435332
does not resolve to a known work10.2307/2442006
does not resolve to a known work10.2307/2443291
does not resolve to a known work10.2307/2444274
The 36 checked references that resolve
resolves10.1111/j.1095-8339.1873.tb02575.x
Notes on the Classification, History, and Geographical Distribution of Compositae.
resolves10.2307/2806758
Lychnophora (Compositae: Vernonieae), a genus Endemic to the Brazilian Planalto
resolves10.1016/S0031-9422(00)85024-4
Sesquiterpene lactones from two newly-described species of Vernonia: V. jonesii and V. pooleae
resolves10.2307/2407570
Cytogenetics and Affinities of Vernonia (Compositae) from the Mexican Highlands and Eastern North America
resolves10.2307/2418654
Morphological Variation and Species Recognition in the Neotropical Taxon Vernonia arborescens (Compositae)
resolves10.2307/4108992
A Study of the Pollen Morphology of Tropical African and Certain Other Vernonieae (Compositae)
resolves10.1016/0305-1978(75)90060-5
Systematic implications of flavonoids and sesquiterpene lactones in species of Vernonia
resolves10.2307/1222046
<i>ARGYROVERNONIA</i> AND <i>PARALYCHNOPHORA</i>: NEW NAMES IN THE TRIBE VERNONIEAE (ASTERACEAE/COMPOSITAE)
resolves10.2307/1222026
THE ROLE OF HYPOTHESIZED DIRECTION OF CHARACTERS IN THE ESTIMATION OF EVOLUTIONARY HISTORY
resolves10.2307/2418263
An Analysis of the Characters and Relationships of the Tribes Eupatorieae and Vernonieae (Asteraceae)
resolves10.5962/bhl.part.14735
Chemosystematic notes on the Asteraceae. III. Natural subdivisions of the Vernonieae
resolves10.2307/2806378
Taxonomic Considerations of Piptocarpha (Compositae: Vernonieae) and New Taxa in Brazil
resolves10.2307/2806430
New Species and Combinations in Vernonia Sections Leiboldia and Lepidonia (Asteraceae), with a Revisional Conspectus of the Groups
The 47 references without a DOI — listed, not checked
no DOI — not checkedAristeguieta, L., 1963: El genero Oliganthes de Madagascar y su equivalente Americano Pollalesta. — Soc. Venez. Cienc. Nat. 23: 255–289.
no DOI — not checkedAugier, J., Dumerac, M. L., 1951: La phylogénie des composées. — Rev. Sci. 3311: 167–182.
no DOI — not checkedBaker, J. G., 1872: Compositae I. Vernoniaceae. — In Martius, C. F. P. von (Ed.): Flora Brasiliensis 6, pp. 1–179, pl. 1–50.
no DOI — not checkedBentham, G., Hooker, J. D., 1873: Genera Plantarum 2 (1). London.
no DOI — not checkedBlake, S. F., 1936: Lepidonia, a new genus of Vernonieae, with a nomenclatorial note on the name Leiboldia. — J. Washington Acad. Sci. 26: 452–460.
no DOI — not checkedBolick, M. R., 1978: A light and electron microscope study of pollen of the Vernonieae (Compositae). — Ph.D. Thesis, University of Texas, Austin.
no DOI — not checkedBusey, P., 1975: Flora of Panama: Elephantopodinae. — Ann. Missouri Bot. Gard. 62: 873–879.
no DOI — not checkedCassini, H., 1825: Vernoniees. — In Cuvier, G. L., (Ed.): Dictionnaire des sciences naturelles 25, pp. 338–345. Reprinted in King, R. M., Dawson, H. L., (Eds.): Cassini on Compositae. — New York: Oriole Editions.
no DOI — not checkedClonts, J. A., 1972: A revision of Elephantopus and Pseudoelephantopus. — Ph.D.Thesis, Mississippi State University, Starkville, MS.
no DOI — not checkedColeman, J. R., 1968: Chromosome numbers in some Brazilian Compositae. — Rhodora 70: 228–240.
no DOI — not checkedCuatrecasas, J., 1956: Neue Vernonia-Arten und Synopsis der andinen Arten der Sektion Critoniopsis. — Bot. Jahrb. Syst. 77: 52–84.
no DOI — not checkedDe Candolle, A. P., 1836: Composiae. — Prodromus Systematics 5: 4–706.
no DOI — not checkedDillon, M., Turner, B. L., 1982: Chromosome numbers of Peruvian Compositae. — Rhodora 84: 131–137.
no DOI — not checkedEkman, E. L., 1914: West Indian Vernonieae. — Ark. Bot. 13: 1–106.
no DOI — not checkedFaust, W. Z., Jones, S. B., Jr., 1973: The systematic value of trichome complements in a North American group of Vernonia (Compositae). — Rhodora 75: 517–528.
no DOI — not checkedFunk, V. A., 1982: The systematics of Montana (Asteraceae, Helintheae). — Mem. New York Bot. Gard. 36: 1–133.
no DOI — not checkedGleason, H. A., 1906: A revision of the North American Vernonieae. — Bull. New York Bot. Gard. 4: 144–243.
no DOI — not checkedGleason, H. A., 1922: Vernonieae. — North Am. Fl. 33: 52–95.
no DOI — not checkedHumbert, H., 1960: Composées: Vernoniées. — Flore de Madagascar 189: 1–199.
no DOI — not checkedJansen, R. K., Stuessy, T. F., Diaz-Piedrahita, S., Funk, V. A., 1984: Recuentos chromosomicos en Compositae de Colombia. — Caldasia 14: 7–20.
no DOI — not checkedJones, S. B., Jr., 1977: Vernonieae systematic review. — In Heywood, V. H., Harborne, J. B., Turner, B. L., (Eds.): The biology and chemistry of the Compositae 1, pp. 503–521. — London: Academic Press.
no DOI — not checkedJones, S. B., Jr., 1979 b: Taxonomic revision of Vernonia sect. Leiboldia (Compositae: Vernonieae). — Castanea 44: 229–237.
no DOI — not checkedJones, S. B., Jr., 1979 c: Synopsis and pollen morphology of Vernonia (Compositae: Vernonieae) in the New World. — Rhodora 81: 425–447.
no DOI — not checkedJones, S. B., Jr., 1981: Synoptic classification and pollen morphology of Vernonia (Compositae: Vernonieae) in the Old World. — Rhodora 83: 59–75.
no DOI — not checkedKeeley, S. C., Jones, S. B., Jr., 1977 b: Vernonia (Compositae) in the Bahamas re-visited. — Rhodora 79: 147–159.
no DOI — not checkedKirkman, L. K., 1981: Taxonomic revision of Centratherum and Phyllocephalum (Compositae: Vernonieae). — Rhodora 83: 1–24.
no DOI — not checkedKitamura, S., 1968: Taxonomic studies in the genus Camchaya. — Acta Phytot. Geobot. 23: 71–73.
no DOI — not checkedMacLeish, N., 1984 a: Revision of Eremanthus (Compositae: Vernonieae). — Ph.D. thesis, University of Georgia, Athens, GA.
no DOI — not checkedNordenstam, B., 1977: Senecioneae and Liabeae — systematic review. — In Heywood, V. H., Harborne, J. B., Turner, B. L., (Eds.): The biology and chemistry of the Compositae 2, pp. 799–830. — London: Academic Press.
no DOI — not checkedPope, G., 1983: Cypselas and trichomes as a source of taxonomic characters in the erlangeoid genera. — Kirkia 12: 203–231.
no DOI — not checkedRobinson, H., 1979: Two new genera of Vernonieae (Asteraceae) from Brazil, Heterocypsela and Pseudostifftia. — Phytologia 44: 442–449.
no DOI — not checkedRobinson, H., 1981: Episcothamnus and Bishopalea, two new genera of the Vernonieae (Asteraceae) from Brazil, and the resurrection of Sipolisia. — Phytologia 48: 209–220.
no DOI — not checkedRobinson, H., 1987: Studies of the Lepidaploa complex (Vernonieae: Asteraceae). 1. The genus Stenocephalum Sch. Bip. — Proc. Biol. Soc. Washington 100: 578–583.
no DOI — not checkedRobinson, H., Brettel, R. D., 1973: Tribal revisions in the Asteraceae. 3. A new tribe, Liabeae. — Phytologia 25: 404–407.
no DOI — not checkedRobinson, H., Funk, V., 1987: A phylogenetic analysis of Leiboldia, Lepidonia, and a new genus Stramentopappus (Vernonieae: Asteraceae). — Bot. Jahrb. Syst. 108: 213–228.
no DOI — not checkedRobinson, H., Kahn, B., 1986: Trinervate leaves, yellow flowers, tailed anthers, and pollen variation in Distephanus Cassini (Vernonieae: Asteraceae). — Proc. Biol. Soc. Washington 99: 493–501.
no DOI — not checkedRobinson, H., King, R. M., 1979: Mattfeldanthus mutisioides gen. et spec. nov. (Asteraceae: Vernonieae) from Bahia, Brazil. — Willdenowia 9: 9–12.
no DOI — not checkedSkvarla, J. J., Turner, B. L., Tomb, A. S., 1977: Pollen morphology in the Compositae and in morphologically related families. — In Heywood, V. H., Harborne, J. B., Turner, B. L., (Eds.): The biology and chemistry of the Compositae. — London: Academic Press.
no DOI — not checkedSmith, C. E., 1971: Observations on the stengelioid species of Vernonia. — U.S.D.A. Agric. Handbook 396.
no DOI — not checkedSmith, G., 1984: A taxonomic revision of Piptocarpha (Compositae: Vernonieae). — Ph.D. Thesis, University of Georgia, Athens, GA.
no DOI — not checkedStutts, J. G., 1981: Taxonomic revision of Pollalesta H. B. K. (Compositae: Vernonieae). — Rhodora 83: 385–419.
no DOI — not checkedStutts, J. G., Muir, M. A., 1981: Taxonomic revision of Piptocoma Cass. (Compositae: Vernonieae). — Rhodora 83: 77–86.
no DOI — not checkedSwofford, D. L., 1985: PAUP — phylogenetic analysis using parsimony, version 2.4.0. — Champaign: Illinois Natural History Survey.
no DOI — not checkedTurner, B. L., 1977: Summary of the biology of the Compositae. — In Heywood, V. H., Harborne, J. B., Turner, B. L., (Eds.): The biology and chemistry of the Compositae 2, pp. 1105–1118. — London: Academic Press.
no DOI — not checkedWild, H., 1978: The Compositae of the Flora Zambesiaca area 8. Vernonieae (Vernonia). — Kirkia 11: 31–127.
no DOI — not checkedWild, H., Pope, G. V., 1977: The Compositae of the flora Zambesiaca area, 7. — Vernonieae (excluding Vernonia Schreb.). — Kirkia 10: 309–338.
no DOI — not checkedWillis, J. C. (revised by Shaw, H. K. A.) 1985: A dictionary of flowering plants and ferns, 8th edn. — New York: Cambridge University Press.
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