1968
DOI: 10.1002/j.1537-2197.1968.tb07384.x
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Chromosomal and Flowering Characteristics in Dwarf Mistletoes (Arceuthobium)

Abstract: Chromosome numbers and other karyological features of Arceuthobium are reported for all species and subspecific groups in the United States and 7 of the 13 entities occurring in Mexico. The only chromosome number known in the genus is n =14 and the karyotype appears to be fundamentally symmetrical. The bivalents are significantly smaller than in the related genus Phoradendron. No supernumerary chromosomes, sometimes present in Phoradendron, were observed in Arceuthobium. The existence of strong isolating mecha… Show more

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Cited by 10 publications
(4 citation statements)
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“…The chromosomes of African or Madagascan species of Arceuthobium and Korthalsella aIso possess the same basic features as those from other continents. Illustrations of the chromosomes of Arceuthobium, Korthulsella and Viscum are found in Wiens (1968), Barlow (1963), and Wiens & Barlow (1971), respectively.…”
Section: Resultsmentioning
confidence: 99%
“…The chromosomes of African or Madagascan species of Arceuthobium and Korthalsella aIso possess the same basic features as those from other continents. Illustrations of the chromosomes of Arceuthobium, Korthulsella and Viscum are found in Wiens (1968), Barlow (1963), and Wiens & Barlow (1971), respectively.…”
Section: Resultsmentioning
confidence: 99%
“…Pistillate flowers are the same color as the green shoots, and = 1.5 mm long by 1.2 mm diameter (Hawksworth and Wiens 1972). Arceuthobium douglasii is an indirect flowering species, undergoing staminate meiosis the fall prior to spring anthesis (Wiens 1968).…”
Section: Introductionmentioning
confidence: 99%
“…3 Current address: Abbott Laboratories, Abbott Park, IL 66064. that develop from extensive systemic host infections called witches' brooms. The dwarf mistletoes of Section Campylopoda form nonsystemic infections on their host trees, have larger aerial shoots, and flower in the summer or fall (Wiens, 1968). This group is especially speciose in the western United States where an apparent adaptive radiation resulted in parasites specific to Abies, Larix, Picea, Pinus, and Tsuga.…”
mentioning
confidence: 99%