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  • Epilobium sect.Epilobium  (3)
  • Myrtales  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Chromosomal evolution inEpilobium sect.Epilobium (Onagraceae), II. (1977)
    Springer
    Plant systematics and evolution 128 (1977), S. 195-200 
    Details
    ISSN: 1615-6110
    Keywords: Onagraceae ; Epilobium sect.Epilobium ; Chromosomes ; reciprocal translocations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A cytological analysis of 37 experimental interspecific hybrids withinEpilobium sect.Epilobium, involving 23 taxa, has indicated that the CC chromosome arrangement differs from BB by a single reciprocal translocation and was probably, like AA and DD, derived from it. Preliminary results suggest that the CC arrangement may characterize the AsianE. cephalostigma andE. platystigmatosum, which do not closely resemble the species in which it had earlier been detected. The BB arrangement is shown to occur in all North American species of theE. palustre group, includingE. oregonense. Direct evidence on chromosome arrangement is now available for some 85 of the approximately 185 species of the section, and may be inferred for at least 25 more.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984555
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  • 2
    Electronic Resource
    Electronic Resource
    Chromosomal evolution inEpilobium sect.Epilobium (Onagraceae) (1977)
    Springer
    Plant systematics and evolution 127 (1977), S. 107-119 
    Details
    ISSN: 1615-6110
    Keywords: Onagraceae ; Epilobium sect.Epilobium ; Chromosomes ; reciprocal translocations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract WithinEpilobium sect.Epilobium, a cytological analysis of 121 experimental hybrids, involving 40 species, indicates the presence of a widespread BB chromosome arrangement in Eurasia, Africa, and Australasia, as well as in North and South America less commonly. The AA chromosome arrangement, which differs from BB by one reciprocal translocation, occurs in North America, South America, and in at least three European species. The CC arrangement, which differs from AA by two reciprocal translocations, characterizes theAlpinae, a circumboreal group. Distinctive or only partly worked out chromosome arrangements occur in the EuropeanE. duriaei andE. nutans and in the North AmericanE. luteum, E. obcordatum, E. oregonense, andE. rigidum. With earlier results, the chromosome arrangements of some 65 of the estimated 185 species of the section have been established fully or partly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984145
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  • 3
    Electronic Resource
    Electronic Resource
    Chromosomal evolution inEpilobium sect.Epilobium (Onagraceae), III. (1978)
    Springer
    Plant systematics and evolution 130 (1978), S. 79-83 
    Details
    ISSN: 1615-6110
    Keywords: Onagraceae ; Epilobium sect.Epilobium ; Chromosomes ; reciprocal translocations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A cytological analysis of 22 experimental interspecific hybrids withinEpilobium sect.Epilobium, involving 15 taxa, has indicated that the generalized western North AmericaE. obcordatum has the BB chromosome arrangement. This strengthens greatly our earlier contention that BB is the original chromosome arrangement in the section. The very distinctive northwestern North AmericanE. luteum, only species in the section with cream-colored petals, has the CC arrangement, like the members ofHaussknecht'sAlpinae. This chromosome arrangement apparently originated in the North Pacific region in plants that were of normal stature. The North AmericanE. leptocarpum, which closely resembles the Japanese endemicE. fauriei and, like it, forms gemmae in the axils of the upper leaves, also resembles it in having the CC chromosome arrangement. The AsianE. platystigmatosum has a novel chromosome arrangement derived from BB, which we here designate the EE arrangement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00983075
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  • 4
    Electronic Resource
    Electronic Resource
    The embryology and relationships ofOliniaceae (1984)
    Springer
    Plant systematics and evolution 146 (1984), S. 105-116 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Myrtales ; Oliniaceae ; Olinia ; Embryology ; reproductive anatomy ; systematics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two of the five species ofOliniaceae (Olinia emarginata andO. ventosa), a monotypic and problematic family of theMyrtales, were investigated embryologically.Oliniaceae clearly agree with otherMyrtales in their basic embryological characteristics, and are characterized further by having an ephemeral endothecium, a campylotropous ovule, and a thick, three-five-layered, outer integument. A combination of these three characteristic features is unknown elsewhere inMyrtales, so that embryological features do not support a close relationship with any other member of the order. Shared distinctive anther characteristics (i.e. ephemeral endothecium) suggest thatOliniaceae are derived from the common ancestor ofCrypteroniaceae s. str.,Rhynchocalycaceae, Alzateaceae, andPenaeaceae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984057
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  • 5
    Electronic Resource
    Electronic Resource
    The embryology and relationships ofPenaeaceae (Myrtales) (1984)
    Springer
    Plant systematics and evolution 146 (1984), S. 181-195 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Myrtales ; Penaeaceae ; Penaea ; Saltera ; Embryology ; reproductive anatomy ; systematics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two species ofPenaeaceae (Penaea mucronata andSaltera sarcocolla), a unique South African family ofMyrtales, were investigated embryologically.Penaeaceae clearly agrees with otherMyrtales in its basic embryological characteristics, and further is characterized by its highly specialized features: ephemeral endothecium, 16-nucleatePenaea-type embryo sac, and unique ovular form. A wider range of affinities of families includingPenaeaceae, Oliniaceae, Rhynchocalycaceae, Alzateaceae, andCrypteroniaceae sensu stricto, as well as a possible common divergence from an ancestral line leading toLythraceae and/orMelastomataceae, are discussed on embryological and other grounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989545
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