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  • 1
    Electronic Resource
    Electronic Resource
    Über Wirtspflanzen und Parasitismus einiger mitteleuropäischerRhinanthoideae (Scrophulariaceae) (1976)
    Springer
    Plant systematics and evolution 125 (1976), S. 97-107 
    Details
    ISSN: 1615-6110
    Keywords: Scrophulariaceae ; Rhinanthoideae (=Pedicularieae) ; Bartsia ; Lathraea ; Euphrasia ; Odontites ; Melampyrum ; Pedicularis ; Rhinanthus ; (Semi-)Parasitism ; haustoria ; host-specifity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract None of the 27 studiedRhinanthoideae is host-specific. Some host plants are preferred (e.g.Rosaceae, Fabaceae, Lamiaceae, Asteraceae, Cyperaceae, andPoaceae), others are strictly avoided (e.g.Orchidaceae). Self-parasitism and parasitism on rhizomes are wide-spread. This and the number of haustoria developed are closely related to number of host plants available. Most of theRhinanthoideae studied have haustoria also at the main root. No serious injury of host plants byRhinanthoideae under natural conditions can be demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00986775
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on new types of haustoria in some Central EuropeanRhinanthoideae (Scrophulariaceae) (1976)
    Springer
    Plant systematics and evolution 125 (1976), S. 223-232 
    Details
    ISSN: 1615-6110
    Keywords: Scrophulariaceae ; Rhinanthoideae (=Pedicularieae) ; Bartsia ; Euphrasia ; Lathraea ; Melampyrum ; Odontites ; Pedicularis ; Rhinanthus ; (Semi-)parasitism ; haustoria ; metahaustoria ; wart-haustoria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two new types of haustoria have been found in many representatives ofRhinanthoideae. Metahaustoria are stimulated by host roots but lack contact with them. They develop a massive haustorial core with a large- and a smalled-celled portion, but little vascular core. In very old metahaustoria the vascular core is much enlarged and numerous tracheal elements develop in the reduced haustorial core and cortex. Warthaustoria are very small, occur only in the upper portions of the root system, and have host contacts. Vascular and haustorial core, and the endophyte are lacking, the intrusive cells are usually not endogenous, but rather roothair-like. Wart-haustoria may represent reduced and partly inhibited “normal” haustoria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00996239
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Evolution des Parasitismus bei denScrophulariaceae undOrobanchaceae (1980)
    Springer
    Plant systematics and evolution 136 (1980), S. 217-232 
    Details
    ISSN: 1615-6110
    Keywords: Scrophulariaceae ; Orobanchaceae ; Euphrasia ; Rhinanthus ; Melampyrum ; Pedicularis ; Tozzia ; Lathraea ; Odontites ; Bartsia ; Bellardia ; Parentucellia ; Orobanche ; Hyobanche ; Alectra ; Striga ; Parasitism ; primary and secondary haustoria ; wart- and leaf-haustoria ; evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Different growth forms and life forms of parasitic plants inScrophulariaceae andOrobanchaceae were studied from a comparative point of view. The most primitive form of parasitism is found in small, annual root parasites. Small wart-haustoria in the hypocotylar region of larger root parasites point towards a tendency of these plants to form hypocotylar tubercles as primary haustoria. Wart-haustoria also can develop on scale leaves, demonstrating an evolutionary trend towards the most advanced form of parasitism in these two families the formation of large leaf haustoria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01004627
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