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Auteur S. D. Johnson |
Documents disponibles écrits par cet auteur (2)
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Article
S. D. Johnson, Auteur ; T. J. Edwards, Auteur ; C. Carbutt, Auteur ; C. Potgieter, AuteurThe evolution of pollination systems has been investigated in Zaluzianskya section Nycterinia (Scrophulariaceae), a group characterized by very long-tubed flowers (up to 60 mm) that open either only at night (19 species) or during the day (one s[...]![]()
Article
S. D. Johnson, Auteur ; H. Kurzweil, AuteurTwo spectacular new orchid species from the semi-arid Karoo region of South Africa are described here. Both have been confused with Satyrium erectum Sw. in the past, yet have clear diagnostic characters which justify their recognition as distinc[...]



