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| Figure 2: A sampling of the wide morphological diversity seen in angiosperm haustoria. Ximenia (Olacaceae), Hydnora (Hydnoraceae), Arceuthobium (Viscaceae), Conopholis (Orobanchaceae), Dendrophthoe (Loranthaceae), Cuscuta (Convolvulaceae), Balanophora (Balanophoraceae), and Striga (Orobanchaceae). (Used by permission of D.L. Nickrent; Striga image is reproduced with permission from Dörr, I. (1997) How Striga parasitizes its hosts: a TEM and SEM study. Annals of Botany 79:463-472.) |