Tabular key
The tabular key is a supplement to support morphological identification of Phytophthora species after working with the Lucid key. It contains the same 161 species covered by the Lucid key and the molecular analyses. The tabular key is organized by the position of the species in the ITS rDNA phylogenetic tree of the ex-types and well-authenticated species; the tree contains 10 clades and 25 sub-clades (see Fig 3 in the Molecular protocols). The tabular key is also organized by the characters of the asexual phase (sporangium, proliferationproliferation:
formation of a sporangium within an empty sporangium that has previously emitted zoospores (internal or nested) or after the sporangiophore has emerged from the empty sporangium (external)
, sporangiophoresporangiophore:
the hyphal strand on which the sporangium is formed; may be branched or unbranched to form compound sympodia or simple sympodia
, hyphal swellings, and chlamydospores); sexual phase (oogonia, antheridiaantheridia:
the male gametangium; a multinucleate, swollen hyphal tip affixed firmly to the wall of the female gametangium (the oogonium)
, oosporeoospore:
zygote or thick-walled spore that forms within the oogonium after fertilization by the antheridium; may be long-lived
); colonycolony:
assemblage of hyphae which usually develops form a single source and grows in a coordinated way
morphology in V-8, PDA and MEA; and temperature requirements.
