A Grammatical Dictionary of Botanical Latin

exogenus,-a,-um (adj.A), exogeneticus,-a,-um (adj.A), DELETE:exogenus,-a,-um (adj.A): exogenous, “growing by addition to the outer parts of the stem” (Lindley); “1. growing as the wood of Dicotyledons; 2. arising from superficial tissue” (Jackson): “growing by annular layers near the surface” (Fernald 1950); (liverworts) “originating from external cells or parts of cells; of a terminal branch derived from a cortical cell; of a gemma budded off from a leaf cell” (Paton); (bryophytes) “originating from superficial rather than from internal cells or tissues; e.g. exogenous branches” (Magill 1990); produced on the outside of another body, or from the outer tissue; “growing by annular layers near the surface” (Fernald 1950); “produced from without; originating from or due to external causes, as growing from or on the outside (as of spores); growing by addition to the exterior (as of stems)” (WIII); see endogenus,-a,-um (adj.A);

- endocysta exogena, exogenous resting spore (Diatoms).

NOTE: ‘exogeneous’ used in the following:

- [algae] Cellulae (seu articuli), formatione suprautriculari in utroque earum strato augentur: formatione cellularum novarum in strato centrali prolongatur frons, et novis cellulis strati exterioris ‘peripherice increscit’; est itaque frondis vegetatio in his ‘peripherico-terminalis,’ seu fere potius ‘exogenea’ nominando (Agardh), the cells (or articulations), are added to by the supra-utricular formation in each [of two] of their layers: the frond is prolonged by the formation of new cells in the central layer, and increases peripherally by the new cells of the outer layer; the growth of the frond thus in these is peripheral-terminal, or it almost actually could be called exogenous [exogeneous].