Crossword-Solution: HYPHA 5 letters, 6 clues 🏆 scrabble score: 16

Saprophytic bacteria can readily make their way down the dead hypha of an invading fungus, or into the punctures made by insects, and Aphides have been credited with the bacterial infection of carnations, though more recent researches by Woods go to show the correctness of his conclusion that Aphides alone are responsible for the carnation disease.

Easily distinguishable from all similar moulds by the absence of mycelium or of anything like a hypha.

Appressoria are also formed by some parasitic fungi, as a minute flattening of the tip of a very short branch (_Erysiphe_), or the swollen end of any hypha which comes in contact with the surface of the host (_Piptocephalis_, _Syncephalis_), haustoria piercing in each case the cell-wall below.

Infection in these cases occurs in the seedling at the place where root and shoot meet, and the infecting hypha having entered the plant goes on living in it and growing up with it as if it had no parasitic action at all.

That of another pollen grain again may refuse to unite at all; while that of a fungus hypha--_e.g._ of _Sclerotinia_ on _Vaccinium_--may run down the style as does the pollen tube and produce death and destruction throughout the ovule.