The following points highlight the four main types of lichen thallus. The types are: 1. Crustose (Crustaceous) Lichens 2. Foliose (Foliaceous) Lichens 3. Fruticose Lichens 4. Squamulose Lichens. Type # 1. Crustose (Crustaceous) Lichens: The thallus is of insignificant size. It is flat, thin usually without any distinct lobes. It is just like a thin layer or crust closely attached [...]
In this article we will discuss about the similarities and dissimilarities between rusts and smuts. Similarities between Rusts and Smuts: (i) The mycelium in both passes through two stages, the monokaryotic (primary) stage and the dikaryotic (secondary) stage. (ii) The dikaryotic mycelium is of greater importance. It is usually perennial in both. It is intercellular and obtains nourishment by means [...]
Learn about the comparison among P. Graminis, P. Recondita and P. Striiformis. Comparison # P. Graminis: 1. Causes black rust of wheat attacking the stems most severely. 2. Generally appears in March in Northern India and the last week of November in South India 3. Uredosori appear on leaves, stems and ears. 4. Uredopustules are red or brown in colour, [...]