Which one of the following is commonly called 'Edible sponge mushroom'?

The 'Edible sponge mushroom' is the common name for Morchella, specifically Morchella esculenta, also known as the yellow morel or 'guchchhi' in India [t1][c5]. It is highly prized for its unique flavor and medicinal properties [t1]. The name 'sponge mushroom' refers to the distinctive honeycomb-like appearance of its cap, which consists of a network of ridges and pits resembling a sponge. While Agaricus bisporus is the most commonly cultivated edible mushroom worldwide, it is known as the button mushroom rather than the sponge mushroom [t3][t4]. Polyporus refers to a genus of pore fungi often found on wood [t2], and Sargassum is a genus of brown seaweed (algae), not a fungus [t2][t7]. Morchella belongs to the Ascomycetes group and is a sought-after wild edible fungus [t1][t5].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 5: Natural Vegetation and National Parks > 12. Fruits and Vegetables > p. 28
2. [2] https://www.sciencedirect.com/science/article/pii/S0753332222000099