It is used by the French cooks, the same as the truffle, for gravies, but has not so good a flavour: it is in perfection in May and June. MUSHROOM, VIOLET. Agaricus violaceus. This mushroom requires more broiling than all the rest; but when well done and seasoned, it is very good. It is found in dry woods, old pastures, &c. where it grows to a large size. MUSHROOM, BROWN. Agaricus cinnamomeus.
Two humble-bees, Bombus thoracicus and B. violaceus, are found on the pampas; the first, with a primrose yellow thorax, and the extremity of the abdomen bright rufous, slightly resembles the English B. terrestris; the rarer species, which is a trifle smaller than the first, is of a uniform intense black, the body having the appearance of velvet, the wings being of a deep violaceous blue.
We did not see this majestic tree in blossom: it is not loaded with flowers* till in its fifteenth year, and they appear about the end of March and the beginning of April. M. Bonpland says, however, in his botanical journal written on the banks of the Rio Negro, flos violaceus.