This Agaric which takes its name from the tree where it is most commonly found, grows also, though less frequently, on the Poplar and Beech. Mr. Berkeley reports it rare; perhaps, however, as it is eminently local, it may here, as in Italy, be common in some places though of unfrequent general occurrence. No country being so rich in Elm-trees as our own, we should probably find _A. ulmarius_ more often if the height at which it grows among the branches did not frequently screen it from observation.[193] Though registered in the Flora of Tunbridge Wells, I have not met with a single specimen of it this autumn. This Agaric dries well and may be kept (not, however, without losing some of its aroma) for a long time without spoiling; the gills, after a time, assume the same hue as the pileus. AGARICUS FUSIPES, _Bull._ Subgenus CLYTOCYBE. Subdivision CHONDROPODES. “Il a le même goût quo le Champignon de Couche, quoique un peu plus prononcé.”—_Persoon._ _Bot. Char._ Gregarious; _pileus_ fleshy, loose, of a uniform brown colour, sometimes marked with dark blotches, as if burnt; _gills_ nearly free, serrated, at first dirty-white, afterwards a clear bistre; easily separable from the stalk; _stalk_ hollow, ventricose, sulcate, rooting, spindle-shaped, slightly grooved, tapering at the base, sometimes cracked transversely, varying singularly both in length and breadth. This excellent fungus is very abundant throughout summer and autumn, coming up in tufts at the roots of old Oak-trees after rain. It may be easily recognized by its peculiar spindle-shaped stalk. Vittadini does not mention it, nor does its name occur in the list of esculent funguses in the Diz. di Med. Class.; notwithstanding which the young plants make an excellent pickle; while the full-grown ones may be stewed or dressed in any of the usual modes adopted for the common mushroom. AGARICUS VAGINATUS, _Bull._ Series 1. LEUCOSPORUS. Subgenus 1. AMANITA. “La Coucoumèle grise (_Ag. vag._) est une des espèces les plus délicates et les plus sûres à manger.”—_De Candolle._