Of L. _piperatus_, Worthington Smith says: "So strongly acrid is the milk that if it be allowed to trickle over tender hands it will sting like the contact of nettles; and if a drop be placed on the lips or tongue the sensation will be like the scalding of boiling water." He records it as "poisonous." Fries and Curtis say that, "notwithstanding its intense acridity, it is edible when cooked." Cordier, while recording it as edible, says that the milk, and butter made from the milk of cows fed with it, are bitter and nauseous, although cows eat it with avidity. Gibson, while quoting one or two authors as to its edibility when cooked, says: "Its decidedly ardent tang warns me not to dwell too enthusiastically upon its merits in a limited selection of desirable esculents." The Secretary of the Boston Mycological Club, writing in the Club bulletin, says "it has been eaten as a sort of duty after the acridity was cooked out," but does not commend it. It is spoken of as "an unattractive fungus which usurps in the woods the place that might well be occupied by something better." In this opinion I fully concur. L. _torminosus_, "_Wooly Lactarius_," sometimes called the "_Colic Lactarius_," has been termed acrid and poisonous by Badham. Cordier and Letellier, on the other hand, say that it can be eaten with impunity when cooked. Gillet declares it deleterious and even dangerous in the raw state, constituting a very strong and drastic purgative. One author states that, although it does not constitute an agreeable article of food, it is eaten in some parts of France and in Russia. Considering the differences of opinion which exist with regard to this and other extremely acrid species, it would seem the part of prudence for persons with delicate stomachs to avoid the use of very acrid species, for, though the acridity may be expelled by cooking, there would seem to be no necessity for risking unpleasant or dangerous results while the range of unquestionably wholesome and agreeable species is sufficiently wide to satisfy the most enthusiastic mycophagist. AGARICINI. LEUCOSPORI (SPORES WHITE OR YELLOWISH). Armillaria Fries. Cooke places Armillaria in the order Agaricini, _genus Agaricus_, making of it a _sub_-genus. Saccardo, in taking it out of Agaricus, elevates it to the position of a separate genus. The name Armillaria is derived from a Greek word, meaning a ring or bracelet, referring to its ringed stem. In the plants of the Armillaria the veil is partial in infancy, attaching the edge of the cap to the upper part of the stem; the stem furnished with a ring. Below the ring the veil is concrete with the stem, forming scurfy scales upon it. The gills are broadly adnexed. In abnormal specimens the ring is sometimes absent, or appearing only in scales, running down the stem. Spores white. The species are few; eight are recorded as growing in the United States. Cooke describes twelve species found in Great Britain.