CLAVIS AGARICINORUM. 179 



the gills, exactly as in A. separatus, L. (Plate CIV. fig. 33) ; pileus 

 generally fleshy ; stem homogeneous and confluent with the hymeno- 

 phorum, central and subfleshy, without either ring or volva, and with 

 no distinct barklike coat ; gills sinuate, i. e. with a sinus (or small 

 sudden curve) near the stem (h). — Hab. All the species grow on the 

 ground, the larger in hilly woods, and the smaller in pastures. 



TricJioloma corresponds with Entoloma, Plate CI. fig. 13 ; Hebeloma, 

 Plate CII. fig. 20 ; Hypholoma, Plate CIII. fig. 29 ; and Pcmfeolus, 

 Plate CIV, fig. 33. Most of the species grow in the autumn, some 

 very late, but a group of which A. gambosus, Pr., is the type, is 

 strictly vernal, and the species constituting it have long been con- 

 sidered special delicacies ; the greater number of the remaining 

 species are also edible, and have a pleasant odour like that of new 

 flour, but a few are rank and suspicious, of which A. mponacem, Pr., 

 is an example. This very large subgenus has been subdivided by 

 Pries in the following manner : — 1. Pileus viscid. 2. Pileus floccu- 

 lose. 3. Pileus rigid. 4. Pileus silky. 5. Pileus spotted or mi- 

 nutely cracked. 6. Pileus spongy. 7. Pileus hygrophaiious. In 

 Hygropliorus, Lactarius, and Russida, the general structure is ranch 

 the same as in TricJioloma, but they form well-marked genera. Hy- 

 gropJtorus is distinguished by its waxy nature ; Lactarius by its milky 

 gills and flesh ; and Russula, by its rigid brittle gills generally in one 

 series and vesicidose flesh. The species figured is Agaricus (TricJio- 

 loma) terreus, Schseff. Spores -0002" X -00013". 



Subgenus 5. Clitocybe, Fr. Syst. Myc. vol. i. p. 78 (Plate C. fig. 

 5). — Pileus, generally fleshy in the disk, obtuse, plane or depressed, 

 hygrophanous or not hygrophanous ; stem confluent and homogeneous 

 with the hymenophorum, elastic, with an outer coat, covered with 

 minute fibres ; gills acutely adnate, or decurrent. The fibrillose outer 

 coat of CUtocybe (and sometimes of TricJioloma and Pleurotus) must 

 not be confounded with the tndy fibrous bark of Collybia, Mycena, 

 OmpJialia, and their analogues. — Hab. All are terrestrial. 



CUtocybe corresponds with Clitopilm, Plate CI. fig. 14, and Flam- 

 mula, Plate CII. fig. 21. The species are generally small, though 

 some are very large ; many possess an agreeable odour, but few only 

 are known to be edible. Most of the species appear late in the autumn 

 or in early Avinter. In Ca nlJiarellus the gills are strongly decurrent, 

 but they are reduced to thick veins or folds. The species of Uygro- 



