BOLBITIUS. 363 



tant when the pileus is split, 2 mm. (i lin.) broad, alternate, at first Bolbitius. 

 pu7'plish, then fuscous-flesh-colour. 



Very tender and fragile, smooth, tremulous-wavering, soon wasting away. 

 Among grass in rich manured soil, &c. Common. May-Oct. 



Pileus yellow, but soon presenting the salmon-tint of the gills, AI.J.B. 

 Spores 8 X4mk. U'.G.S. Name — titubans, shaking. Wavering-tremulous. 

 Fr. Monogj: i. p. ^yi. Hym. Eur. p. 334. Berk. Out. p. 182. C. Hbk. 11. 

 483. S. Mycol. Scot. 71. 443. Agancus Bull. t. 425. Sow. t. 128. 



5. B. apicalis Smith. — Pileus 18 mm. (^ in.) high, brown, disc 

 ochraceous, membranaceous, striate from the first then plicate, 

 liable to split, disc somewhat fleshy, obscurely umbonate. Stem 

 about 5 cent. (2 in.) long, hollow, striate, white, minutely pruin- 

 ose under a lens. Gills somewhat broad, ventricose, free, at first 

 pressed to the stem, brown. 



The difference in colour between the two parts of the pileus is defined by a 

 distinct line. 



In pastures. Staplehurst. Early summer. 



Spores 9X 6 mk. W.G.S. Name — fro"T the singularly defined rt/^.v. Smith 

 in C. Hbk. n. 484. Fr. hym. Eur. p. 334. 



6. B. tener Berk. — Pileus white, moist, conical, elongated. 

 Stem white, bulbous at the base. Gills attenuated behind, near- 

 ly free, salmon-coloured. 



Very delicate. At first looking like a dry specimen of A. tener. 



On lawn and rich ground. Uncommon. Sept. 



Stem as much as 5 cent. (2 in.) long, not distinctly bulbous. Pileus, in 

 specimens I have seen, flesh-colour then whitish, Fr. Spores 12 x 5 mk. W.P. 

 Name— te7zer, tender. Berk. Out. p. 183. /. 12. /. 2. C. Hbk. u. 485. S. 

 Mycol. Scot. 71. 444. Fr. Hym. Eur. p. 335. Ico7/. t. 130. f. 4. Bolb. 

 albipes Fr. Mo7iogr. ii. /. 306. 



7. B. rivulosus B. & Br. — Pileus about 4 cent. (iX i"-) broad, 

 tan-colour, campanulate, rivulose. Stem attenuated upwards. 

 Gills narrow, cinnamon. 



\'ery different from any other known species. 



On earth in an orchard house. Chiswick, 1876. Jul}-. 



Name — 7-ivula, a small stream. From the rivulose pileus. B. 6^ Br. 

 71. 1773. 



