336 
ON THE PILOBOLIDiE. 
Stem much taller than in any other species, 2-3 or even 5 cm. high. 
Sporange J mm. in diameter. Columella conico-cylindric, bluish-black. 
Spores dark green in the mass. Basal reservoir 1^-2 mm. long, 
rooting. Swelling 1 mm. or more broad. 
On horse and dog dung. 
France, Germany. 
6.—P. RORIDUS, Persoon. 
Fungus (a stercore equino), Bay, “Hist. Plant.,” ii., 1928 (1688); 
iii., 24 (1704) ; “ Syn. Metli.,” ed. ii., p. 322 (1699); ed. iii., p. 13 (1724) 
-—Petiver, “ Gazophyl.,” pi. 105, fig. 14 (1711). 
Fungus virginianus, Pluk, “ Phyt.,” pi,. 116, f. 7. 
Mucor roridulus, Withering, “ Bot. Arr.,’’ ed. 1, ii., 784 (1776). 
Mucor roridus, Bolton, “ Hist. Fung.,” iii., No. 168, pi. 132, f. 4 
(1789)—Withering, “ Brit. PL,” ed. 4, iv., 394 (1801)—Belhan, “ Flor. 
Cantab.,” p. 579 (1820). 
Pilobolus roridus , Persoon, “Syn. Metli.,” p. 118 (1801)—Schu¬ 
macher, “ Saell.,” ii., 188 (1803)—Alb. et Schwein., “ Consp. Fung.,’ - ' 
p. 72 (1805)—Link, “Spec. PL,” i., 96; “Handb.,” iii., 480 (1833J— 
Fries, “ Syst. Myc.,” ii., 309 (1822); iii., 312 (1832); “ Summ. Veg. 
Sc.,” p. 487—Linnaeus, “ Syst. Yeget.,” iv., pt. 1, p. 519 (1827)— 
Loudon, “ Encycl. Pl.,” p. 1024, f. 16349 (1829)—Berkeley, “Eng. 
FL,” v., 231 (1836)—Baben., “ Krypt. FL,” i., 135 (18441—Bonorden, 
“Handbk.,” p. 128 (1851)—Bail, “Bot. Zeit. Mohl,” pp. 629-35 (1855) 
—Coemans, “ Monogr.,” p. 61, pl. 2, f. B (1861)—Cooke, “Handbk. Br. 
Fung.,” p. 633 pro parte (1871)—Van Tieghem, “Nouv. Bech. Muc.,” 
p. 46, pl. 1, f. 7-13 (1875)—Stevenson, “Myc. Scot.,” p. 291 (1879)— 
Yize, “Cat. Pl. Forden ”—Bainier, “Etude,” p. 44, pl. 2, f. 16 (1882). 
Pilobolus microsporus, Klein, “ Zur KeDnt. Pil.,” p. 360, pl. 27-8, 
f. 53-67 (1870). 
Non P. roridus, Leveille, nec Bischoff, nec Currey, nec Cooke, 
fig. 301, nec Brefeld. Probably also some of those quoted above 
belong to P. crystallinus, when no figure is given. 
Stem long, slender, cylindrical, colourless; swelling 
globular; sporange hemispherical, depressed, black, much 
smaller in diameter than the swelling ; basal reservoir usually 
intercalary, concealed; spores elliptic, faintly yellowish in 
the mass, 6-8 fx3-4f. (Pl. vi., figs. 4-6). 
Stem 1-2 cm. high, with less colour than in any other species. 
Swelling abrupt. Dew-drops very abundant. Columella flatly convex, 
dingy. 
On the dung of horse, hare, etc. Sometimes occurring with 
P. crystallinus (?) 
England, France, Germany. Not common. 
7.— PILOBOLUS NANUS, Yan Tieghem. 
Pilobolus nanus , Yan Tieghem, “Trois. Mem.,” p. 29, pl. 10, f. 16-22 
(1878). 
iStern short, slender; swelling globular; sporange globular, 
yellow, of the same diameter as the swelling, with a small 
apophysis; basal reservoirs globular, intercalary, two, three or 
even five together; spores colourless, homogeneous, spherical, 
3-5-4^. (Pl. vi., fig. 2.) 
The whole plant is colourless except the sporangial membrane. 
Stem hardly 1 mm. high. Columella flatly convex, inserted above the 
