DESCRIPTION OF PLATES.

PLATE I.

Fig. 1.-a, Morchella esculenta, nat. size; b, a section of the same; ċ, an ascus and paraphyses; d, sporidia. c and d x 400 times.

Fig. 2.-a, Gyromitra esculenta, nat. size; b, section of the same; c, an ascus and a paraphysis; d, a sporidium. c and d x 400 times. Fig. 3.-a, Helvella lacunosa, nat. size; b, a section of the same; c, an ascus with two paraphyses; d, three sporidia. c and d x 400 times.

Fig. 4.―a, Verpa rufipes, nat. size; b, a section of the same; c, an ascus and a paraphysis; d, sporidia; e, cellular filament from the epidermis. c, d, and e x 400 times.

PLATE II.

Fig. 5.-a, Leotia circinans, nat. size; b, section of the same; c, an ascus with three paraphyses; d, two sporidia. c and d x 400 times. Fig. 6.-a, Mitrula paludosa, nat. size; b, section of the upper part; c, an ascus; d, three sporidia. c and d x 400 times.

Fig. 7.-a, Spathularia flavida, nat. size; b, section of the same; c, an ascus with three paraphyses; d, two filiform sporidia. c and d × 400 times.

Fig. 8.-a, Leptoglossum viride, nat. size; b, section of the same; c, an ascus with two paraphyses; d, sporidia. c and d x 400 times.

Fig. 9.-a, Geoglossum hirsutum, nat. size; b, an ascus with two hooked paraphyses; c, a sporidium; d, one of the black rigid hairs from the hymenium intermixed with the asci. b, c, and d x 400 times.

Fig. 10.—a, Rhizina undulata, nat. size; b, a section of the same, showing the root-like fibrilla; c, an ascus; d, the fusiform sporidia. c and d x 400 times.

PLATE III.

Fig. 11.-a, Peziza acetabulum, nat. size; b, a section of the same; c, an ascus with a paraphysis; d, three sporidia. c and d x 400 times. Fig. 12.—a, Peziza cupularis, nat. size; b, a section of the same ; c, an ascus with a paraphysis; d, three sporidia. c and d x 400 times. Fig. 13.-a, a, Peziza pleurota, nat. size; b, section of the same; c, an ascus and a paraphysis; d, four sporidia. c and d x 400 times. Fig. 14.-a, Peziza aurantia, nat. size; b, section of the same; c, an ascus with a paraphysis; d, sporidia. c and d x 400 times.

Fig. 15.-a, a, a, Peziza trachycarpa, nat. size; b, a section; c, an ascus and a paraphysis; d, four sporidia. c and d x 400 times.

PLATE IV.

Fig. 16.-a, Peziza succosa, two cups, nat. size; b, a section of a cup; c, an ascus with two paraphyses; d, four sporidia, the two lower more mature. c and d x 400 times.

Fig. 17.-a, a, Peziza radula, nat. size; b, a section of a cup; c, an ascus with a paraphysis; d, four sporidia. c and d x 400 times.

Fig. 18.-a, a, a, Peziza lividula, nat. size; b, a section of a cup;› c, an ascus with a paraphysis; d, three sporidia. c and d x 400 times. Fig. 19.-a, Peziza Crouani, nat. size; b, a cup magnified 5 times ; c, a section of the same; d, an ascus with a paraphysis; e, four sporidia. d and e x 400 times.

Fig. 20.—a, Peziza rutilans, two cups, nat. size; b, a section of a cup; c, an ascus with a paraphysis; d, four sporidia. c and d x 400 times.

Fig. 21.-a, Peziza corallina, a group the nat. size; b, b, two cups slightly magnified; c, a section of a cup also slightly magnified; d, an ascus with a paraphysis; e, two sporidia. d and e x 400 times.

PLATE V.

Fig. 22.-a, Peziza omphalodes, a group the nat. size; b, a group slightly magnified; c, a cup more highly magnified; d, a section of the latter, both showing the white mycelium from which they spring; e, an ascus with paraphyses; ƒ, four sporidia. e and ƒ × 400 times.

Fig. 23.—a, a, Psilopezia, nat. size; b, a section of the upper one; c, ascus with a paraphysis; d, seven sporidia. c and d x 400 times.

Fig. 24.-a, Hymenoscypha sclerotiorum, a group the nat. size, with the sclerotia from which they arise; b, a section of one; c, an ascus with a paraphysis; d, five sporidia. c and d x 400 times.

Fig. 25.-a, Hymenoscypha pseudo-tuberosa, a group the nat. size, arising from a decayed acorn; b, a section of a cup slightly magnified; c, two asci with paraphyses; d, six sporidia, showing their variable size. c and d x 400 times.

Fig. 26.-a, Hymenoscypha coronata, a group the nat. size; b, two cups magnified, one being a section; c, an ascus with a paraphysis; d, three sporidia. c and d x 400 times.

Fig. 27.-a, Hymenoscypha Broomei, a group the nat. size; b, three cups magnified; c, a section of a cup; d, two asci; e, six sporidia. d and e x 400 times.

Fig. 28.-a, Chlorosplenium æruginosum, a group the nat. size; b, two cups slightly magnified; c, a section of a cup; d, an ascus with paraphyses; e, seven sporidia. d and e × 400 times.

Fig. 29.-a, Belonidium culmicolum, a group the nat. size; b, two cups magnified 10 times; c, a section of a cup magnified 10 times; d, an immature and a mature ascus with paraphyses; e, four sporidia, one of which shows a gelatinous envelope not unfrequently seen to surround them. d and e x 400 times.

Fig. 30.-a, Helotium ferruginosum, a group the nat. size; b, three cups slightly magnified; c, a section of a cup slightly magnified; d, two asci with paraphyses; e, six sporidia in various stages of development. d and e x 400 times.

Fig. 31.-a, Helotium claro-flavum, a group the nat. size; b, a group slightly magnified; c, a section of a cup also magnified; d, an ascus with paraphyses; e, seven sporidia in various stages of development. d and e x 400 times.

PLATE VI.

Fig. 32.-a, Mollisia cinerea, a group the nat. size; b, a group seen from above, slightly magnified; c, two cups viewed sideways, also magnified; d, a section of a cup; e, an ascus with paraphyses; ƒ, twelve sporidia, representing the variation in size and form in the same individual. e and fx 400 times.

Fig. 33.-a, Mollisia nervisequia, a group the nat. size on a fragment of a leaf of Plantago; b, two cups magnified 20 times, and in two stages of development; c, a section of the younger one; d, an ascus with paraphyses; e, six sporidia. d and e x 400 times.

Fig. 34.-a, Mollisia dilutella, a group the nat. size; b, three cups magnified, showing the several stages of growth; d, three asci; e, eight sporidia, showing the degree of variability of size and shape. d and ex 400 times.

Fig. 35.-a, Mollisia Bullii, a group the nat. size; b, a group magnified; c, a section of a cup also magnified; d, two asci; e, seven sporidia, showing variation of size. d and e x 400 times.

Fig. 36.-a, Mollisia cerastiorum, a fragment of the host plant

bearing four cups, nat. size; b, c, three cups magnified, the lower one seen from above; d. a section of a cup also magnified; e, two asci; f, nine sporidia; e and f, x 400 times.

Fig. 37.-a, Mollisia peristomialis, a group the nat. size; b, three cups magnified 20 times; c, a section of a cup, showing the scarcely depressed hymenium; d, two of the teeth magnified; e, three asci; f, four sporidia. d, e, and ƒ × 400 times.

Fig. 38.-a, a, Lachnea radiculata, nat. size; b, a section of a cup; c, one of the nearly colourless hairs from the exterior of the cup; d, an ascus with paraphyses; e, four sporidia in several stages of growth. c, d, and e x 400 times.

Fig. 39.-a, Lachnea sepulta, one mature cup and three young ones, nat. size; b, a section of a cup; c, a group of hairs from the exterior of the cup; d, an ascus with a paraphysis; e, three sporidia, the lower one more advanced in growth. c, d, and e x 400 times.

PLATE VII.

Fig. 40.-a, Lachnea melastoma, nat. size, showing the black strigose filaments from which it springs; b, section of a cup; c, a group of the strigose filaments from the base; d, an ascus with a paraphysis; e, four sporidia. c, d, and e x 400 times.

Fig. 41.-a, Lachnea trechispora, three cups in different stages of growth, nat. size; b, a section of a cup; c, a group of hairs from the exterior of the cup (the bent one is so represented to save space); d, an ascus with a paraphysis; e, two sporidia. c, d, and e x 400 times.

Fig. 42.—a, Lachnea Cornubiensis, two cups the nat. size; b, a section of a cup; c, a group of hairs from the exterior of the cup; d, an ascus containing eight sporidia, with a paraphysis. c and d x 400 times.

Fig. 43.-a, Lachnella diplocarpa, a group the nat. size; b, a cup magnified; c, a section of the same; d, one of the hairs from the exterior of the cup; e, asci paraphyses, and filaments surmounted by fusiform spores (?); ƒ, six sporidia in various conditions of development; g, one of the filaments, surmounted, by its fusiform spore, viewed separately. d, e, f, and g x 400 times.

Fig. 44.-a, Lachnella cerina, a group the nat. size; b, three cups in different stages of growth, magnified; c, section of a cup; d, hairs from near the margin of a cup; e, an ascus with two acerose paraphyses; f, seven sporidia. d, e, and ƒ x 400 times.

PLATE VIII.

Fig. 45.-a, Lachnella cupressi, nat. size; b, two cups slightly magnified; c, a section of a cup; d, the villose hairs from the exterior of a cup; e, ascus with paraphyses; f, six sporidia. d, e, and ƒ x 400 times.

Fig. 46.-a, Lachnella bicolor, a group the nat. size; b, three cups enlarged, in different stages of growth; c, section of a cup; d, three hairs from the exterior of a cup; e, an ascus with two acerose paraphyses; f, five sporidia. d, e, and ƒ × 400 times.

Fig. 47.-a, Lachnella pteridis, a group the nat. size; b, two cups enlarged, one young, the other more mature; c, a section of a cup; d, a group of hairs from the exterior of a cup; e, an ascus with a paraphysis; f, seven sporidia. d, e, and ƒ x 400 times.

Fig. 48.-a, Lachnella hyalina, a group the nat. size; b, two cups in different stages of growth, magnified; c, a section of a cup; d, two asci; e, six sporidia. d and e x 400 times.

Fig. 49.-a, Lachnella rufo-olivacea, the nat. size; b, a cup magnified 10 times; c, a section of a cup; d, loose brown cells from the exterior of a cup; e, two asci, the one filled with coarse granular protoplasm, the other in which the sporidia are matured, with a clavate paraphysis; ƒ, four sporidia in different stages of development, the pseudo-septate ones being the most mature.

Fig. 50.-a, Tapesia aurelia, a group the nat. size seated on a fragment of an oak-leaf; b, two cups enlarged, of different ages, showing the white tapesium from which they arise; c, a section of a cup; d, a portion of the tapesium; e, asci and paraphyses; f, seven sporidia in different stages of growth. d, e, and ƒ × 400 times.

Fig. 51.-a, Desmazierella acicola, three cups nat. size; b, section of a cup magnified, showing the hairy hymenium; c, one of the rigid hairs of the exterior; d, an ascus; e, a bundle of paraphyses divided at the top in the form of bristle-like points, which rise above the surface of the hymenium; f, four sporidia. d, e, and ƒ × 400 times.

Fig. 52.-a, Pirottaa vectis, a group the nat. size; b, two cups magnified; c, a section of a mature cup; d, a group of the rigid bristles from the margin of a cup; e, asci and paraphyses; f, five sporidia in different stages of growth, showing their variable shape. d, e, and ƒ × 400 times.

PLATE IX.

Fig. 53.-a, Boudiera areolata, a group the nat. size: b, b, two cups magnified; c, a section of a cup; d, an ascus with paraphyses; e, sporidia. d and e × 400 times.

Fig. 54.-a, Ascobolus viridis, three cups the nat. size; b, a section of a cup; c, an ascus with paraphyses; d, three sporidia.

Fig. 55.-a, Saccobolus violaceus, a group the nat. size; b, a group slightly magnified; c, a section of a cup; d, asci and paraphyses; e, eight sporidia removed from the ascus and still enclosed in a cell, which was developed within the parent ascus ; f, three sporidia detached from the group. d, e, and ƒ × 400 times.

Fig. 56.-a, Thecotheus Pelletieri, a group the nat. size; b, two cups magnified; c, an ascus filled with sporidia; d, the summit of an