Note.—Plates I., II., IV., VI., VII., VIII., IX., X., were originally by Miss Mary P. Macbride; Plates V., XI., XII., were by Mrs. Hattie J. Douglass; Plates XIII., XIV., XV., XVI., XVII., were by the late Mrs. Bertha E. Linder Pumphrey; Plate III. was the joint work of Mrs. Pumphrey and Miss Macbride. All these, except IV., have been re-drawn for new plates; XVI., with additions, by Miss Margaret Hayes; the remainder by Mr. W. J. Calvin, C. E. Plate XVIII. is by Miss Hayes; Plate XIX. by Miss A. M. Held; Plate XX. by Miss Jane Coventry.
EXPLANATION OF PLATE I
Enteridium splendens Morg., p. 211.
Fig. 1. Æthalium, natural size.
Fig. 1 a. Spore of the same species, × 1400.
Fig. 1 b. Capillitium of the same species, × 420.
Dictydiæthalium plumbeum (Fr.) Rost., p. 215.
Fig. 2. Æthalium, natural size.
Fig. 2 a. Sporangia and spores, × 50 (after Schroeter).
Fig. 2 b. Persistent apices of the peridia.
Lindbladia effusa (Ehr.) Rost., p. 204.
Fig. 3. A group of sporangia, × 30.
Fig. 3 a. A single spore, × 1400.
Tubifera ferruginosa (Batsch) Macbr., p. 206.
Fig. 4. A group of sporangia, × 5.
See also Plate VII., Fig. 8; and Plate XII., Fig. 14.
Cribraria dictydioides Cke. & Balf., p. 222.
Fig. 5. Three sporangia, × 15.
Fig. 5 a. A single sporangium, to show reticulate thickening, × 60.
Fig. 5 b. A spore, × 1400.
Dictydium cancellatum (Batsch) Macbr., p. 230.
Fig. 6. Sporangium, × 30.
Fig. 6 a. A part of the peridial wall, seen from within, × 84.
Ceratiomyxa fruticulosa (Muell.) Macbr., p. 19.
Fig. 7. Three sporiferous pillars, × about 40.
Fig. 7 a. Tip of a single pillar, × 84.
Hemitrichia stipata (Schw.) Macbr., p. 262.
Fig. 8. Sporangia, × 6.
Fig. 8 a. The capillitium of the same species, × 750.
Fig. 8 b. A single spore, × 1000.
EXPLANATION OF PLATE II
Perichaena corticalis (Batsch) Rost., p. 243.
Fig. 1. Sporangia, × 10.
Fig. 1 a. A single spore, as if in section, × 900.
Fig. 1 b. The capillitial thread, × 750.
Lachnobolus occidentalis Macbr., p. 246.
Fig. 2. The sporangia, × 8.
Fig. 2 a. A portion of the capillitium, × 750.
Fig. 2 b. Spores, × 750.
See also 4 and 4 a below.
Arcyria cinerea (Bull.) Pers., p. 254.
Fig. 3. The expanded fructifications, × 5.
Fig. 3 a. Tip of a single capillitium mass, × 40.
Lachnobolus occidentalis Macbr., p. 246.
Fig. 4. A cluster of sporangia, × 3; cylindric type.
Fig. 4 a. Capillitium, × 750; to show characteristic surface of the threads.
Arcyria denudata (Linn.) Pers., p. 253.
Fig. 5. Sporangia, two expanded, one still closed, × 20.
Fig. 5 a. A part of the capillitium of the same species, × 750.
Arcyria nutans (Bull.) Grev., p. 249.
Fig. 6. Expanded capillitium, etc., × 10.
Fig. 6 a. Capillitium, × 750.
Fig. 6 b. A piece of the capillitium thread, × 1400.
Ophiotheca wrightii Berk. & C., p. 241.
Fig. 7. A single sporangium, × 8.
Fig. 7 a. A node of the capillitial thread, × 750.
Fig. 7 b. A spore, × 750.
Oligonema nitens (Lib.) Rost., p. 280.
Fig. 8. A single elater, × 750.
Figs. 8 a and 8 b. Spores, × 1000.
Badhamia macrocarpa Rost., p. 37.
Var. gracilis.
EXPLANATION OF PLATE III
Hemitrichia clavata (Pers.) Rost., p. 264.
Fig. 1. Three sporangia, one closed, × 8.
Fig. 1 b. A single spore, × 1400.
Hemitrichia vesparium (Batsch) Macbr., p. 262.
Fig. 2. Tip of the elater of capillitial thread, × 1400.
Fig. 2 a. A single spore, × 1400.
Trichia iowensis Macbr., p. 269.
Fig. 3. A cluster of sporangia, × 5.
Fig. 3 a. Tip of a branching elater, × 750.
Fig. 3 b. A single spore, × 750.
See also Plate X., Fig. 5.
Hemitrichia serpula Scop., p. 260.
Fig. 4. A plasmodiocarp, × 3.
Fig. 4 a. A single spore, × 1400.
Fig. 4 b. An elater-tip, × 1400.
Trichia inconspicua Rost., p. 268.
Fig. 5. A cluster of sporangia, × 12.
Fig. 5 a. Tip of an elater, × 1400.
Fig. 5 b. A single spore, × 750.
Physarum oblatum Macbr., p. 91.
Fig. 6. A single sporangium, × 20; stipe shown of unusual length.
Fig. 6 a. A single spore, × 1000.
See also Plate XIV., Fig. 3.
Physarum auriscalpium (Cke.) Lister, p. 90.
Fig. 7. A single sporangium, × 20; a New York specimen.
Fig. 7 a. A single spore, × 1000.
Arcyria nodulosa Macbr., p. 252.
Fig. 8. Capillitial thread, × 1200.
EXPLANATION OF PLATE IV
Trichia persimilis Karst., p. 271.
Fig. 1. Var. intermedia, × about 6.
Fig. 1 a. Spore of same species, × 1400.
Fig. 1 b. A second spore to show varying episporic network.
Fig. 1 c. Tip of elater, shows vertical connecting bands.
Trichia decipiens (Pers.) Macbr., p. 276.
Fig. 2. Sporangia, × about 8.
Fig. 2 a. A spore of the same species, × 1400.
Fig. 2 b and 2 c. Elaters of the same species, × about 225.
Trichia varia (Pers.) Rost., p. 270.
Fig. 3. Sporangia, × about 8.
Fig. 3 a. A spore of the same species, × 1000.
Fig. 3 b. An elater of the same species, × 750.
Trichia scabra Rost., p. 271.
Fig. 4. Sporangia, × about 8.
Fig. 4 a. A single spore of the same species, × 1400.
Fig. 4 b. An elater-tip of the same, × 1400.
Trichia favoginea (Batsch) Pers., p. 272.
Fig. 5. Sporangia, × about 8.
Fig. 5 a. A single spore of the same, × 1400.
Fig. 5 b. A single elater-tip of the same, × 1400.
Trichia persimilis Karst., var abrupta Cke., p. 271.
Fig. 6. An elater-tip, × 1400. It will be noticed that the spirals are connected by vertical bars.
Fig. 6 a. A single spore of the same variety, × 1400.
Fig. 6 b. A single spore, from the same sporangium as 6 a.
Fig. 6 c. Trichia persimilis, a single spore, × 1400.
Fig. 6 d. Tip of an elater from the same, × 1400.
EXPLANATION OF PLATE V
Lamproderma arcyrionema Rost., p. 197.
Fig. 1. A single sporangium seen as if in section, × 40.
Fig. 1 a. A single spore, × 1400.
Lamproderma scintillans (Berk. & Br.) List., p. 195.
Fig. 2. A single sporangium seen as in section, × 40.
Fig. 2 a. A single spore, × 1400.
Enerthenema papillatum (Pers.) Rost., p. 190.
Fig. 3. An expanded, blown-out sporangium, × 25.
Lamproderma robustum Ell. & Ev., p.
Fig. 4. A sporangium seen as in section, × 20.
Fig. 4 a. A single spore, × 1000.
Comatricha laxa Rost., p. 177.
Fig. 5. A sporangium seen as if in section, × 40.
Fig. 5 a. A single spore, × 2000.
Diachaea thomasii Rex, p. 188.
Fig. 6. Three sporangia magnified about 15 times.
Fig. 6 a. A single spore of the same species, × 800.
Brefeldia maxima (Fries) Rost., p. 154.
Fig. 7. A group of sporangia, showing columellæ; × 5.
Fig. 7 a. Capillitial threads of the same species, × 300.
Fig. 7 b. Spore of the same species, × 1500.
Amaurochæte fuliginosa (Sowb.) Macbr., p. 149.
Fig. 8. A bit of so-called capillitium, × 300.
Fig. 8 a. A single spore magnified about 1000 times.
EXPLANATION OF PLATE VI
Comatricha typhoides (Bull.) Rost., p. 181.
Fig. 1. A group of sporangia, × 5.
Fig. 1 a. A single spore, × 1600.
Fig. 1 b. Tip of the columella with its branches, × 50.
Comatricha longa Peck, p. 175.
Fig. 2. A single empty sporangium, × 6.
Fig. 2 a. A part of the same taken near the apex, × 60.
Fig. 2 b. A spore, × 1400.
Comatricha aequalis Peck, p. 180.
Fig. 3. A single sporangium, × 10.
Fig. 3 a. The columella and capillitium, × 60.
Fig. 3 b. A single spore, × 1600.
Figs. 3 c and 3 d. Sporangia to which the peridium still adheres, although in 3 c in shreds.
Stemonitis fusca Rost., p. 160.
Fig. 4. A group of sporangia, × 3.
Fig. 4 a. A part of the columella and capillitium, × 60.
Fig. 4 b. A single spore, × 1400.
Stemonitis axifera (Bull.) Macbr., p. 168.
Fig. 5. A group of sporangia, × 3.
Fig. 5 a. A single spore, × 1400.
Fig. 5 b. A part of the capillitium with columella, × 60.
Stemonitis splendens, p. 164.
Fig. 6. A group of sporangia, × 3.
Figs. 6 a and 6 c. Single spores, the latter × 1400.
Fig. 6 b. A part of the columella and branches, × 60.
Fig. 7. A shorter variety of the same species with coarser meshes in capillitium, × 3.
Fig. 7 a. A part of the columella and net, × 60.
EXPLANATION OF PLATE VII
Diachaea splendens Peck, p. 187.
Fig. 1. Sporangia and hypothallus, × 25.
Fig. 1 a. Capillitium, × 50.
Fig. 1 b. Spores, × 900.
Fig. 1 c. Portion of the capillitium, × 150.
Didymium nigripes Fr., p. 123.
Fig. 2. Sporangia, × 30.
Fig. 2 a. A spore, × 1400.
Fig. 2 b. Calcareous crystals from the peridial wall, × 750.
Didymium melanospermum (Pers.) Macbr., p. 121.
Fig. 3. Sporangia, × 10.
Fig. 3 a. A single spore, × about 1000.
Diderma testaceum (Schrad.) Pers., p. 137.
Fig. 4. Sporangia; the first exhibiting the two peridial walls and the spore-mass, × 10.
Fig. 4 a. Spore, × 750.
Fig. 4 b. Capillitial threads, × 750.
Diderma globosum Pers., p. 134.
Fig. 5. Sporangia; the first with the outer peridium broken away, × 10.
Fig. 5 a. A single spore, × 750.
Mucilago spongiosa (Leyss.) Morg., p. 114.
Fig. 6. An æthalium, borne on a grass-stem, natural size.
Fig. 6 a. A spore, × 750.
Fig. 6 b. Capillitium, with surface calcareous crystals, × 750.
Diderma crustaceum Peck, p. 135.
Fig. 7. A mass of clustered sporangia, to show habit of aggregation, natural size.
Tubifera ferruginosa (Batsch) Macbr., p. 206.
Fig. 8. A single spore, × 1400.
EXPLANATION OF PLATE VIII
Diderma floriforme (Bull.) Pers., p. 143.
Fig. 1. Sporangia of various ages, × 5.
Fig. 1 a. Spore of the same species, × 1000.
Fig. 1 b. A capillitial thread, × 1000.
Physarum polycephalum Schw., p. 95.
Fig. 2. The sporangia, × 10.
Fig. 2 a. Spores, × 750.
Fig. 2 b. Capillitium, × 750.
Leocarpus fragilis (Dicks.) Rost., p. 112.
Fig. 3. Sporangia, × 6.
Fig. 3 a. A group of sporangia, natural size, to show habit.
Fig. 3 b. A single spore, × 1800.
Physarella oblonga (Berk. & C.) Morg., p. 109.
Fig. 4. A single sporangium, × 8.
Figs. 4 a and 4 b. Capillitium and spore respectively, × 900.
Craterium leucocephalum (Pers.) Ditmar, p. 105.
Fig. 5. Sporangia, the first closed, × 10.
Physarum sinuosum (Bull.) Weinm., p. 52.
Fig. 6. Plasmodiocarp, natural size; 6 a, × 4; see also Plate XIX., Fig. 15.
Physarum virescens Ditmar, p. 61.
Fig. 7. Groups of sporangia, × 3 and × 8.
Fig. 7 a. Spores, × 750.
Physarum viride Pers., p. 98.
Fig. 8. A single sporangium, × 25; 8 a, reverse.
Fig. 8 b. The same after spore-dispersal.
EXPLANATION OF PLATE IX
Physarum didermoides (Ach.) Rost., p. 78.
Fig. 1. Sporangia, × 15.
Fig. 1 a. A single sporangium open; shows calcareous capillitium, × 15.
Fig. 1 b. Spores, × 900.
Physarum notabile Macbr., p. 80.
Fig. 2. A cluster of sporangia, × 15.
Fig. 2 a. A single sporangium open, × 15.
Fig. 2 b. Spores, × 900.
See also Plate XV., Figs. 2, 2 a, and the frontispiece.
Physarum contextum Pers., p. 56.
Fig. 3. A group of sporangia, × 15.
Fig. 3 a. Spores of the same, × 600.
Physarum cinereum (Batsch) Pers., p. 59.
Fig. 4. A group of sporangia, × 4.
Fig. 4 a. A single sporangium, × 20.
Fig. 4 b. Capillitium of the same, × 240.
Fig. 4 c. Spores, × 450.
Physarum albescens Ellis, p. 86.
Fig. 5. Sporangia, × 5.
See also Plate XVI., Figs. 4 and 4 a.
Fig. 5 a. Spore of the same species, × 450.
Fig. 5 b. Capillitium of the same, × 240.
Physarum serpula Morg., p. 49.
Fig. 6. Plasmodiocarps, about natural size.
Fig. 6 a. A bit of the plasmodiocarp, showing structure, × 6.
Fig. 6 b. A spore of the same species, × 1400.
Physarum leucopus Link., p. 79.
Fig. 7. A single sporangium, × 15.
Fig. 7 a. A spore of the same species, × 900.
Fig. 7 b. A fragment of the capillitium.
EXPLANATION OF PLATE X
Badhamia rubiginosa (Chev.) Rost., p. 43.
Fig. 1. A group of sporangia, × 5.
Fig. 1 a. Two sporangia, same species, × 18, to show persisting capillitium.
Fig. 1 b. Capillitium fragment, × 240.
Fig. 1 c. Spore of the same species, × 750.
Fuligo septica (L.) Gmel.; form laevis, p. 29.
Fig. 2. An æthalium, natural size.
Fig. 2 a. A section of the same, × 10.
Fig. 2 b. A spore of the same, × 750.
Fuligo cinerea Pers., p. 26.
Fig. 3. A small æthalium borne upon a blade of grass, natural size.
See also Plate XXIII.
Fig. 3 a. Capillitial fragment from the same specimen, × 450.
Fig. 3 b. Spores of the same, × about 750.
Didymium minus List., p. 121.
Fig. 4. A single sporangium, × 25.
Fig. 4 a. The capillitium and fragment of the peridium of the same species, × 380.
Fig. 4 b. A spore of the same species, × 1000.
Trichia iowensis Macbr., p. 269.
Fig. 5. Tip of an elater, × 1400.
See also Plate III, 3, 3 a, 3 b.
Badhamia papaveracea Berk. & Rav., p. 42.
Fig. 6. Sporangia, a cluster, × 8.
Fig. 6 a. A cluster of spores, × 400.
Fig. 6 b. A single spore of the same, × 1400.
Reticularia lycoperdon Bull., p. 210.
Fig. 7. A fragment of the capillitium, × 240.
Fig. 7 a. A single spore of the same species, × 1400.
See also Plate XII., Fig. 3.
EXPLANATION OF PLATE XI
Comatricha nigra Pers., p. 178.
Fig. 1. A group of sporangia, × 10.
Fig. 2. A single sporangium as in section, × 60.
Fig. 3. A single spore, × 1600.
Stemonitis confluens Ell. & Cke., p. 158.
Fig. 4. A group of sporangia, × 10.
Fig. 4 a. A thread of capillitium with adhering disk, × 30.
Fig. 5. A spore of the same, × 2000.
Stemonitis webberi Rex, p. 163.
Fig. 6. A group of sporangia, × 4.
Fig. 7. A single sporangium as in section, × 40.
Fig. 8. A single spore, same species, × 1250.
Comatricha suksdorfii Ell. & Ev., p. 178.
Fig. 9. A group of sporangia, × 4.
Fig. 10. A bit of the capillitium, × 60.
Fig. 11. A single spore, × 1600.
Comatricha cæspitosa Sturg., p. 172.
Fig. 12. A cluster of sporangia, × 4.
Fig. 13. The capillitium highly magnified.
Fig. 14. A single spore, × 1600.
EXPLANATION OF PLATE XII
Lindbladia effusa (Ehr.) Rost., p. 204.
Fig. 1. Fructification, natural size.
Fig. 2. Portion of same in section, × 3.
Reticularia lycoperdon Bull., p. 210.
Fig. 3. Residual capillitial structure, the spores blown away; about natural size.
Enteridium splendens Morg., p. 211.
Fig. 4. Fructification, a large one, natural size.
Fig. 5. Same in section, × 3.
Arcyria ferruginea Sauter, p. 253.
Fig. 6. Three sporangia, magnified about 10 times.
Fig. 6 a. A single spore, magnified.
Fig. 6 b. Capillitial thread.
Licea variabilis Schrad., p. 200.
Fig. 7. Sporangia, magnified about 6 times.
Fig. 8. Spore, magnified to show surface characters.
Tubifera casparyi (Rost.) Macbr., p. 207.
Fig. 9. A group of sporangia; shows the pseudo-columellæ; × about 5.
Licea biforis Morg., p. 201.
Fig. 10. Sporangia dehiscent, magnified about 10 times.
Orcadella operculata Wing., p. 203.
Fig. 11. Sporangia, magnified about 30 times.
Cribraria argillacea Pers., p. 218.
Fig. 12. Sporangia, magnified about 10 times.
Fig. 13. A single sporangium, × about 40.
See also Plate XVII., Fig. 1.
Tubifera ferruginosa (Batsch) Macbr., p. 206.
Fig. 14. Sporangia magnified to show apiculate tops. Cf.
Comatricha ellisii Morg., p. 184.
Fig. 15. Sporangium, × 40.
Fig. 15 a. A single spore, × 1000.
Comatricha pulchella (Bab.) Rost, p. 183; vid. p. 284.
Fig. 16. Sporangium, × 20.
Fig. 16 a. A single spore, × 1000.
Comatricha subcaespitosa Peck, p. 185.
Fig. 17. Sporangium, × 20.
Fig. 17 a. A single spore, × 1000.
Comatricha gracilis Wingate, p. 183.
Fig. 18. Sporangium, × 20.