110 A PLANT-DISEASE SUBVEY IN TEXAS. 



Plate IV. Species of Cercospora from various hosts, No. 4. Fig. 1.— Conidio- 

 phores and spores of Cercospora sagittariae Ell. and Ev. on Saggitaria sp. 

 Fig. 2. — Conidiophores and spores of C. crataegi Heald and Wolf on haw- 

 thorn (Crataegus sp.). Fig. 3. — Conidiophores and spores of C. malachrae 

 Heald and Wolf on mallow (Malachra capitata L.). Fig. 4. — Spores of 

 C. elaeagni Heald and Wolf on Elaeagnus sp. Fig. 5. — Conidiophores and 

 spores of C. physalicola Ell. and Barthol. on ground-cherry (Physalis sp.). 

 Fig. 6. — Conidiophores and spores of C. moricola Cke. on red mulberry 

 (Morus rubra L.). Fig. 7. — Conidiophores and spores of C. capsici Heald 

 and Wolf on pepper (Capsicum annuum L.). 



Plate V. Various genera of Fungi Imperfecti on different hosts. Fig. 1. — Coni- 

 diophores and spores of Ramularia momordicae Heald and Wolf on the 

 balsam-apple (Uomordica balsamina L.). Fig. 2. — Conidiophores and spores 

 of R. cassiaecola Heald and Wolf on senna (Cassia occidentalis L.). 

 Fig. 3. — Spores of Stagonospora gigantea Heald and Wolf on century plant 

 (Agave americana L.). Fig. 4. — Spores of Ramularia cephalanthi (Ell. 

 and Kellerm.) Heald on buttonbush (Cephalanthus occidentalis L.). Fig. 

 5. — Conidiophores and spores of R. hedericola Heald and Wolf on English 

 ivy (Hedera helix L.). Fig. 6. — Spores of Sporodesmium maclurae Thm. 

 on Osage orange (Toxylon pomiferum Raf.). Fig. 7. — Pycnidium and 

 spores of Phleospora multimaculans Heald and Wolf on the sycamore 

 (Platanus occidentalis L.). Fig. 8. — Section of a pycnidium of Phyllosticta 

 biformis Heald and Wolf on leaf of Mexican persimmon (Diospyros texana 

 Sheele). X 73. Fig 9. — Section of a pycnidium of P. biformis Heald and 

 Wolf from the fruit of D. texana Sheele. X 73. Fig. 10.— Section of 

 a pycnidium and spores of Phleospora adusta Heald and Wolf on virgin's- 

 bower (Clematis drummondii T. and G.). Fig. 11. — Section of a pycnidium 

 and spores of P. multimaculans Heald and Wolf on walnut (Juglans sp.). 



Plate VI. Species of Colletotrichum, Cylindrosporium, and Septoria on various 

 hosts. Fig. 1. — Group of spores of Colletotrichum griseum Heald and 

 Wolf on Euonymus japonicus Thunb. Fig. 2. — Portion of the acervulus of 

 C. griseum Heald and Wolf on E. japonicus Thunb. Fig. 3. — A single acer- 

 vulus showing distribution of setae of C. griseum Heald and Wolf. X 73. 

 Fig. 4. — Spores of Cylindrosporium solitarium Heald and Wolf on black 

 locust (Robinia pseudacacia L.). Fig. 5. — Spores of Cylindrosporium lip- 

 piae Heald and Wolf on Lippia ligustrina (Lag.) Britton. Fig. 6. — Acervulus 

 of Colletotrichum caulicolum Heald and Wolf on bean (Phaseolus vul- 

 garis L.) X73. Fig. 7. — Conidiophores, conidia, and setae of C. caulicolum 

 Heald and Wolf. Fig. 8. — Distribution of acervuli (a) of C. caulicolum on 

 stem of bean (Phaseolus vulgaris L.). Natural size. Fig. 9. — Acervulus 

 of Cylindrosporium defoliatum Heald and Wolf on the hackberry (Celtis 

 laevigata Willd.). Fig. 10. — Depressed acervulus bearing spores with 

 two septate spores of C. defoliatum Heald and Wolf on C. laevigata 

 Willd. Fig. 11. — Spores of C. griseum Heald and Wolf on wild China tree 

 (Sapindus drummondii Hook, and Arn.). Fig. 12. — A small portion of a 

 leaf showing acervuli (a) of C. griseum Heald and Wolf on the veins of 

 8. drummondii Hook, and Arn. ) . X 73. Fig. 13. — Seta, conidiophores, and 

 conidia of Colletotrichum on sorghum (Andropogon sorghum (L.) Brot). 

 Fig. 14. — Spores of Colletotrichum on A. sorghum (L.) Brot. Fig. 15. — 

 Portion of the acervulus and a group of spores of Colletotrichum on Johnson 

 grass (A. halepensis (L.) Brot.). Fig. 16. — Several pycnidia of Septoria 

 pertusa Heald and Wolf on Johnson grass (A. halepensis (L.) Brot.). 

 X 73. Fig. 17. — A single pycnidium of 8. pertusa Heald and Wolf. (a. 

 Ostiole and protruding spores ; 6, a group of four spores. ) 

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