200 
Salmon . — On Oidiopsis t auric a (Ldv). 
EXPLANATION OF PLATES XIII AND XIV. 
Illustrating Mr. Salmon’s paper on Oidiopsis taurica. 
Fig. i. Part of a branched conidiophore, from an example on Verbascum phlomoides. 
Fig. 2. Conidiophores and conidia of Ovularia obliqua (Cooke), Oud., on Rumex obtusifolius . 
Fig. 3. Portions of the endophytic intercellular mycelium, growing in the mesophyll of a leaf 
of Clematis songarica. 
Fig. 4. Appressorial organs on hyphae of the super ticial mycelium ; to right, from an example 
on Helianthemum oelandicum ; to left, from an example on Verbascum phlomoides. 
Figs. 5, 6, 7. Young conidiophores emerging through a stoma; the subsequent production of 
a lateral branch is shown at x. From an example on Asclepias curassavica. (= Oidiopsis sicula, 
Scalia.) 
Fig. 8. Apical portion of two branched conidiophores, both attacked by Ampelomyces quis- 
qualis. In one case the apical young conidium has been transformed ; in the other, the penultimate 
cell. Lateral branches have begun to be produced from the conidiophore. From an example on 
Verbascum phlomoides. 
Fig. 9. Apical portion of a conidiophore, showing the production of a lateral branch. From 
an example on Ballota rupestris {—Oidium gigasporum, Scalia). 
Fig. 10. Conidia germinating on a leaf of Eryngium campestre (see p, 189). 
Figs. 11, 12. Apical portion of a conidiophore and basal portion of another, from an example 
of the var. lanuginosa on Mimulus glutinosus. 
Fig. 13. A simple conidiophore from the same example, showing the beginning of a lateral 
branch near the base. 
Figs. 14, 15. Apical portions of two branched conidiophores from the same example. 
Fig. 16. A branched conidiophore from an example on Verbascum. 
Fig. 17. Hyphae emerging through a stoma (of the stem) ; one, to right, forming a conidio- 
phore ; one, to left, bearing a young perithecium. From an example on Passerina annua. 
Fig. 18. Hypha of the superficial mycelium sending a branch through a stoma into the interior 
of the leaf. From an example on Ballota rupestris (= Oidiwn gigasporum, Scalia). 
Fig. 19. Apical part of a much-branched conidiophore. From an example on Rut a ( Haplo - 
phyllwn ) Buxbaumii ( = Oidium Haplophylli , P. Magn.), 
Fig. 20. Appressorial organs on hyphae of the superficial mycelium, from an example on 
Zygophyllum Fabago. 
Fig. 21. Ditto; from an example on Ballota rupestris (= Oidium gigasporum, Scalia). 
Fig. 2 2. Conidia of 0 . taurica on 
Phlomis pungens. 
Fig. 22*. 
yy 
Cistus 77 ionspeliensis. 
Fig. 22**. 
yy 
>> 
Zygophyllum Fabago. 
Fig. 23. 
yy 
>> 
V erbascwn Thapsus. 
Fig. 24. 
yy 
>> 
Phlomis Herba-venti. 
Fig. 25. 
yy 
Verbascum Blatta 7 'ia. 
Fig. 26. 
yy 
Pega 7 iU 7 ?i Harmala. 
Fig. 27. 
yy 
„ 
Zygophyllu 77 i Fabago. 
Fig. 28. 
yy 
>5 
Ruta Buxbaumii. 
Fig. 29. 
yy 
,, 
Asclepias curassavica. 
Fig. 30. 
yy 
0 . taurica , var. lanuginosa, on Mimulus glutinosus. 
Fig. 31 - 
yy 
>> 
„ Cho 7 tdi'illa juncea. 
Fig. 32. 
yy 
„ Daucus maximus. 
Fig. 33 - 
yy 
„ Foeniculum vulgare. 
Fig. 34 - 
yy 
0 . taurica on Nepeta podostachys. 
Fig. 35 - 
y> 
yy 
Psoralea drupacea. 
Fig. 36. 
yy 
yy 
Passerina annua. 
Fig. 37 - 
yy 
yy 
Odofitospermu 7 /i aquaticum. 
Fig. 38. 
y y 
y y 
Euphorbia lanata. 
Fig. 39 - 
yy 
yy 
Ballota rttpesiris. 
