Piment-Plante
Chlorotic, sometimes angular spots have formed on these pepper leaves.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Powdery mildew spots on pepper leaves.  Note which are chlorotic, with diffuse to vein-delimited outlines.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Appearance of powdery mildew spots on the underside of a pepper leaf.  Locally, their delimitation by the ribs can be clearly distinguished.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Discreet spots of powdery mildew on pepper leaves.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Detail of spots visible under the blade of a pepper leaf.  Note the presence of a discreet white to greyish down.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Under this pepper leaf, many powdery white spots of powdery mildew have coalesced.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Under the blade of this pepper leaf, <b><i>Leveillula taurica</i></b> has sporulated enormously.  (internal powdery mildew, powdery mildew)
A few bright yellow spots, sometimes angular, dot this tomato leaflet.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Leveillula11
On this tomato leaflet, many spots have finally turned brown and have gradually become necrotic in their center.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
On the underside of the blade of this tomato leaf, the spots are rather yellowish and sometimes have a light brown stippling giving them a dull appearance.  <b><i>Leveillula taurica</i></b> (internal powdery mildew, powdery mildew)
Leveillula11
Numerous chlorotic and vein-delimited broods the underside of this tomato leaflet.  <b><i>Leveillula taurica</i></b> discreetly sporulated in places.  (internal powdery mildew, powdery mildew)
Leveillula15
Microscopie1.jpg
Heavy sporulation of <b><i>Leveillula taurica</i></b> on the underside of a pepper leaf.  (internal powdery mildew, powdery mildew)
Conidiophores and conidia of <b><i>Leveillula taurica</i></b> observed under binocular microscope.  Oidium (powdery mildew)
Conidiophores sometimes bearing pointed conidia of <b><i>Leveillula taurica</i></b>.  (internal powdery mildew, powdery mildew)
Detail of a characteristic conidium of <b><i>Leveillula taurica</i></b> (internal powdery mildew)
Appearance of various conidia of <b><i>Leveillula taurica</i></b> observed under a light microscope.  The first conidia formed are more or less lanceolate and pointed at their end.  The seconds are more or less ellipsoidal to cylindrical.  Their measurements are variable: 30-80 x 12-22 µm.  (oidium, powdery mildew)