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Erysiphe Stock Photos and Images
RM2PG09WP–Umbellifer Powdery Mildew, Erysiphe heraclei, on Common Hogweed (Heracleum sphondylium), secondary host, Berkshire, England, United Kingdom
RM2CGWY48–Close-up shot of Oak leaves covered with a powdery mildew, perhaps caused by fungus Erysiphe alphitoides / Microsphaera alphitoides. Plant disease.
RM2AXHG20–Nature and development of plants . needle-like appendages enlarged at the base. B, Micro-sphaera, appendages dichotomous at apex. C, Uncinula, appendages coiledat apex. D, Erysiphe without appendages and crushed to show escapingasci. E, an ascus containing six ascospores. mucilaginous and may assist in the dissemination of the asco-carps. The ascospores are resting spores adapted to enduringdrought and cold as in Penicillium, which they resemble in theirdischarge and germination. 87. Forms with Slightly Opened Ascocarps.—Several ordersof the Ascomycetes are distinguished from the preceding gro
RM2D6DP70–Cucurbita pepo. Powdery mildew, fungal disease causing a white dust-like coating on a courgette plant. UK
RF2RX2B3B–Garden phlox plants infected by Erysiphe cichoracearum fungus causing powdery mildew coating on the leaf's surface.
RF2K5H4TP–Powdery mildew on Garden Phlox leaves close-up. Fungal disease with powdery gray or white spots or coating on plants.
RM2PPWFFD–Powdery mildew, a common disease on Euonymus, caused by the fungus, Oidium euonymi-japonici
RF2NFTHTT–Fungal plant disease Powdery Mildew on a pea leaves and stems. Infected plant displays white powdery plaque and spots on the leaves.
RF2KFM7FH–Powdery mildew on the parsley leaf. This is a dangerous plant disease that causes yield losses.
RM2CGWY4G–Close-up shot of Oak leaves covered with a powdery mildew, perhaps caused by fungus Erysiphe alphitoides / Microsphaera alphitoides. Plant disease.
RF2T08KTE–Oak leaves with powdery mildew fungus / leaf pathogen - possibly Erysiphe alphitoides. Commonly seen Autumn time. Focus on white patch about 9 o'clock
RF2PRDF4C–Garden phlox plants infected by Erysiphe cichoracearum fungus causing powdery mildew coating on the leaf's surface.
RM2AN4B5R–Fungi, Ascomycetes, Ustilaginales, Uredinales . Fg- 45- Phyllactinia Corylea (Pers.) Karst.; peri-thecium containing uninucleate asci;after Harper. Fig. 46. Phyllactinia Corylea(Pers.) Karst.; a. b. fusion inascus; after Harper. Eight chromosomes (fig. 47) have been observed throughout the life-history. In Phyllactinia Corylea and also in Microsphaera AIni(Sands, 1907) andvarious species of Erysiphe (Harper, 1905), the organization of the restingnucleus is very characteristic. A deeply staining central body lies againstthe nuclear membrane and to this the chromatin threads are attached.From it
RM2D6DPE4–Cucurbita pepo. Powdery mildew, fungal disease causing a white dust-like coating on a courgette plant. UK
RF2K5CR7E–Powdery mildew on Garden Phlox leaves close-up. Fungal disease with powdery gray or white spots or coating on plants.
RM2PPWFDA–Powdery mildew, a common disease on Euonymus, caused by the fungus, Oidium euonymi-japonici
RF2RTXJ2E–Fungal plant disease Powdery Mildew on a pattypan squash bush (pattypan, scallop squash, patisson). White plaque on the leaves. Infected plant
RME61WGA–Oak (Quercus robur). Young tree that has been pruned, foliage covered in Powdery Mildew (Erysiphe alphitoides).
RF2KF0F2X–Fungal plant disease Powdery Mildew on a pattypan squash leaf (pattypan, scallop squash, patisson). White plaque on the leaf. Infected plant.
RMPG0RF0–. Fungoid and insect pests of the farm. Agricultural pests. 50 Mildews [CH.. Kg. 17. Erysiphe graminu. A, conidiophores bearing conidia; B, a spore case with appendages; C, a spore case which has burst showing the asci and ascospores. (Magnified.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Petherbridge, Frederick Robert. Cambridge : University Press
RMDF6TPE–marrow ripening in last sunny rays of Summer crop ripening hidden beneath a mass of protective leaves in field
RF2KFM7FD–Powdery mildew on the parsley leaf. This is a dangerous plant disease that causes yield losses.
RMMCK9KN–. Fig. 17.—Ehizoctonia stem rot of bean. (From Ext. Cir. 119.) possible. The seed field should then be carefully rogued by pulling out every plant which shows mosaic as soon as it can be detected. Powdery Mildew.—A gray mildew, Erysiphe polygoni, sometimes de-
RF2T08KYX–Oak leaves with powdery mildew fungus / leaf pathogen - possibly Erysiphe alphitoides. Commonly seen Autumn time. Focus on lower leaf / & leftish
RF2RTW1JT–Garden phlox plants infected by Erysiphe cichoracearum fungus causing powdery mildew coating on the leaf's surface.
RM2AN4AN2–Fungi, Ascomycetes, Ustilaginales, Uredinales . Fg- 45- Phyllactinia Corylea (Pers.) Karst.; peri-thecium containing uninucleate asci;after Harper. Fig. 46. Phyllactinia Corylea(Pers.) Karst.; a. b. fusion inascus; after Harper. Eight chromosomes (fig. 47) have been observed throughout the life-history. In Phyllactinia Corylea and also in Microsphaera AIni(Sands, 1907) andvarious species of Erysiphe (Harper, 1905), the organization of the restingnucleus is very characteristic. A deeply staining central body lies againstthe nuclear membrane and to this the chromatin threads are attached.From it
RM2D6DPT3–Cucurbita pepo. Powdery mildew, fungal disease causing a white dust-like coating on a courgette plant. UK
RF2K5CPYY–Powdery mildew on Garden Phlox leaves close-up. Fungal disease with powdery gray or white spots or coating on plants.
RME61WPK–Oak (Quercus robur). Young tree that has been pruned, foliage covered in Powdery Mildew (Erysiphe alphitoides).
RMPG3Y24–. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. 226 DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. The course of development in Eurotium and Penioilliimi may be described in the same words as in Erysiphe, making allowance for differences of form and for the circumstance that the species in the two last genera are not epiphytic parasites, but (for the most part) inhabit dead organic bodies; here too we find frequent absence of sporocarps where the vegetative conditions are not altogether favourable. The gonidiophores
RMDF6TNB–masses of marrow flowers on a single plant ready for development and growth into mature vegetables
RF2KFM750–Powdery mildew on the parsley leaf. This is a dangerous plant disease that causes yield losses.
RME4D324–Squash courgette marrow organic crop flowering Summer crop ripening hidden beneath a mass of protective leaves in field
RMDF6TTY–Pumpkin marrow ripening in last sunny rays of Summer crop ripening hidden beneath a mass of protective leaves in field
RF2T08KT3–Oak leaves with powdery mildew fungus - possibly Erysiphe alphitoides. Commonly seen Autumn time. Focus on leaf surface just below 9 to 3 horizon.
RF2WK829E–Cucurbit powdery mildew on zucchini is a fungal disease of zucchini, the culprits of which are fungal pathogens: Erysiphe cichoracearum and Sphaerothe
RF2PRDP81–Garden phlox plants infected by Erysiphe cichoracearum fungus causing powdery mildew coating on the leaf's surface.
![. W'^. Fig. 8 ASCOMYCETES 1. Peziza. 2. Balansia trinitensis. 3. Scleroderris. 4. Perithecia and Conidia of an Erysiphe. 5. Nectria 6. Xylaria. 7. Hypoxylon. 8. Pseudovalsa. From Engler & Prantl. Nat. Pflanz. Perisporiacese (which include the fungi of "black blight") have mycelium which is superficial on the host plant, commonly on leaves, and have the asci enclosed in more or less spherical Stock Photo](https://c8.alamy.com/comp/MCNHP8/w-fig-8-ascomycetes-1-peziza-2-balansia-trinitensis-3-scleroderris-4-perithecia-and-conidia-of-an-erysiphe-5-nectria-6-xylaria-7-hypoxylon-8-pseudovalsa-from-engler-amp-prantl-nat-pflanz-perisporiacese-which-include-the-fungi-of-quotblack-blightquot-have-mycelium-which-is-superficial-on-the-host-plant-commonly-on-leaves-and-have-the-asci-enclosed-in-more-or-less-spherical-MCNHP8.jpg ". W'^. Fig. 8 ASCOMYCETES 1. Peziza. 2. Balansia trinitensis. 3. Scleroderris. 4. Perithecia and Conidia of an Erysiphe. 5. Nectria 6. Xylaria. 7. Hypoxylon. 8. Pseudovalsa. From Engler & Prantl. Nat. Pflanz. Perisporiacese (which include the fungi of "black blight") have mycelium which is superficial on the host plant, commonly on leaves, and have the asci enclosed in more or less spherical Stock Photo")
RMMCNHP8–. W'^. Fig. 8 ASCOMYCETES 1. Peziza. 2. Balansia trinitensis. 3. Scleroderris. 4. Perithecia and Conidia of an Erysiphe. 5. Nectria 6. Xylaria. 7. Hypoxylon. 8. Pseudovalsa. From Engler & Prantl. Nat. Pflanz. Perisporiacese (which include the fungi of "black blight") have mycelium which is superficial on the host plant, commonly on leaves, and have the asci enclosed in more or less spherical
RM2AXH37N–The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects . garden lots, and especi-ally where the plants do not receive anywater, the disease is practically unimpor-tant since the attack is usually very mildduring the active growing season, thoughit becomes somewhat more abundant whenthe plants have passed all usefulness.Massee attributes the Sweet Pea1 mildewin England to Erysiphe polygoni. Thusfar only the conidal or oidium stage has drawn from the noe-sncce6s of such, a cross.For instance, it is known, that Sir MichaelFoster tried many times to obtain hybr
RMT1HH84–Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 PODOSPHAERA. 175 P. myrtillina Schub. ou leaves of Vacdnium MyrfiUus (bil- berry), V. aligiiiosum, and Jnipctrmn nigrum (crowberry), (U.S. America). Erysiphe. The perithecia contain several asci, each with two to eight oval hyaline spores. The appendages are like these of Sphae- rotluca, simple and thread-like. Erysiphe graminis D. C. Mould or mildew of grass and wheat, (xrass and cereals, especially
RM2D6DPTC–Cucurbita pepo. Powdery mildew, fungal disease causing a white dust-like coating on a courgette plant. UK
RFPPFYBT–powdery mildew in the form of white spots cover the leaves of young maple. fungal disease of plants. Powdery mildew on Maple. Maple tree fungal diseas
RMPG4EN7–. Diseases of economic plants . Plant diseases. VEGETABLE AND FIELD CROPS 221 Powdery mildew (Erysiphe polygoni DC.)- — This mildew of the cucumber and cantaloupe in general appearance resembles that described for the grape. It is more com- mon under glass than in the open, and here indicates too much moisture and too little ven- tilation. It is sel- dom injurious in the field. Flowers of sul- phur applied to the hot water or steam pipes in the form of a paste is useful. Leaf blight, cer- cosporose {Cercos- pora Cucurbitoe Ell. &Ev.). —The spots of this disease are much hke those of altern
RMDF6TRW–Pumpkin marrow ripening in last sunny rays of Summer crop ripening hidden beneath a mass of protective leaves in field
RF2WK829K–Cucurbit powdery mildew on zucchini is a fungal disease of zucchini, the culprits of which are fungal pathogens: Erysiphe cichoracearum and Sphaerothe
RF2RTW1JN–Garden phlox plants infected by Erysiphe cichoracearum fungus causing powdery mildew coating on the leaf's surface.
RM2AJ3FFP–The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects . ed to be iden-tical with the species under review, which in 1882received the name Cerataphis Latanise from Licbten- Finally, experiments were made en Erysiphe Poly-goni from Trifolium pratensc, which proved unable toinfect Beven other speries of Trifolium, but it alwayssucceeded on its own host plant. Species of otherLeguminosic, Lotus corniculatus, Medicago sativa.Melilotus arvensis, Lupinus luteus. and Pinum sativumwere also immune. READING & DISTRICT GARDENERSMUTUAL IMPROVEMENT. At a recent meeting
RM2D6DPX6–Cucurbita pepo. Powdery mildew, fungal disease causing a white dust-like coating on a courgette plant. UK
RME4D2WX–Squash courgette marrow organic crop flowering Summer crop ripening hidden beneath a mass of protective leaves in field
RMMCK9G8–. ¥ Fig. 33.—Spotted wilt of sweet pea causing so-called streak disease. The disease, caused by a virus, is spread by the pea aphid, Illinoia pisi. The spread of mosaic may be delayed by dusting with nicotine to keep down the aphids. Powdery Mildew.—The leaves and buds become covered with a white, powdery fungus, Erysiphe polygoni, which causes stunting of the growth and worthless flowers. To control, dust frequently with dry, powdered sulfur, beginning before mildew develops. This may be combined with nicotine dust for aphids.
RMT1HA02–Diseases of cereal and forage Diseases of cereal and forage crops in the United States in 1921 diseasesofcereal21stak Year: 1922 OATS - Smuts 215 Powdery rrdldev/ caused by Erysiphe graminis DC. - reported to te very prevalent in Nev; York where, on account of the early warm spring, the damage reached 1., according to Kirby; cird was reported once in Oregon, in a moist draw in a field at I'oro. Leaf spoi. cdused by Septoria passerinii Sacc . This has been reported from V.'isconsin. (V.'eber, George F. Studies on Septoria diseases of cereals and certain grasses. (Abstract). Phytopath. 12: 44.
RFPPFYBW–powdery mildew in the form of white spots cover the leaves of young maple. fungal disease of plants. Powdery mildew on Maple. Maple tree fungal diseas
RMPG0RF5–. Fungoid and insect pests of the farm. Agricultural pests. 48 Mildews [CH. considering in the present chapter are spoken of as Powdery or Triie Mildews. The true mildews comprise a large number of different species. One of the commonest and also one which wiU serve as an example of the group is the well-known mildew of grasses and cereals, Erysiphe graminis.. We shall have Uttle difficulty in finding specimens of this disease in cornfields during the. Mg. 16. Wheat plant attacked by Erysiphe graminis. spring, especially if the weather has been dull or wet. In drier seasons it may be found in
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