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List of pests and diseases of roses. Rose aphid (Macrosiphum rosae) feeding on buds and shoots. Rose rust (Phragmidium) Two-spotted mite (Tetranychus urticae) on Gardenia. Yellow tea thrips (Scirtothrips dorsalis) Bristly roseslug (Cladius difformis) on the underside of a leaf. Cottony cushion scale (Icerya purchasi)
Macrodactylus subspinosus. Macrodactylus subspinosus is a North American beetle of the family Scarabaeidae. The members of its genus are known as " rose chafers ", not to be confused with the European rose chafer, Cetonia aurata. M. subspinosus occurs from Eastern Canada to Colorado [2] and is considered a pest of many crops and flowers.
Download as PDF; Printable version; Help. Pages in category "Rose diseases" The following 14 pages are in this category, out of 14 total. ... Wikipedia® is a ...
Physonema Lév. (1847) Teloconia Syd. (1921) Trolliomyces Ulbr. (1938) Phragmidium is a genus of rust fungus that typically infects plant species in the family Rosaceae. It is characterised by having stalked teliospores borne on telia each having a row of four or more cells. All species have a caeoma which is a diffuse aecidium lacking a peridium.
Macrosiphum rosae, the rose aphid, is a species of sap-sucking aphids in the subfamily Aphidinae. [1][2] They have a world-wide distribution and infest rosebushes as the main host in spring and early summer, congregating on the tips of shoots and around new buds. Later in the summer, winged forms move to other rose bushes, or to a limited ...
Metopolophium dirhodum, the rose-grain aphid or rose-grass aphid, is a species of sap-sucking insect in the family Aphididae found worldwide. [1] Its primary host is rose, and its secondary host is a grass, including cereals such as wheat, barley, oats and rye. It is an important vector of the barley yellow dwarf virus (BYDV) which causes ...
Rosaceae (/ roʊˈzeɪsiː.iː, - si.aɪ, - si.eɪ /), [4][5] the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera. [6][7][8] The name is derived from the type genus Rosa. The family includes herbs, shrubs, and trees. Most species are deciduous, but some are evergreen. [9]
The reddish stems of this herbaceous perennial are usually simple, erect, smooth, 0.5–2.5 metres (1 + 1 ⁄ 2 –8 feet) high with scattered alternate leaves.The leaves are spirally arranged, entire, narrowly lanceolate, and pinnately veined, the secondary leaf veins anastomosing, joining together to form a continuous marginal vein just inside the leaf margins. [2]: