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Rose rosette disease – This disease is caused by a relatively recently described virus, Rose rosette emaravirus, [10] that is transmitted by an eriophyid, rose leaf curl mite (Phyllocoptes fructiphilus), which inhabits the shoot tips and leaf petal bases of roses, as well as by grafting but not by seed or many other common vectors.
Phalaenopsis (/ ˌ f æ l ɪ ˈ n ɒ p s ɪ s /), also known as moth orchids, [2] is a genus of about seventy species of plants in the family Orchidaceae.Orchids in this genus are monopodial epiphytes or lithophytes with long, coarse roots, short, leafy stems and long-lasting, flat flowers arranged in a flowering stem that often branches near the end.
Phalaenopsis bellina has a fibrous root system, with roots usually emerging near the base of the stem. The root is composed of a spongy outer layer called the velamen , which is responsible for protecting underlying cells from UV rays and physical damage, as well as absorbing water.
List of apple diseases; List of apricot diseases; List of foliage plant diseases (Araceae) List of foliage plant diseases (Arecaceae) List of foliage plant diseases (Araliaceae) List of foliage plant diseases (Araucariaceae) List of foliage plant diseases (Asclepiadaceae) List of asparagus diseases; List of avocado diseases; List of azalea diseases
This is one of the largest collections of public domain images online (clip art and photos), and the fastest-loading. Maintainer vets all images and promptly answers email inquiries. Open Clip Art – This project is an archive of public domain clip art. The clip art is stored in the W3C scalable vector graphics (SVG) format.
The flowers are of unusual shape for the genus and arise between late June to early July from pendulous, many-flowered, 20-30 cm long inflorescences, which exceed the leaves in length. [5] The many-flowered inflorescences resemble a flying swarm of insects. [6] The greenish-yellow flowers with brown bands are 1.2 cm wide.
Sporotrichosis, also known as rose handler's disease, [2] is a fungal infection that may be localised to skin, lungs, bone and joint, or become systemic. [2] [4] It presents with firm painless nodules that later ulcerate. [3] Following initial exposure to Sporothrix schenckii, the disease typically progresses over a period of a week to several ...
Phalaenopsis taenialis, also known as 小尖囊蝴蝶兰 (xiao jian nang hu die lan) in Chinese, [2] is a species of epiphytic orchid occurring from the eastern Himalaya to China . [1] The specific epithet taenialis is derived from the long, flattened roots, which resemble tapeworms. [ 3 ]