|
Broomrape
''Orobanche'', commonly known as broomrape, is a genus of over 200 species of small Parasitic plant, parasitic herbaceous plants, mostly native to the temperate climate, temperate Northern Hemisphere. It is the type genus of the Orobanchaceae, broomrape family Orobanchaceae. Description Broomrapes are generally small, only tall depending on species. They are best recognized by the yellow- to straw-coloured stems completely lacking chlorophyll, bearing yellow, white, or blue Antirrhinum, snapdragon-like flowers. The flower shoots are scaly, with a dense terminal spike of 10-20 flowers in most species, although single in Orobanche uniflora, one-flowered broomrape (''Orobanche uniflora''). The leaves are merely triangular scales. The seeds are minute, tan or brown, blackening with age. These plants generally flower from late winter to late spring. When they are not flowering, no part of the plants is visible above the surface of the soil. Parasitism As they have no chlorophyll, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Minor
''Orobanche minor'', the hellroot, common broomrape, lesser broomrape, small broomrape or clover broomrape, is a holoparasitic flowering plant belonging to the family Orobanchaceae. It is one of about 150 non-photosynthetic plants in the genus ''Orobanche'' that parasitize autotrophic plants. Characteristics and growth requirements ''Orobanche minor'' grows to and is a perennial. The flowers are hermaphrodite. Common broomrape grows in a wide variety of soils, namely moist, light (sandy), medium (loamy) and heavy (clay) soils that are acid, neutral or basic. It can grow in semi-shade or in full sunlight. The species appears in a wide range of colours from red-brown, yellow-brown to purple. Yellow specimens are also not uncommon and it is this extreme variability that makes identification on the basis of size or colour uncertain. It is parasitic on various members of the pea (Fabaceae) and daisy (Asteraceae) families. Although widespread, its appearance is sporadic; despite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Ramosa
''Orobanche ramosa'' is a species of broomrape known by the common names hemp broomrape and branched broomrape. It is native to Eurasia and North Africa, but it is known in many other places as an introduced species and sometimes a noxious weed. It is a pest in agricultural fields, infesting crops including tobacco, potato, and tomato. The plant produces many slender, erect stems from a thick root. The yellowish stems grow 10 to 60 centimeters tall and are coated in glandular hairs. The broomrape is parasitic on other plants, draining nutrients from their roots, and it lacks leaves and chlorophyll. The inflorescence bears several flowers, each in a yellowish calyx of sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coine ...s and with a tubular white and blue to purple corolla. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |