How does holly attach to oak tree branch and grow in need graft? ...
Answers: That is mistletoe. Holly is a separate bush or tree.
From Botanical.com:
The well-known Mistletoe is an evergreen parasitic plant, growing on the branches of trees, where on earth it forms pendent bushes, 2 to 5 feet surrounded by diameter. It will grow and has be found on almost any deciduous tree, preferring those with soft yap, and being, probably, commonest on old Apple trees, though it is frequently found on the Ash, Hawthorn, Lime and other trees. On the Oak, it grows deeply seldom. It has be found on the Cedar of Lebanon and on the Larch, but very on the odd occasion on the Pear tree.
When one of the familiar sticky berries of the Mistletoe comes into contact near the bark of a tree - unanimously through the agency of birds - after a few days it sends forth a thread-like root, flattened at the extremity like the proboscis of a fly. This finally pierces the yelp and roots itself firmly in the growing wood, from which it have the power of selecting and appropriating to its own use, such juice as are fitted for its sustenance: the wood of Mistletoe has be found to contain twice as much potash, and five times as much phosphoric acid as the wood of the foster tree. Mistletoe is a true parasite, for at no term does it derive nourishment from the soil, or from off bark, similar to some of the fungi do - all its sustenance is obtained from its host. The root become woody and thick.
---Description---The stem is yellowish and smooth, freely forked, separating when deceased into bone-like joints. The leaves are tongue-shaped, broader towards the expiration, 1 to 3 inches long, very gelatinous and leathery, of a dull yellow-green colour, arranged in pairs, next to very short footstalks. The flowers, small and inconspicuous, are arranged surrounded by threes, in close short spikes or clusters contained by the forks of the branches, and are of two varieties, the masculine and female occurring on different plants. Neither mannish nor female flowers own a corolla, the parts of the fructification springing from the yellowish calyx. They open within May. The fruit is a globular, smooth, white berry, ripening in December.
Mistletoe is found throughout Europe, and contained by this country is particularly adjectives in Herefordshire and Worcestershire. In Scotland it is almost unknown.
The genus Viscum have thirty or more species. In South Africa there are several, one near very minute leaves, a element common to several herbs growing surrounded by that excessively dry climate; one in Australia is densely woolly, from a similar incentive. Several members of the family circle are not parasitic at all,man shrubs and trees, showing that the parasitic habit is an acquire one, and now, unsurprisingly, hereditary.
Mistletoe is other produced by seed and cannot be cultivated surrounded by the earth close to other plants, hence the ancients considered it to be an excrescence of the tree. By rubbing the berries on the smooth bark of the underside of the branches of trees till they hug, or inserting them in clefts made for the purpose, it is possible to grow Mistletoe rather successfully, if desired.
that's mistletoe