PARTICIPIAL PHRASE. Present participles, verbals ending in-ing, and past participles, verbals that end in-ed (for regular verbs) or other forms (for irregular verbs), are combined with complements and modifiers and become part of important phrasal structures.Participial phrases always act as adjectives.ometimes part of the noun phrase is delayed until the end of the sentence so that that portion of the phrase (usually modifying phrases  participial or prepositional) can receive end weight or focus.
Insect borers often attack trees that are weakened or damaged by other causes. In some cases, borers and plant pathogens are associated with the same canker. Leaf drop Leaf drop is generally caused by plant pathogens or environmental problems.
In severe cases, infected fruit may drop. The disease also causes leaf spotting, yellowing, and premature defoliation, as well as small twig cankers.The fungus Spilocaea pyracanthae (Venturia inaequalis), a close relative of the apple scab fungus, is the cause of pyracantha scab.The fungus overwinters on infected leaves and twigs.cab disease on firethorn fruits occurs almost every summer and is visible on infected fruits throughout the fall and winter.