Propagated by seeds and bulbels.
Phaius. Orchideæ.
Division of the bulbs. (See also under [Orchids].)
Phalænopsis. Orchideæ.
These are very slow and difficult to propagate. In the majority of the species it can only be done where a lateral off-shoot is made from the main stem. Some species, such as P. Luddemanniana, and more rarely P. amabilis, P. Stuartiana and P. Schilleriana, develop plantlets on the old flower scapes. By pegging these down on a basket of moss they may be established and afterwards separated. P. Stuartiana and P. deliciosa have been known to produce plants on the roots. Other instances of root-proliferation are recorded in Saccolabium micranthum and a species of cyrtopodium. (See under Orchids.)
Phalaris. Gramineæ.
Propagated by seeds, but the sports by divisions.
Phaleria, Drimyspermum. Thymelæaceæ.
Increased by seeds sown in heat in spring; or by cuttings of the young shoots, which should be inserted in bottom heat.
Pharbitis. See [Ipom]œa.