Propagated by cuttings; or by simply laying the leaf on moist sand, and at each indentation upon the margin a plantlet will appear. =Bucco.= See Agathosma. =Buceras.= See Terminalia. =Bucida.= See Terminalia. =Buckbean.= See Menyanthes. =Buckeye.= See Æsculus. =Bucklandia.= _Hamamelideæ._ Increased by cuttings of ripened shoots placed in sandy loam under a hand-glass, in moderate heat. Water carefully, for they are liable to rot off. =Buckthorn.= See Rhamnus. =Buckwheat= (_Fagopyrum esculentum_ and _Tartaricum_). _Polygonaceæ._ Propagated by seeds. =Buffalo Berry.= See Shepherdia. =Bugle.= See Ajuga. =Bugle Lily.= See Watsonia. =Bugwort.= See Cimicifuga. =Bulbine.= _Liliaceæ._ Increased--the bulbous-rooted species by offsets, and the herbaceous sorts by suckers and divisions. Also by cuttings. =Bulbocodium.= _Liliaceæ._ Increased by offsets in a rich, sandy loam. Take up the bulbs, divide and replant them every second year, handling in autumn and renewing the soil or planting in new positions. =Bulbophyllum=, Anisopetalum, Bolbophyllum, Tribrachium. _Orchideæ._ Propagated by division of the pseudo-bulbs. =Bulbospermum.= See Peliosanthes. =Bullrush.= See Typha and Juncus. =Bumalda.= See Staphylea. =Bunchosia.= _Malpighiaceæ._ Propagated by cuttings of ripened shoots, placed in sand under a bell-glass, in moist bottom heat. Good drainage is essential. =Buphthalmum= (Ox-eye). _Compositæ._ Propagated in spring or autumn by divisions. =Bupleurum= (Hare's Ear). _Umbelliferæ._ The annuals by seeds sown in spring out-doors; the herbaceous perennials may be increased by divisions made in autumn or spring, and the greenhouse species by cuttings made in spring. =Burchardia.= _Liliaceæ._ Propagated by offsets or divisions made just previous to potting in spring. It is best to repot annually. Good drainage should be allowed, and the plant must not be potted too firmly. =Burchellia.= _Rubiaceæ._ Increased by cuttings, not too ripe, planted in sand and placed under a hand-glass, in a gentle heat. =Burgsdorffia.= See Sideritis. =Burlingtonia.= _Orchideæ._ Increased by dividing the plant. (See under Orchids.) =Burnet.= _Rosaceæ._ Propagated by seeds and division. =Burning Bush.= See Euonymus. =Bursaria.= _Pittosporeæ._ Increased by young cuttings put in sand under a bell-glass, with a little bottom heat. =Bursera.= _Burseraceæ._ Propagated by cuttings placed under a bell-glass, with bottom heat. =Burtonia.= _Leguminosæ._ Some of the species produce seed in abundance, and these form the best means of increase. By young cuttings, which root freely in sandy soil in a cool house, with a bell-glass over them. =Butcher's Broom.= See Ruscus. =Butomus= (Flowering Rush). _Alismaceæ._