Plants and their ways in South Africa . lowers and their Parts 149 General Method. Usually indefinite Definite . Mixed Kinds of Raceme—Corymb: more or less flat-topped ; : branched stalks;—Simple : Hydrocotyle (definite.) Compound: (or head)—Composites, Cyme—2-sided : dichasium, Spergula, : cincinnus, Lohostemon, Cymose—(Heads and panicles)—Leonotis,Olive. Bracts.—In examining flower arrangements, the flowersare usually found protected by one or more leaf-like bodies,green or coloured, whichmay h
Plants and their ways in South Africa . lowers and their Parts 149 General Method. Usually indefinite Definite . Mixed Kinds of Raceme—Corymb: more or less flat-topped ; : branched stalks;—Simple : Hydrocotyle (definite.) Compound: (or head)—Composites, Cyme—2-sided : dichasium, Spergula, : cincinnus, Lohostemon, Cymose—(Heads and panicles)—Leonotis,Olive. Bracts.—In examining flower arrangements, the flowersare usually found protected by one or more leaf-like bodies,green or coloured, whichmay have been mistakenfor the calyx. In G/a-diolus^ Antholyza, andtheir relatives, this mis-take is often made, butyou will find that in theseflowers the sepals are likepetals, and are borne atthe top of the ovary. Leaves in whose axilsflower-buds instead ofleaf-buds arise, are termedbracts. They are gener-ally smaller than leaves,but sometimes muchlarger and more showythan the flowers, as inProtea, Poinsettia, and Hc^ Fig. 145.—Flower and fruit of the Olive,showing a definite or cymose panicle(see p. 147)- When several bractssurround a head of flowers, as in Protea, the Barberton Daisy,and others of their tribe, they form an involucre. When a bract is large and sheaths the inflorescence, as inArum, it is called a spathe. Bracts which enclose the flowersof grasses and sedges are called pales and glumes. 150 Plants and their Ways in South Africa
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1915
