. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. INFLOEESCBNCE OR ANTHOTAXIS. 173 any confusion that might arise from the use of the terms rachis. peduncle, aiid pedicel. The Peduncle may be cylindrical, compressed, or grooved ; simple, bearing a single flower, as in Prim- fose j or branched, as in London-pride. It is some times succulent, as in the Gashew (fig. 248 p), in which it forms the large coloured expansion sup- porting the nut; spiral, as in Cyclamen and Val- iisneria (fig. 249); pr spiny, as in Alyssum spi
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. INFLOEESCBNCE OR ANTHOTAXIS. 173 any confusion that might arise from the use of the terms rachis. peduncle, aiid pedicel. The Peduncle may be cylindrical, compressed, or grooved ; simple, bearing a single flower, as in Prim- fose j or branched, as in London-pride. It is some times succulent, as in the Gashew (fig. 248 p), in which it forms the large coloured expansion sup- porting the nut; spiral, as in Cyclamen and Val- iisneria (fig. 249); pr spiny, as in Alyssum spinosum, /. Fig. 248. Fig. 249. In some rushes there is a green terete and sometimes spiral floral axis (fig. 190). Sometimes the peduncle proceeds from radical leaves; that is, from an axis which is so shortened as to bring the leaves close together in the form of a cluster, as in the Primrose, Auricula, Hyacinth, etc. In such cases it is termed a scape. The floral axis may be shortened, assuming a flattened, convex, or concave form, and bearing numerous flowers, as in the Artichoke, Daisy, and Fig. In these cases it is called a Beceptacle or Phoranthium (pogsw, I bear, and an^os, flower), or Clinanthium {xk'nri, a bed, and S,vki;, flower). The Floral axis sometimes assumes a leaf- like or phylloid (^ipvXXov, a leaf, and iTdog, form) appearance, bearing numerous flowers at its margin, as in Xylophylla longifolia (flg. 250), and in Euscus ; or it appears as if formed by several peduncles united together, constituting a fasciated axis, as in the Cockscomb (fig. 251), in which the flowers form a peculiar crest at the apex of the flattened peduncles. Adhe- sions occasionally take place between the pedimcle and the bracts or leaves of the plant, as in the Lime tree, Helwingia, Chailletia, several species of Hibiscus, and in Zostera. The adhesion of the peduncles to the stem Fig. 248. 'Emit of C&siiew (Anaccurdivm ocGid&ntale). ^, Enlarged peduncle, a. Fruit, or nut. Pig. 249.
Size: 1780px × 1404px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
