. The botany of crop plants : a text and reference book. Botany, Economic. 262 BOTANY OF CROP PLANTS reality stipules belonging to leaves which, normally, do not develop. Each of the lateral branches bears four pis- tillate flowers. Below each flower is a single bracteole (small bract). Hence, examination of a single lateral axis or branch shows it to be made up of the following parts, from below upwards: (i) two bract-like stipules; (2) brac-. iUgmas -brnct-Jille J)nic\eok perianih Fig. 104.—Hop (Humulus lupulus). A, single staminate flower; B, two pistillate flowers with bracteoles and bract
. The botany of crop plants : a text and reference book. Botany, Economic. 262 BOTANY OF CROP PLANTS reality stipules belonging to leaves which, normally, do not develop. Each of the lateral branches bears four pis- tillate flowers. Below each flower is a single bracteole (small bract). Hence, examination of a single lateral axis or branch shows it to be made up of the following parts, from below upwards: (i) two bract-like stipules; (2) brac-. iUgmas -brnct-Jille J)nic\eok perianih Fig. 104.—Hop (Humulus lupulus). A, single staminate flower; B, two pistillate flowers with bracteoles and bract-like stipule. (B after Wossidlo.) teole and first flower; (3) bracteole and second flower; (4) bracteole and third flower; (5) bracteole and fourth flower. Flowers.—The staminate flowers (Fig. 104, A) measure about 6 millimeters in diameter. They have a five-parted calyx, no corolla, and five stamens opposite the calyx lobes. Each pistillate flower (Fig. 104, B) is subtended by a single bracteole (Fig. 105, A) that partially encloses it at maturity. It has a single ovary surrounded by a cup-shaped perianth. There is one style with two long stigmas, which are covered their full length with Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Robbins, Wilfred William, 1884-1952. Philadelphia : P. Blakiston's Son
Size: 1545px × 1617px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
