. The botany of crop plants; a text and reference book. Botany, Economic. 5o6 BOTANY OF CROP PLANTS Flowers.^—The flowers are either single or in clusters, and are terminal or axillary. Some are subtended by an involu- cel which resembles the epicalyx of strawberries. This involucre (Fig. 211) consists of three or more bractlets, which may be separate or united. In the marsh mallow {Althcea), the involucre consists of six to nine bractlets united at the. Fig. 212.—Upland cotton (Gossypium hirsutum). Median lengthwise section of flower. X 2. base; in Abutilon, there is none; in Hibiscus, it is
. The botany of crop plants; a text and reference book. Botany, Economic. 5o6 BOTANY OF CROP PLANTS Flowers.^—The flowers are either single or in clusters, and are terminal or axillary. Some are subtended by an involu- cel which resembles the epicalyx of strawberries. This involucre (Fig. 211) consists of three or more bractlets, which may be separate or united. In the marsh mallow {Althcea), the involucre consists of six to nine bractlets united at the. Fig. 212.—Upland cotton (Gossypium hirsutum). Median lengthwise section of flower. X 2. base; in Abutilon, there is none; in Hibiscus, it is of numerous narrow bractlets; and in cotton {Gossypium), there are three large heart-shaped bractlets (Fig. 211). The flowers are regular (Fig. 212), perfect, often large, rarely dioecious or polygamous. There are five sepals (rarely three or four).. 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 & Co
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
