. The botany of crop plants : a text and reference book. Botany, Economic. 634 BOTANY OF CROP PLANTS inches below the head. The heads are purple and open, early in the morning but usually close by noon. The in- volucre is cylindrical, the bracts nearly equal, in one series, linear-lanceolate, and usually much longer than the rays of the flowers. The corollas (Fig. 260) are truncate and five-. FiG. 261.—Salsify (Tragopogon porrifolius). Headin fruit; receptacle after having shed the achenes; single achene. toothed at the apex. The anthers are sagittate at the base. The style branches are slende
. The botany of crop plants : a text and reference book. Botany, Economic. 634 BOTANY OF CROP PLANTS inches below the head. The heads are purple and open, early in the morning but usually close by noon. The in- volucre is cylindrical, the bracts nearly equal, in one series, linear-lanceolate, and usually much longer than the rays of the flowers. The corollas (Fig. 260) are truncate and five-. FiG. 261.—Salsify (Tragopogon porrifolius). Headin fruit; receptacle after having shed the achenes; single achene. toothed at the apex. The anthers are sagittate at the base. The style branches are slender. Achenes are linear, and termi- nated by slender beaks, the outer ones being covered with tubercles, particularly on the ribs below. The pappus is grown together at the base, is plumose, and has interwebbed branches (Fig. 261).. 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
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
