. The botany of crop plants; a text and reference book. Botany, Economic. â receptacle branches --corolla^" r>n$ oj an the 'ens âst\jks receptacle . ' scale -ovar\j â. ovar\j wai CNKile Fig. 254.âJerusalem artichoke (Helianthus tuberosus). A, lengthwise section of head, X i; B, ray flower, X 6; C, disk flower, cut lengthwise, X 6. {A after Baillon.) varies in shape from flat to convex or conical. The recep- tacle is naked or there are chaffy scales subtending the flower; its surface is smooth, pitted, or honeycombed. The involu- cral bracts also vary widely in shape, from narrow and sp

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. The botany of crop plants; a text and reference book. Botany, Economic. â receptacle branches --corolla^" r>n$ oj an the 'ens âst\jks receptacle . ' scale -ovar\j â. ovar\j wai CNKile Fig. 254.âJerusalem artichoke (Helianthus tuberosus). A, lengthwise section of head, X i; B, ray flower, X 6; C, disk flower, cut lengthwise, X 6. {A after Baillon.) varies in shape from flat to convex or conical. The recep- tacle is naked or there are chaffy scales subtending the flower; its surface is smooth, pitted, or honeycombed. The involu- cral bracts also vary widely in shape, from narrow and spine- like to broad and leaf-like; they occur in one or more 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