. Ornamental cacti : their culture and decorative value . forms are to be foundin collections but are not at all common. They are grouped withreference to their habits of growth. Measurements, where given, referto mature plants and are only approximate. The list, arranged asit is with reference to size, will serve as a guide to prospective pur-chasers in dealing with collectors and traders. Columnar Forms of Cacti. Tall—over 6 feet in height. Cephalocereus: Cereus—Contd. Cereus—Contd. Pilocereus—Contd chrysomalus. euphorbioides. peruvianus. cometes. senilis. forbesii. pringlei. exerens. Cereus
. Ornamental cacti : their culture and decorative value . forms are to be foundin collections but are not at all common. They are grouped withreference to their habits of growth. Measurements, where given, referto mature plants and are only approximate. The list, arranged asit is with reference to size, will serve as a guide to prospective pur-chasers in dealing with collectors and traders. Columnar Forms of Cacti. Tall—over 6 feet in height. Cephalocereus: Cereus—Contd. Cereus—Contd. Pilocereus—Contd chrysomalus. euphorbioides. peruvianus. cometes. senilis. forbesii. pringlei. exerens. Cereus: geometrizans. serpentinus. fulviceps. azureus. giganteus. stellatus. hoppenstedtii. baumannii. hankeanus. thurberi. houlletii. chiotilla. hildrnannianus. weberi. lanuginosus. coerulescens. jamacaru. Opuntia: polylophus. columnaris. macrogonus. cereiformis. russelianus. dumortieri. marginatus. Pilocereus: schottii. eburneus. pecten-aboriginum. chrysacanthus. strictus. 262 Bui. 262, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate 262, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate XVI.
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Keywords: ., bookcentury1900, bookdecade1910, bookidornamentalca, bookyear1912
