The Cactaceae : descriptions and illustrations of plants of the cactus family . Fig. 1.—Cereus hexagonus. Cereus hexagonus.—Fig. 2, Flower; Fig. 3, Longitudinal sectionof flower; Fig. 4, Fruit. All It was introduced into England, according to Salm-Dyck, as Cereus karstenii. In our earlier treatment of this species we combined it with C. peruvianus which wenow believe was an error. Cereus hexagonus is confined to northern South America andthe West Indies while C. peruvianus is restricted to southeastern South America. We have seen no Colombian specimens of this species unless we should re
The Cactaceae : descriptions and illustrations of plants of the cactus family . Fig. 1.—Cereus hexagonus. Cereus hexagonus.—Fig. 2, Flower; Fig. 3, Longitudinal sectionof flower; Fig. 4, Fruit. All It was introduced into England, according to Salm-Dyck, as Cereus karstenii. In our earlier treatment of this species we combined it with C. peruvianus which wenow believe was an error. Cereus hexagonus is confined to northern South America andthe West Indies while C. peruvianus is restricted to southeastern South America. We have seen no Colombian specimens of this species unless we should refer hereflowers collected by Dr. Francis W. Pennell from the Sabana of Bolivar (No. 4782). Cereus horridus Otto (Pfeiffer, Allg. Gartenz. 5:37°- l837) and C. thalassinus Ottoand Dietrich (Allg. Gartenz. 6:34. 1838), referred to C. jamacaru by Schumann, probablybelong here. Both are from La Guayra, Venezuela. Cereus thalassinus quadrangularis(Forster, Handb. Cact. 399. 1846) was used as a synonym of C. thalassinus. THE CACTACEAE. Illustrations: Contr. U. S. Nat. Herb. 12
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Keywords: ., bookauthorbrittonn, bookcentury1900, bookdecade1910, bookyear1919
