. Carnegie Institution of Washington publication. SELENICEREUS. 199 3. Selenicereus coniflorus (Weingart) Britton and Rose, Contr. U. S. Nat. Herb. 12: 430. 1909. Cereus coniflorus Weingart, Monatsschr. Kakteenk. 14: 118. 1904. Cereus nycticalus armatus Schumann, Gesamtb. Kakteen 147. 1897. Selenicereus pringlei Rose, Contr. U. S. Nat. Herb. 12: 431. 1909. Cereus jalapaens is Vaupel, Monatsschr. Kakteenk. 23: 26. 1913. vStems high-climbing, giving off numerous aerial roots, pale green, becoming purplish along the ribs, 5 or 6-ribbed; intervals between the ribs either depressed or shallow; marg
. Carnegie Institution of Washington publication. SELENICEREUS. 199 3. Selenicereus coniflorus (Weingart) Britton and Rose, Contr. U. S. Nat. Herb. 12: 430. 1909. Cereus coniflorus Weingart, Monatsschr. Kakteenk. 14: 118. 1904. Cereus nycticalus armatus Schumann, Gesamtb. Kakteen 147. 1897. Selenicereus pringlei Rose, Contr. U. S. Nat. Herb. 12: 431. 1909. Cereus jalapaens is Vaupel, Monatsschr. Kakteenk. 23: 26. 1913. vStems high-climbing, giving off numerous aerial roots, pale green, becoming purplish along the ribs, 5 or 6-ribbed; intervals between the ribs either depressed or shallow; margins of the ribs slightly wavy to strongly knobby; spines acicular, pale yellow, the radials 4 to 6, with i central, porrect, i to cm. long; bristles from the lower part of areoles, 2, reflexed; buds globular, covered with white hairs; flowers about 22 to 25 cm. long; outer perianth-segments linear, light orange or bronzed to lemon-yellow; inner perianth-segments pure white, apiculate; filaments greenish; style much shorter than the inner perianth-segments; stigma-lobes greenish yellow; scales on the ovary and flower-tube linear, reddish, their axils bearing white hairs and spines; fruit globose, about 6 cm. in diameter. Type locality: Not cited; based on cultivated plants. Distribution: Eastern Mexico, especially Vera Cruz. This is a vigorous climbing vine, flowering freely in cultivation. It is often known in collections as Cereus nycticalus armatus. Living material was collected by Dr. Rose in Mexico in 1905, where he learned it was being gathered in large quantities and shipped to the United States, as Cereus grandijlonis, to be manufactured into medicine. Illustration: Schumann, Gesamtb. Kakteen f. 35, as Cereus nycticalus. Plate xxxv is from a plant collected by Dr. Rose in Mexico in 1905, which flowered at the New York Botanical Garden, May 8, 1913. Figure 273 shows a joint and figure 274 a fruit of a plant in the collection of the United States Department of Agricult
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