. Carnegie Institution of Washington publication. MONVILLEA. Plate in, figure 3, shows a flowering branch in the collection of the New York Botanical Garden; figure 4 shows the fruit from a plant in the same collection. Figure 20 is from a photograph taken in 1917 by Dr. Shafer at Catilegua, Argentina. 2. Monvillea insularis (Hemsley). Cercus insularis Hemsley, Voyage of Challenger Bot. I-: 16. 1884. Creeping or clambering, forming a dense thicket, much branched; branches nearly cylindric, to 3 cm. in diameter, 6-angled; spines 12 to 15, unequal, spreading, terete, yellow; flowers de- scri
. Carnegie Institution of Washington publication. MONVILLEA. Plate in, figure 3, shows a flowering branch in the collection of the New York Botanical Garden; figure 4 shows the fruit from a plant in the same collection. Figure 20 is from a photograph taken in 1917 by Dr. Shafer at Catilegua, Argentina. 2. Monvillea insularis (Hemsley). Cercus insularis Hemsley, Voyage of Challenger Bot. I-: 16. 1884. Creeping or clambering, forming a dense thicket, much branched; branches nearly cylindric, to 3 cm. in diameter, 6-angled; spines 12 to 15, unequal, spreading, terete, yellow; flowers de- scribed as yellow, cm. long; ovary and flower-tube bearing only a few minute scales, but no spines or hairs; flower-tube very slender; perianth-segments in several series; filaments and style protruding; stigma-lobes 13, radiating. Type locality: St. Michael's Mount, off Brazil, 5° S. latitude. Distribution: Known only from the type locality. This plant is noteworthy as inhabiting an island on which no other cactus exists. It is the most eastern in natural distribution of all cactus species. So far as we are informed, it has never been in cultivation. Illustration: Voyage of Challenger Bot. i": pi. 14, as Cereus insularis. Figure 21 is copied from the plate above cited. 3. Monvillea spegazzinii (Weber). Cereus spegazzinii Weber, Monatsschr. Kakteenk. 9: 102. 1899. Cereus itnisilsii Schumann, Monutsschr. Kakteenk. 9: 185. 1899. Erect, strongly 3-angled or ribbed, bluish green, more or less spotted with white; ribs strongly undulate or serrate; spines on young branches brown to black, 3 at an areole, 5 mm. long, with broad conic bases; on old wood 6 at an areole, of these 5 radial, i central; bud and flower rigid and erect, but after anthesis abruptly reflexed; flowers 11 to 12 cm. long, narrow, funnelform; outer perianth-segments pur- plish, the inner nearly white, serrate above, acuminate. Type locality: Near Resistencia, Chaco Territory, Argentina. Distribution: Paragua
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902
