. Carnegie Institution of Washington publication. FIG. 102.—Opuntia lagopus, grow 58. Opuntia australis Weber, Diet. Hort. Bois 896. 1898. Pterocactits valenlinii Spcgazzini, Anal. Soc. Cient. Argentina 48: 51. 1899. Plants often with large roots, these 5 to 8 cm. long by 2 to 3 cm. in diameter and larger than the parts above ground; joints described as cucumber-shaped, usually 6 to 8 cm. long by i to 2 cm. in diameter, but apparently often much smaller, tuberculate; radial spines 10 to 15, spreading, white, short, 3 to 4 cm. long; central spines i or 2, much longer than the radials, 2 cm. lon
. Carnegie Institution of Washington publication. FIG. 102.—Opuntia lagopus, grow 58. Opuntia australis Weber, Diet. Hort. Bois 896. 1898. Pterocactits valenlinii Spcgazzini, Anal. Soc. Cient. Argentina 48: 51. 1899. Plants often with large roots, these 5 to 8 cm. long by 2 to 3 cm. in diameter and larger than the parts above ground; joints described as cucumber-shaped, usually 6 to 8 cm. long by i to 2 cm. in diameter, but apparently often much smaller, tuberculate; radial spines 10 to 15, spreading, white, short, 3 to 4 cm. long; central spines i or 2, much longer than the radials, 2 cm. long, erect, flattened, and somewhat papery; flowers yellow, 2 to 3 cm. broad; seeds said to be rugose. Type locality: Between Santa Cruz River and the Strait of Magellan, Argentina. Distribution: The southernmost parts of Argentina. We have recently examined three col- lections of this plant made by Carl Skotts- berg in the Territory of Santa Cruz, which in the main agree with Weber's description. We have also seen Ptcrocactus valcntiiiii, which is the same as Skottsberg's plant. Dr. Spegazzini records this species as being in Santa Cruz, Argentina; but as he regards the plant collected there by him as only a variety of O. damnnii, we are inclined to believe he must have collected something else. This species, which is found at the Strait of Magellan, extends farther south than any other cactus known to FIG. 103.—Opuntia australis. Showing large roots, joints, and flower. Natural 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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