. The Cactaceae : descriptions and illustrations of plants of the cactus family. . KiG. 182.—Fruit, spine-cluster, and seed of N. nelsonii. -Seed and spine-cluster of N. longifiora. Collected at Santiago Papasquiaro, Durango, by Dr. Edward Palmer in 1897 (No. 89). We have repeatedly studied this curious plant during the last 25 years, but have never been able to identify it or reach a definite conclusion as to its relationship. Our material consists of a single plant split down one side, bearing several withered flowers, and two detached flowers. Recently, we were sent a photograph of a cactus
. The Cactaceae : descriptions and illustrations of plants of the cactus family. . KiG. 182.—Fruit, spine-cluster, and seed of N. nelsonii. -Seed and spine-cluster of N. longifiora. Collected at Santiago Papasquiaro, Durango, by Dr. Edward Palmer in 1897 (No. 89). We have repeatedly studied this curious plant during the last 25 years, but have never been able to identify it or reach a definite conclusion as to its relationship. Our material consists of a single plant split down one side, bearing several withered flowers, and two detached flowers. Recently, we were sent a photograph of a cactus from Mexico, labeled Mammillaria n. Sierra de Cacaria S. de Ulama, which seemed to be Dr. Palmer's plant and led us to make a detailed study of it. One of the peculiarities was the absence of an exserted ovary, so conspicuous in all the Neomammillaria. The cut stem showed an exposed sunken ovary, and by mere chance an old fruit with ripe seeds, probably several years old, was found in the axils of one of the oldest tubercles. As described above, the seeds are very unlike those of any species of 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 Britton, Nathaniel Lord, 1859-1934; Rose, J. N. (Joseph Nelson), 1862-1928. Washington : Carnegie Institution of Washington
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Keywords: ., bookauthorbrittonnathaniellord1, bookcentury1900, bookdecade1910
