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ISI 2005-1. Aporocactus martianus (Zucc.) Br. & R.
The rat-tail cactus, Aporocactusflagelliformis, is widely grown
and frequently illustrated in beginner’s cactus guides. A.martianus is
its uncommon cousin with similar though slightly more robust stems. Both species
are included by Barthlott in the genus Disocactus but differ from all
others of that genus in their slender, cylindrical, spiny stems. In common to
most, however, are the showy, diurnal flowers attractive to hummingbirds. While
the flowers of A. flagelliformis are mostly or wholly magenta and strongly
zygomorphic, those of A. martianus are red and barely zygomorphic. Both
aporocacti are also considerably easier to grow than the generally more finicky,
tropical disocacti. Rooted cuts of HBG 72066, collected 20 Jan 1992, by M Kimnach
(3220), M Cházaro, R Dorsch & M Negrete, at 7500’ elev. in oak-pine
woodland, 17 km along the road from the Pan American Highway to Benito Juarez,
Oaxaca, Mexico. $5. |
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