Read about Rathbunia in the Standard Cyclopedia of Horticulture
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Rathbunia (named for Richard Rathbun, Assistant Secretary in charge of U. S. National Museum). Cactaceae. Plants not large, the st. and branches often weak: spines stout, those of the flowering areoles not differing from the others: fls. diurnal, single, only from the upper areoles, very narrow and elongated, at first straight, but in age more or less curved, oblique at throat, scarlet, persistent; petals very short, spreading or reflexed; stamens attached near the middle of the tube, exserted: fr. spiny, globular, red, breaking open irregularly; pulp red; seeds black, compressed, minutely pitted,with a large basal oblique hilum.—Three species have been described. Native of the west coast of Mex. The species all have rather weak sts., often clambering and resembling somewhat Cereus serpentinus, but usually stouter and with different spines and fls. The fls. are very narrow and scarlet, and more enduring. R.sonorensis, Brit. & Rose, and R. Kerberi, Brit. & Rose, are sometimes, confused with the above, and may be handled under this in the trade. J. N. Rose.
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References
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
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