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Nature
(1927)  Page(s) 62.  
 
[Article "Wild Rose" by C. H. Robinson]
Botany books tell us that the wild or native roses have but five heart-shaped petals and until the blooming season of 1924 I had no Occasion to challenge it....
Each flower had thirteen petals, round at the top and arranged in two rows, seven in the outer and six in the inner row, lapping like shingles on a Roof....
(1937)  Page(s) 150.  
 
Already the U.S. Patent Office has granted more than two hundred plant patents. A number of the patented plants are on the market. There is the "Gov. Alfred E. Smith Rose", invented by Marguerite Denoyel, of France. Plant patent No. 62 protects this rose. There is no brown derby on it.
(1926)  Page(s) 517, vol 117, no.2945.  
 
Evolution of Rosa
T. D. A. Cockerell
Thus the diploid R. rugosa, which I found to be a strictly sea-coast plant in Siberia, is a well-defined type specially adapted to its peculiar habitats but not extending even a few miles inland.
(1913)  Page(s) 571.  
 
In Letters to the Editor:
" Rosa stellata." In 1898 Prof. E. O. Wooton described a remarkable new rose from southern New Mexico, giving it the name Rosa stellata on account of the stellate trichomes. The peculiar, mostly trifoliolate leaves, the leaflets with cuneiform bases and more or less truncate, sharply toothed apices, gave the plant an unusual appearance; while even the flowers, described as " large and showy . . . deep rose-purple," were not at all like those of the ordinary wild roses of the Rocky Mountains. Through the kindness of my friend, Prof. Fabian Garcia, I obtained some living plants of R. stellata from the original locality in the Organ Mountains. Some of these were sent to Dr. A. R. Wallace, who has grown them in England successfully; the others have been growing in Boulder, Colorado. Last year the plants in my garden grew exceedingly well, and were most attractive. Certainly if R. stellata can be generally used in gardens, it will be a valuable addition to horticulture, but it probably will do its best only in relatively dry climates. My wife attempted crosses with several other roses, and in one case was successful in getting good seed; what will result remains to be seen.

The fruit of R. stellata, as indicated by Wooton, is large, beset with strong slender prickles. Quite unlike the usual types of rose fruits, its walls are dense, not at all fleshy or brilliantly coloured, but corky. The orifice is very broad, with a diameter of 8 mm. The bright chestnut-red seeds, about 4 mm. long, are long-oval, not compressed, and therefore not at all angular. All this differs conspicuously from the fruit of typical Rosa.

R. stellata, however, is not the only plant of this type. Years before, Engelmann described R. minutifolia from Lower California, a plant with the same general characters. In recent times, Dr. Greene has separated part of Wooton's R. stellata as R. mirifica, and has added a fourth species, R. vernonii. Thus we have a compact group, which should, I think, form a distinct subgenus or genus Hesperhodos, with stellata as the type. All the species are of extremely restricted distribution, which may probably be explained by the fact that the fruits are not adapted to be eaten by birds.

The wide-open prickly fruit suggests that this may be a primitive form, as compared with true Rosa; but it is to be noted that the roses found fossil in the Miocene beds of Florissant, Colorado, belong to the true genus Rosa, not at all to Hesperhodos. T. D. A. Cockkrell, Boulder, Colorado, December 30, 1912.
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