IP? 



season. Seedlings which apparently 

 .produce good, typical commercial flow- 

 ers during the early part of the season, 

 or until the middle of January, began 

 to develop many blooms which to all 

 appearance were of the bullhead type. 

 Our attention has also been called to an 

 apparently opposite case, in which a 

 seedling plant, producing bullheads in 

 the early part of the season, began to 

 develop flowers bordering on the com- 

 mercial type. 



Our present knowledge would lead us 

 to believe that there is a considerable 

 degree of seasonal fluctuating variabil- 

 ity in some of the seedling plants. This 

 variability has also been noticed in the 

 Enchantress and Mrs. Ward, and no 

 doubt is more or less common in other 

 fuU-petaled varieties. 



Advantages of Single-Double Cross. 



Thus far in our discussion we have 

 simply aimed to present a report of 

 the results which have actually been 

 secured from the various crosses men- 

 tioned. Our present effort will be to 

 show that the single -double cross may 

 offer some advantages to the plant 

 breeder which are not found in the 

 commercial-commercial crosses. In the 

 first place, it has been shown that the 

 resulting seedlings of the commercial 

 crossed with the commercial yield ap- 

 proximately twenty-flve per cent sin- 

 gles, fifty per cent commercials and 

 twenty -five per cent doubles. In other 

 words, the possibility ^of securing a 

 really desirable seedling is limited to 

 fifty per cent of the progeny. In the 

 single-double cross the breeder has 100 

 per cent from which to make his selec- 

 tion. The advantage, therefore, of the 

 two crosses is as fifty to 100 in favor 

 of the single-double combination. In 

 addition to this, we might mention, it 

 frequently happens that quite desirable 

 colors occur in the singles, particularly 

 in scarlets and crimsons. The singles 

 are also, as a rule, free blooming, and 

 many of them produce flowers with 

 long, stiff stems. They are also, as a 

 rule, more vigorous than the commer- 

 cial types. Similar desirable charac- 

 ters are often found embodied in the 

 bullheads, and with intelligent selec- 

 tion of the parent plants it should be 

 possible to secure a reasonably large 

 percentage of promising seedlings. 



There is another factor which we 

 have not as yet mentioned, but which 

 seems to be clearly emphasized by our 

 investigations, and that is with respect 

 to the average number of seedling 

 plants produced per cross. Our data 

 show that the single-single combination 

 produced 16.1 per cent plants per cross; 

 the single-double, 22.8; the commercial- 

 single, 6.8, and the commercial-commer- 

 cial, 11.3. While it is recognized that 

 a repetition of similar crosses might 

 not corroborate these figures in whole, 

 it is believed that the general results 

 are indicative of greater vigor in the 

 progeny of the single-double combina- 

 tion. Certainly, when these data are 

 considered in connection with the fact 

 that the single-double cross gives, theo- 

 retically at least, 100 instead of fifty 

 plants from which to select, one is im- 

 pressed with the greater desirability of 

 employing such a cross when attempt- 

 ing to produce or create new varieties. 

 We are well aware that such sugges- 

 tions are directly at variance with pres- 

 ent recognized practice, but neverthe- 

 less it is believed that the plant breeder 

 can well afford to give it some con- 

 sideration. 



The Florists^ Review 



March 20, 1913. 



ROSES ROSES ROSES 



Let U8 know your wants— We can now quote you very low prices. We always have the stock 

 when the other fellow has none, as we grow more than all the others put together. 



VIOLCTS.— Very large bunches, 76c per dozen. Special price on large quantities. 



One million Princess of Wales violet plants, well rooted and free from disease, 120.00 per 1000. 



Everything in cut flowers. 



Expert packing. Long distance shipments our specialty. 



E. W. McLELLAN CO., Inc. 



18-20 LICK PLACE SAN FRANCISCO. CAL. 



Largest growers and shippers of cut flowers west of Chicago. Nurseries at Burlingame, Cal. 



Mention The Review when you write. 



WANTED 



500— FLORISTS— 500 



to place a standinc: order with us at once for 



CALIFORNIA VIOLETS 



We not only have our own beds, but we have arranged to handle the Violets 

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 and shippers of Uiese wonderful shipping flowers. Two hundred acres of Violets. 



DARBEE'S 



Shlpplns Station 

 10S6 Hyd. Stro.t 



SAN FRANCISCO, CAL. 



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BULBS 



FOR NEXT FALL 



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IMPORTERS 

 355 Twelfth Street, OAKLAND, CAL. 



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WE ARE CALIFORNIA VIOLET GROWERS 



We have the largest Violet beds in California. The fact is we can ship you California 



VIolota cheaper and guarantee our shipmeirts. Our QIant Violets are unexcelled, 



while our Princos* off Waloa are the finest and largest that can be produced. Let 



us take care of your consignments. Samples on request. 



S. ROSAIA COMPANY, 43 SicrucBto St, San Fnndsco, Cal. 



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WE ARE BOOKING advance orders. 1913 fall delivery, of 



JAPANESE LILY BULBS, PLANTS AND SEEDS 



Write to-day for special trade list. 

 THF nRITNTAI CITn m Growers and Dealers 



llUi UIUU^IHLi OLLV VW., 280 Clement St., SAN FRANCISCO, CAL. 



Nurserymen and Seed Orowers, 38 Kamlne, Kita-adacbl, Saltama, Japan. 



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SHASTA DAISIES 



Burbank's Improved Alaska, California and 

 Westralia. Extra strong divisions, $2.50 per 100, 

 $24.00 per 1000; strong divisions. $2.00 per 100, 

 $19.00 per 1000. Also many other plants. Send 

 for list to 



FRED GROHE, l^il^^>^ 



and 



R.D. No.4. 



SANTA ROSA. CAL. 



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Ferns in 21 and 22-in. Pots 



best varieties for fern dishes, $4.50 per 100. Bos- 

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