490 SECTIONAL TRANSACTIONS.—K. 
1.—Pure Reds. 
Name. Colour of Flower. pH ae Flower. 
1. Anemone ‘ St. Brigid ’ .  searlet. 
2. Cineraria, Feltham Beauty strain (Sutton) .  brick-red. 3 2? 
Grandiflora (Storrie) . : .  brick-red. 6-2? 
3. Hibiscus sp. < : ; 3 .  searlet. 3 
4. Nicotiana x Sanderae. : $ ; . very dark red. — 
5. Primula beesiana x bulleyana . bright pink. about 4 
6. Primula japonica, red form ig Briscoei) . salmon pink. 3 
7. Tulip ‘Cramoisie Brilliant’ : , . scarlet. — 
2.—Magentas (intermediates). 
8. Anemone ‘St. Brigid’ . ; : ; -  -puce. 4-5 
9. Cineraria, Feltham Beauty . : : . deep magenta. 6-4 
10. Petunia, hybrid . : : 5 : . rose pink. 5-0 
ll. Primula burmanica . ; 5 : . pale lilac. 4-5 
12. P. Japonica (type) F : j ; . magenta. 3-5 
13...P. pulverulenta : ; ; - : - magenta. 3-1 
14. P. sinensis, ‘Etna’. : ; . deep red. 3-1 
15. P. sinensis, ‘ Reading Ruby’ : 3 . deep magenta. 3-4 
16. P. Sinensis, ‘Blue Star’. ; ; . violet blue. 5-2 
17. Tulip : : : : : : -  Wwine-purple. — 
3.—Blues. 
18. Anemone ‘St. Brigid’ . : ; ; . purple. 4-5 
19. Cineraria, Feltham Beauty . 4 . . royal blue. — 
20. ps ‘Wonder Queen’ , 4 . pure blue. 7:4 
21. Delphinium tatsienense 3 : : . pure blue. 7:3 
22. Ipomea Leerit . : : . . pure blue. 78 
23. Petunia x ‘Poor’s Blue’ . : ; . royal blue. 5-0 
25. Viola cornuta . cs 2 : - . violet. 4:5 
26. V. odorata . - : : : : . violet. 4-4 
The genetic relations of some of these forms is suggestive. The brick-red Cineraria 
has arisen in commerce from a pink strain ; the pinks supplied to the writer by Messrs. 
Storrie & Storrie as the parent strain have all proved to be magenta-pinks on testing. 
This raises the question of the origin of the other type of pigment. A comparison 
between the two forms of Primula japonica— type’ and ‘red form, near Briscoei,’ 
shows that their pigments would place these in distinct groups; the systematic 
importance of this will have to be considered. ‘Phe hybrid Primula bulleyana OK 
beesiana is interesting. The bulleyana parent has an orange flower, showing a ‘red’ 
anthocyanin on the tube of the corolla and the backs of the petals: there is yellow 
plastid pigment and flavone throughout. The beesiana parent is a magenta. The 
hybrid has a bright pink flower with a yellow eye, the anthocyanin (which is here 
distributed over the whole flower) is ‘red,’ and plastid pigment and flavone are 
present. The ‘St. Brigid’ strain of Anemone shows all three types of pigment: 
their genetic behaviour should be interesting. 
REFERENOES, 
1. Buxton, B. H.,and Darbishire, F. V. (1929).—‘ Behaviour of ‘‘ Anthocyanins.”’ 
at varying Hydrogen-ion concentrations.’ Jowrn. of Genetics, xxi. 
2. Smith, E. Philip (1930).—‘ Flower Colours as Natural Indicators.’ Trans. 
Edin. Bot. Soc., xxxii. 
AFTERNOON. 
(Section meeting as a whole.) 
Two semi-popular Lectures with Cinematograph Illustrations :— 
(a) Dr. R. N. Curystat.—The Wood Wasp—Sivrez. 
(b) Dr. F. M. L. Suerrrerp.—Cytological Aspects of Virus Diseases in 
Plants. 
