NOTES AND ABSTEACTS. 



531 



The flower buds are attacked, the eggs being deposited in the bud by 

 the fly. The bud usually falls whilst quite young. 



This insect has caused serious loss to cotton-growers in Antigua. 

 It is directly influenced by the weather — damp weather being particularly 

 favourable. No suitable remedies have been discovered thus far. 



M.C.C. 



Cucurbitaceae, Fruits and Seeds of (Bot. Gaz. vol. xlvii., No. 4, 



pp. 263-310, April 1909 ; with 53 figs.).— Miss Kate G. Barber gives a short 

 sketch of the distribution of Cucurbitaceae and describes, with figures, the 

 anatomy of the fruits and seeds of various species of Cucurbita, Cucumis, 

 Citrullus, Sicyos, Echinocystis,Luffa, Abobra, Melothria and Trichosanthes. 

 The figures are well worth close examination on account of the interesting 

 variety of the cell shapes, especially in the epidermal, subepidermal and 

 sclerenchymatous layers. The descriptions are very complete and clear. 



a. F. S.-E. 



Cyeads, Spermatogenesis of {Bot. Gaz. vol. xlvii., No. 3. pp. 215- 

 236, March 1909 ; with 3 figs, and 4 plates). — The stamens of Dioon edible 

 (according to Professor Charles J. Chamberlain) are rather large and bear 

 about 250 sporangia with about 30,000 spores in each. There are twelve 

 chromosomes in the pollen mother cell. There is only one prothaliial 

 cell. Blepharoplasts are of nuclear origin. Sperms are discharged from 

 sperm mother cells. The nucleus and cytoplasm show a vigorous 

 amoeboid movement. 



There is also the usual movement by cilia. — G. F. S.-E. 



Cyenoches densiflorum. By E. A. Eolfe (Bot. Mag. tab. 8268). 

 — Nat. ord. Orchidaceae ; tribe Vancleae. Colombia. Leaves oblong- 

 lanceolate, 5-7 inches long ; flowers monoecious ; male racemes pendulous, 

 many and dense-flowered, greenish-yellow, spotted with purple ; female 

 racemes 2-flowered ; flowers almost fleshy, 3 inches across, green except 

 pale yellow lip. — G. H. 



Cyclamen, Sweet-Scented. By J. T. Stang (Garden, April 10, 



1909, p. 179). — The writer quotes from a magazine reference in the year 

 1849 to sweet-scented cyclamen, and describes attempts to recover the lost 

 fragrance. He accidentally picked up a sweet-scented plant at a village 

 inn, and has had success with white varieties having a pink or rose base, 

 with a giant white and a bright claret, but not with salmon or dark 

 coloured flowers. — H. B. D. 



Dahlia, Summer-flowering-. By B. T. Galloway (U.S.A. Dept. 

 Ayr. Year Book, 1907, p. 114 ; 1 plate). — An account of the production of 

 a summer-flowering Dahlia. The seed-bearing parent was discovered in 

 Mexico in 1904 at an elevation of 7,000 ft. This crossed with ordinary 

 forms gave some twenty new varieties, which commence to flower in early 

 July. Only three colours — crimson, scarlet, and yellow in various shades- 

 have yet appeared. Seed is freely set upon the hybrid plants, and the 

 name ' Cosmos Dahlia ' is suggested. — E. A. Bd. 



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