ABSTEACTS. 



289 



Oklahoma, Bull. 52 ; December 1901). — A descriptive list of Cabbages, 

 with yield for 1900 and 1901.— C. H. C. 



Calathea crocata. By Sir J. D. Hooker (Bot. Mag. tab. 7820).— 

 Nat. ord. Scitaminece, tribe Marantece. Native of Brazil. It flowered at 

 Kew in 1901. The whole plant is 10 inches in height. The lanceolate 

 leaves are green above, purple below ; the petiole of the uppermost 

 leaf being bright orange, as also are the bracts of the inflorescence. 



G. H. 



Calorhabdos cauloptera. By Sir J. D. Hooker (Bot. Mag. tab. 

 7800). Nat. ord. Scrophularinece, tribe Digitalece. — Native of China. 

 It flowered at Kew in 1900. It is remarkable for its four- winged stem. 

 It is a slender erect herb, with terminal spiciform raceme, 6 to 8 inches 

 in length. The flowers are dark red-purple, having two stamens only. 



G. H. 



Camassia. By S. Arnott (Journ. Hort. p. 119 ; Feb. 6, 1902).— A 

 plea is made for the more frequent cultivation of these in mixed borders, 

 as they require no special treatment and flower in May when border 

 flowers are scarce. — C. W. D. 



Campanulaceae of Portugal. By A. X. P. Coutinho (Bol. Soc. 



Broter. xviii. p. 22, 1901). — A critical list of the Portuguese species of 

 Campanulacea, numbering thirteen species, is given. This small number, 

 as compared with that of sixty species indigenous to Spain, is said to be 

 owing to the absence of elevated tracts of land in Portugal. Spccularia 

 castellana and Jasione blepharodon are among the rarest species, and the 

 latter is considered as being probably only a form of J", montana or 

 J. corymbosa. — G. M. 



Campanula mirabilis. By M. Micheti (Bev. Hort. Beige, xxviii. 

 No. 1, p. 9). — With two figures showing the rosette of leaves in a crevice 

 of a rock and the plant when flowering, after which it dies. — G. H. 



Campanulas, Dwarf. By H. E. Molyneux (Garden, No. 1584, 

 p. 207 ; 29/3/1902 ; No. 1585, p. 225, 5/4/1902).— Amongst these are to 

 be found species that grow as easily as weeds, even in foggy London ; 

 others there are that almost refuse to grow. These notes describe the 

 experience of an amateur with the dwarf Campanulas in a London garden 

 and the method he has found most suitable. The article is illustrated 

 from photographs taken in the writer's garden. — E. T. C. 



Canker and Gummosis in Fruit Trees. By F. P. Brzezinski 



(Comp. Bend. May 20, 1902). — The author's researches on " Canker," 

 extending over seven years, go to prove that the fungus called Nectria 

 ditissima, previously considered as the cause of this disease, is simply a 

 saprophyte whose mycelium is incapable of attacking living tissue, and 

 when present on cankered spots, which is by no means always the case, 

 grows on the dead portions of tissue previously destroyed by other agents. 

 In addition to the perithecia and conidia of this fungus, pycnidia and 

 yeast forms, hitherto unknown, are recorded. 



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