636 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Clerodendron cephalanthum. By W. B. Hemsley (Bot. Mag. 

 tab. 7922).— Nat. ord. Verbenacece. Native of Zanzibar Island. A hand- 

 some shrub, climbing by means of modified petioles, the lower part of 

 which thickens, the upper part disarticulating, leaving it as a recurved 

 hook. The flowers are densely cymose-capitate. Calyx red ; corolla 

 white, with a tube 3i inches long. Stamens crimson, long exserted. 



G. H. 



Clerodendpon mypmeeophilum. Anon. (Gard. Chron. No. 854, 

 p. 291, fig. 118 ; May 9, 1903). — This new Clerodendron from Singapore 

 has recently been flowered at Kew. A description of the plant was given 

 in the 1 Gardeners' Chronicle ' on March 28 last. The flowers are of a 

 bright orange colour. The plant is a highly ornamental one and a great 

 acquisition.- — G. S. S. 



Club-root. By Geo. Massee {Gard. Chron. No. 882, p. 351 ; Nov. 

 21, 1903). — The author wishes to make clear his views on this subject, 

 which have not hitherto been grasped, and says : " The principal point 

 to remember is that Cruciferous plants can only be attacked by the 

 organism causing 1 club-root ' during the seedling stage. When a plant 

 is six weeks old it may for all practical purposes be considered immune 

 against the attacks of club-root, even if planted in soil containing the 

 germs of the disease. If Cabbage plants are grown in seed-beds abso- 

 lutely free from disease, they will remain healthy as far as club-root is 

 concerned." -G. S. S. 



Ccenomyces consuens : a new Fungus. By C. v. Deckenbach 

 (Flora, vol. xcii., 1903, pp. 253-281, t..vi.-vii.). — This mould is a parasite 

 in the gelatinous sheath of Calothrix parasitica, a blue-green Alga, itself 

 parasitic on Red Seaweeds (Nemalion). It has a varicose, septate mycelium 

 whose extramatrical branches bear pyriform zoosporangia (15-23 /t wide), 

 coloured orange with minute oil-drops and containing numerous nuclei, 

 and ultimately discharging through a very long (120-150 fj !) tubular 

 process or ' neck ' the 1-flagellate zoospores, which swim with the 

 flagellum posterior, like a Metazoon sperm. This plant is most closely 

 allied to the (doubtful) Chytridian Aphanistis Sorokine, which has 

 similar mycelium and zoospores. An interesting discussion on the 

 interrelations of the Fungi follows. The author subdivides them into 

 three equivalent groups : (1) Phyomycetes ; (2) Ccenomycetes (these two 

 genera) ; (3) Eumycetes (Ascomycetes, Basidiomycetes). — M. H. 



Colletia cruciata (Gard. p. 371 ; 30/5/03).— This interesting 

 Chilian shrub is not generally met with, but is hardier than its habitat 

 would suggest, being rarely if ever injured by frost in the South-west of 

 England. Jt is sometimes stated that the flowers do not add much to 

 its oHect, and as a rule it may be allowed that the small white urn-shaped 

 flowers, which arc wax-like in texture and very lasting, do not render the 

 shrill) a conspicuous object, since they are rarely borne in quantity; but in 

 instances like the specimen illustrated the case is different, the effect being 

 distinctly beautiful and striking. — E. T. C. 



