307 
a speciebus omnibus adhuc descriptis spicis solitariis di 
Hlerba annua, glabra, gracilis, usque ad 11 em. alta. Culmi 
plures, teretes, laeves, inferne foliati, superne nudi. Folia linearia, 
1470. Lipocarpha monocephala, Turrill [Cyperaceae-Scirpoideae]; 
ffert. 
acuta, 1-2 cm. longa, 0°5 mm. lata. Spicae solitariae, laterales, 
4-6 mm. infra apicem positae, breviter conoideo-cylindric , 
longae, 1°5 mm. di mae late triangulares, apice minute 
hyalinae. Stamen 1, anticum; filamentum 0°75 mm. longum ; 
anthera conspicue apiculata, cum apiculo ei vix aequilongo fere 
0°5 mm. longa. Nusz obovoidea, 0°75 mm. longa, fere 0°5 mm. 
TroricaL Arrica. §S. Rhodesia; Victoria Falls in the Rain 
Forest, F. A. Rogers 6024. 
XLIX.—A DISEASE OF NARCISSUS BULBS. 
(With Plate.) 
G. MASSEE. 
About three years ago a disease of an unusual nature was met 
with on various kinds of Narcissus bulbs. During the present 
season the disease has increased to such a serious extent, that 
according to the statement of growers on a large scale, entire plots 
of bulbs have been completely destroyed. The injury is due to the 
presence of a parasitic fungus called Fusarium bulbigenum, Cooke 
& Mass., first described in 1887, the host bemg given as a 
Narcissus bulb. At that time it was not recognised as a parasite. 
