HUMULUS AMERICANUS 135 
cere associated with Ruta graveolens.” It is much to be desired 
d 
with that of the indigenous American species H. americanus. 
For this purpose the writers will be glad to receive portions of 
ida plants. That great care will be necessary in most European 
untries to ensure that the plant is the wild H. Lupulus, and not 
sti “ esca ul 
In 1913 we received from Prof. P. A. Saccardo portions of plants 
and also seeds, localised and annotated as follows: ‘“ Vittorio 
This year, however, we learn from Dr. M. Corvi, of the R. Istituto 
Superiore Agrario of Perugia, fer in 1860-70 the hop was culti- 
vated near Bologna “ with good pees and that now experiments 
with its culture are being carried on in Umbria. 
Tt is clear, from what has been as above, that for similar 
e bee 
Journ. §.-E. Agric. Coll. vol. “OL p. 408 roy to cross H. ameri- 
canus with H. Lupulus; most of t hybri ids so obtained are 
completely fertile and produce n aa “ “hops ” (strobiles) ; some of 
the hybrids, however, have produced “monstrous” inflorescences. 
THREE NEW PERYMENIUMS. ~~) 
By §. F. Buaxe, A.M. 
Perymenium lineare. Frutex vel ee ee ramosus. 
b tr 
Caulis tenuis purpurascens scaberrim rigilloso-verrucosus 
striatus vel subquadrangularis. Folia opposita linearia vel 
patenti- nites glanduloso-adspersa venoso-reticulata 6-7-7 cm 
longa 2:3-4-5 mm. lata. a immarginati tuberculati 2-5 mm. 
longi. Capitula ad 2°8 cm. lata cymoso-paniculata (8-33) 
apicibus ramorum in ‘peduneis dense tuberculato-strigillosis ; 
dice raseeses herbace: ae btu ing vel rotundato- 
depressa praedite. Radii 15 a avi anguste oblongi fertiles 
12 i ubglabrze 
ppi caducee 
sursum spinulosz hg ce < uabus du dap longio ribus ex- 
