222 
elliptical, with truncate base and papillate apex ; 35-50 by 20-24 y. Germination by 
zoospores, usually fifteen in number, or rarely by a simple liypha of germination. 
Oospores unknown. On pods and stems of the lima bean (Phaseolus lunaius), New 
Haven, Conn., September and October. —David G. Fairchild. 
Thumen, Felix yon. Die Pike des Aprikosenbaumes (Armeniaca vulga¬ 
ris, Lara.). Pine Monograpliie. Klosterneuburg bei Wien. Yerlagder 
k. k. Yersuchs-Station. October, 1888. Small quarto. Paper, pp.19. 
The importance of the apricot industry in some parts of the United 
States, particularly in California, where there are very extensive or¬ 
chards, makes this paper of considerable interest to fruit growers. 
According to Professor von Thumen the apricot possesses no great 
longevity, but yields good fruit abundantly and can be grown satisfac¬ 
torily even upon an inferior sandy soil. Early bearing partly compen¬ 
sates for its brief existence, and but for the number of diseases to which 
it is subject it would be much more generally cultivated. The author 
describes twenty-seven fungi which have been found on this tree either 
as parasites or saprophytes as follows, the former in Italics the latter in 
Eoman type. 
On the fruit.— Phyllosticta vindobonensis , Thiim. ; Plioma Armenia - 
cce, Thiim.; Monilia fructigena, Pers.; Monilia laxa , Sacc. & Yogi.; Glce- 
osporium Iceticolor , Berk.; Epochnium virescens , Mart.; Sporotrichum 
lyococcon, Elirenbg.; Melanomma Minervte, H. Fab. 
On the leaves. — Puccinia prunorum Lk.; Podosphcera tridaetyla , 
DBy.; Capnodium armeniacce , Thiim.; Phyllosticta circumcissa , Cooke.; 
Clasterosporium amyg dale arum, Sacc.; Cladosporium herbarum, Lk. 
On the branches and twigs. —Yalsa ambiens, Fr.; Yalsa cincta, 
Fr.; Yalsa leucostoma, Fr.; Eutypella prunastri, Sacc.; Cenangium 
prunastri, Fr.; Diplodia pruni, Fuck.; Diplodia amygdali, Cooke & 
Hark.; Cytispora leucostoma, Sacc. (gonidia of Yalsa.); Cytispora cincta, 
Sacc. (gonidia of Yalsa.); Cytispora rubescens, Fr.; Coryneum Beijer- 
inckii , Ouds.; Melanconium fusiforme, Sacc.; Hymenula armeniacre, 
Schulz & Sacc. 
Some of the so-called saprophytic forms may be parasitic. Most of 
the species occur on other plants. Those peculiar to the apricot are 
Phyllosticta vindobonensis , P. circumcissa, Plioma armeniacce , Epochnium 
virescens, Capnodium armeniacce, Melanconium fusiforme, and Hymenula 
armeniacce. It will also be observed that many of these fungi, espe¬ 
cially the parasites, are imperfect forms, whose life history remains to 
be worked out. 
The brief Latin description which introduces each species is fol¬ 
lowed by paragraphs on the characteristics of the disease, its dis¬ 
tribution, and other matters of interest, including treatment for the 
parasites in the few cases where any has been discovered. From these 
notes it appears that the European Podosphcera tridaetyla also affects 
damsons, prunes, and plums, especially the first, but has not been 
found upon the cherry, although in this country it is common upon the 
latter. Monilia laxa is generally confounded with M. fructigena. It 
