132 
gives a list of plants whose thorns have basal cork formation. This 
list is taken in part from Gamble’s manual of Indian timbers and, 
in part, from specimens found in museums and botanical gardens. 
Bids oe 
Crossing of Cucurbits, L. H. Pammel (Bull. 19, lowa Exp. Station). 
Prof. Pammel records the results of a large number of tests in 
crossing pumpkin (Cucurbita Pepo), squash (C. maxima), water- 
melon (Citrellus vulgaris), musk melons (Cucumis Melo), and cu- 
cumbers (Cucumis sativus). While there was great variability in 
some species as in the pumpkins and squashes, this was due to the 
seed used and not an immediate effect of crossing. The result of 
the cross is seen only in the offspring, not in the fruit. 
B.D. 31 
Cypripedium fasciculatum, var. pusillum. (Bot. Mag. t. 7275). 
Dr. Hooker refers C. pusillum Rolfe, Kew. Bull., 1892, 211, to 
this species. 
Distribution of Tropical Ferns in Peninsular Florida. Lucien M. 
Underwood. (Proc. Ind. Acad. Sci. 1891, 83-89). 
Ecloge Botanica, No. z. Edward L. Greene. (Proc. Acad. Nat. 
Sci. Phila. 1892, 357-365 ; issued Feb. 6, 1893). 
This contribution of Prof. Greene is devoted to (1) New or 
Noteworthy Thistles, in which the conclusion is expressed that all 
our species should be included in the Linnzan genus Carduus, the 
name Cyicus being applicable only to Centaurea benedicta. Most 
of the Eastern species have already been named under Carduus ; 
the others are here transferred and ten new ones characterized, 
which will much facilitate the naming of undetermined material ; 
(2) Three new Perennial Lupines: Lupinus floribundus from Colo- 
rado, L. gracilentus and L. Covillei from California. Nid Bs 
Economic Fungi—Fascicle V. Profs. Seymour and Earle. This 
contribution, embracing numbers 201 to 250, includes thirteen 
families of plants among the hosts, two of which, the Rosacea and 
Conifere are largely represented, the former containing the 
eecidial and the latter teleutosporic forms of several species of 
Gymnosporangium. The mycologist will be particularly interested 
in the specimens of G. Bermudianum (Farl.) Earle, which strangely , 
has both the zcidial and teleutospore form upon the same galls 
