272 
early in the shade. ‘Take them up while hot, even if not to be imme- 
diately used, as much heat will still be found in a pile of driers at 
evening changes. 
During cloudy weather, it may be necessary to dry both packets 
and driers in the house. If no better way present itself, the latter 
will have to be spread about the room. Some botanists make a hole 
in each end of drier or packet and string them on a stout wire or 
rod, suspended on hooks set in the wall or a shelf. The writer has 
arranged a kind of rack for the driers, which he. places near the fire. 
I shall close this paper with a recapitulation of a few of the more 
important hints on good drying. 
Select the most bibulous paper for driers. 
Use specimen sheets to enclose plants in drying. 
Do not make the piles too large. 
The first change of driers should be made within several hours 
after putting into press ; 
Then remove all folds and arrange specimen naturally. 
Change driers twice a day for a day or two. 
Use heated driers when possible. 
§ 271. Two remarkable forms of Trillium.—Mr. Darius R. 
Shoop has sent us from St. Louis, Michigan, two remarkable forms, 
as I take them to be, of Zrillium grandiflorum. Both show certain 
marks of abnormality i in the stripe of green down the centre of the 
_ petals, although in one of them it is slight. One of these specimens 
is a slender 7. grandiflorum with leaves petioled in the manner of 
T. nivale. Mr. Shoop took it for a large form of the latter species, 
and the leaves are quite as much petioled; but they have the cune- 
ate base and the conspicuously acuminate apex of Z. grandiflorum ; 
and the flower is just like that of this species with partly poral 
petals, such as are occasionally met with. 
The other specimen, which Mr. Shoop would like to have named 
T. aphyllum, is most remarkable. The stem, as we take it to be, 
though the base is not given, is six inches long, and bears a fine 
large flower and nothing else. ‘The sepals are rather more foliaceous 
than is usual, and are fully two inches long, quite equalling the petals. 
There is no doubt of its being a sport. But both these freaks 
should be watched, and all the forms found growing with them like- 
wise gathered. A. GRAY. 
§ 272. North-eastern Plants.—Mr. C. G. Pringle, Charlotte, 
Vermont, sends his list of “ Alpine and rarer Northern Plants ”’ with 
several additions, and the following note. These plants he offers 
for exchange for good herbarium specimens, or selected specimens 
for sale, labelled, and carriage prepaid, at 10 cents a specimen. The 
testimony to the excellence of his specimens we have heretofore 
iven: 
¢ At the close of another season I am able to report a few finds 
_ which may be of more or less interest. 
Sisymbrium canescens, Nutt. Cliffs, shore of I.ake Champlain, 
near Westport, N. Y. 
Halenia deflexa, Griseb. In low woods on a river bank, Char- 
lotte, Vt. Ne. 
