7 eg: 
Vol. VI., No. 33.] BULLETIN oF THE TorREY Boranicat Cus. [New York, Sept., 1877. 
§ 182. Callitriche Nutallii, Torr—mIn the last No. of the BuL- 
LETIN was a note from Dr. Joor on the hypogeous fruit of this 
species. On reading this Dr. Engelmann wrote to Dr. Thurber, 
calling attention to the fact that the same peculiarity had been 
observed by Prof. Wm. M. Carpenter, of Jackson, La., as recorded 
in a memorandum in the Torrey Herbarium. On consulting the 
Herbarium we found the note referred to under a specimen labelled, 
C. pedunculosa, Nutt. The peculiarity is thus described : 
“Callitriche— * * * The flower axillary, the germ sessile at 
first but afterwards peduncled; the peduncles turning downward 
and J the reniform fruit buried beneath the surface in the same 
manner as the Arachis hypogea. _ 
“It grows in little patches as the terrestris, which it differs from 
in the circumstance of burying the fruit, and somewhat in the 
form of the fruit. 
“It roots at the lower joints and, being also attached to the 
ground by the elongated peduncles, it is very hard to detach it 
from the soil.” 
The date of this note Mr. Le Roy thinks is somewhere about 1830. 
§ 183. Notes from Rhode Island.—My friend, Mr. Thomas 
Battey, of this city, informs me that in a large number of flowers of 
Impatiens fulva, Nutt., which he has examined, he has found the 
sacs all perforated by humble-bees. He has watched these bees 
about the flowers. You may remember that Dr. Gray says this is 
only likely to happen in a profusely flowering species, 
One of my summer class has seen a bee enter the corolla of 
Gentiana Andrewsii, Griseb., and remain hidden within for some 
time. I suspect there is a very pretty cross fertilization in this 
flower, but I doubt if bees are the agents. Where the expanded 
and flattened filaments unite with the corolla very neat little nec- 
taries are formed, much like those figured in ature by Miller for 
some alpine species. The extrorse anthers point in the direction 
of cross fertilization. WoW. BAILEY. ., 
Provipence, R. I. oa 
§ 184. Is Ailanthus glandulosus monoecious ?>—This tree has of 
late years very much disappeared from the sidewalks of our streets, 
where it was formerly planted to a large extent on account of the 
abundance of shade furnished by its dense foliage. Most of the 
trees that were planted proved to be staminate, it being rare to find 
one bearing the curiously shaped samara. Last Spring when the 
trees were in bloom I examined a large number in this city, all of 
which bore staminate flowers. A few days ago I noticed there had 
grown from the trunk of one of the trees from which I had gath- 
ered specimens, and at some distance below the main branches or 
limbs, a smaller branch, of this season’s growth, and it had borne a 
panicle of fruit, the samaras though not numerous being of full 
size. I am satisfied this tree could not have borne any fruit in 
former years, and now, having looked at a number of others that I 
examined when in blossom last Spring, I have not succeeded in 
finding another one with fruit on. Isaac C, MARTINDALE. 
CaMDEN, N. J., Aug. 30, 1877. 
