256 
a level of about two feet above the highest tides with promiscuous 
material of sand, dirt, gravel, ashes and cinders, with the garbage 
and refuse of the city, dredgings from the docks, and such ballast 
deposits as chance intermingled with the rest. The surface of most 
of the tract has lain undisturbed for several years past, without addi- 
tional deposits, and it is now mostly grown over with turf and weeds. 
About the wharves and near the Ferry Landing some ballast is occa- 
sionally deposited, and another portion serves still as dumping 
ground for rubbish of every description. 
My attention having been directed to these grounds last autumn, 
I determined to observe its flora this season, so far as leisure would 
permit. I have, accordingly, visited them about once in two weeks, 
beginning May 14th (a month later than intended) with the results 
given below. Many of these visits were in company with Mr. M.. 
Ruger, or Mr. W. H. Rudkin, by whom a number of the species 
were first detected. _ A few were found near the wharves and recent 
deposits, the great majority were obtained in the undisturbed, over- 
. grown, waste fields, where they seem to be permanently established. 
Some 24 of these species (printed in capitals) are not in Gray’s Man- 
ual; and these, with ro additional species (in italics) are not men- ’ 
tioned in the local catalogue of the BULLETIN; or, if mentioned, 
were there ascribed to stations already destroyed. 
As “new species ” were found at every visit, I have no douht 
that a more careful search would have considerably increased this 
list. The more common plants of the neighborhood, including the 
seaboard Asters, Solidagos, Pluchea, Helianthi, &c., are not included. 
Many of the plants are undoubtedly from ballast ; others from 
seeds among city refuse. A few garden plants from this last source 
have been inserted, as it was obvious from the places where gathered 
that they had maintained themselves for several seasons. Where 
not otherwise noted, the plants are believed to be of English origin; 
by “European ” is meant from the Continent.. Some unrecognized 
aes were collected, which are not yet determined. 
. Delphinium consolida, L. Var., Ajacis.—Sept. One speci- | 
men. On wharf. 
2. PAPAVER Ruokgas, L.—July.. In several places. 
3. Humaria officinalis, L.—July and Sept. Scarce. 
4. Lepidium Draba, L.—May. In three dense patches.—L. ruder- 
ale, L., and L. campestre, L. May and June. In great 
abundance. 
5. ZLhlaspi arvense, L.—May and June. In profusion over several 
acres. 
6. Camelina sativa, Crantz.—May—July. Abundant. 
7. Erysimum cheiranthoides. L.—Abundant. A second growth is 
now (Sept. 30) in flower and fruit. 
8. ERYSIMUM REPANDUM, L.—June. Abundant. European. 
9. Barbarea praecox, R. Br,—June—July. Scarce. 
10. Stsymbrium Sophia, .—June. Abundant. 
11. RAPISTRUM'‘RUGOSUM, All.—July. European. Plentiful. 
12, NESLIA PANICULATA, Desv.—June. European. Scanty, near 
ship yard. Not before reported. tae 
