1899] Harper, — Additions to the flora of Worcester Co. 203 
* Elatine Americana, A few inches under water in the north end 
of Lake Quacumquasit, Brookfield, September 4. 
Apocynum hypericifolium, Ait. (A. cannabinum var. hypericifolium, 
Gray). Dry sandy soil near Quinebaug River, Southbridge, August 
17 ; lake shores, Brookfield, September 4. 
' Centaurea nigra, L. Dry roadsides, Hardwick, July 2. Not men- 
tioned in Mr. Jackson's catalogues, but recorded from Hardwick as early 
as 1829, by Dr. Hitchcock (Catalogue of plants growing without culti- 
vation in the vicinity of Amherst College, p. 19). 
The following plants are varieties (new to the county) of species 
already known in the county : — 
Eleocharis obtusa, var. jejuna, Fernald. Bottom of dried-up pool 
in woods near Hatchet Hill, Southbridge, September ro. 
Eriophorum gracile, var. paucinervium, Engelm. In a small bog, 
surrounded by woods, near the summit of Shumway Hill, Sturbridge, 
July 23 (elevation, 980 feet). 
Carex stricta, var. angustata, Bailey. In wet meadows, generally 
with the type and almost as common, Southbridge, May 14; Dudley, 
June rr. 
Carex stricta, var. strictior, Dew. Wet meadows near the Quine- 
baug River, Sturbridge, May 28 ; Dudley, June rr. 
Carex laxiflora, var. patulifolia, Carey. Grows in crevices of cliffs 
facing eastward, on rich shady hillsides, often with the similar C. p/aty- 
hylla, Carey. Southbridge, May 14. 
Carex tribuloides, Wahl. (the type). Moist shaded meadow. 
Southbridge, June 9. 
Polygonum acre, var. leptostachyum, Meisn. Along lakes and rivers, 
Brookfield, August 13 and 15. 
Of the plants of the Scirpus Eriophorum group, as recently revised 
by Mr. M. L. Fernald (Proc. Amer, Acad. XXXIV, pp. 498-503), I 
have collected the three following in Worcester County : — 
Scirpus Eriophorum var. cyperinus, Gray (Eriophorum cyperinum, 
L.) is the common form, in wet places throughout the county. 
Scirpus Eriophorum, var. condensatus, Fernald. In rather dry sandy 
soil, near Wallum Pond, Douglas (and extending southward into Rhode 
Island), August 6. : 
Scirpus atrocinctus, Fernald. Quite common in wet meadows, 
Southbridge, June 6; Charlton, June 18; New Braintree and Dana, 
July 2; and at 1990 feet on Mt. Wachusett, July 4. 
