176 Rhodora [SEPTEMBER 
fore they are fully developed. Atriplex arenarium is frequent, and 
Aster tenuifolius, with its pretty daisy-like flowers, is in at least one 
of the marshes. Last fall we were much pleased to find Bassia hir- 
suta,! so common in South Boston, sparingly introduced close to the 
salt water, and near by Euphorbia polygonifolia in the sand. "There 
are also a few plants of the big mallow, Hibiscus Moscheutos. Just 
back from salt water grows the pretty pink Strophostyles angulosa. 
Near the salt marsh, not far from its two parents, there are plants 
of the hybrid Solidago asperula, always an interesting find. At one 
place, the cottage settlement of Wampatuck, there is an abundance 
of the rare S. speciosa, growing among the low oaks and in the vacant 
lots. Š. suaveolens is especially abundant in some places. In the 
southern part of Hingham there is plenty of S. rugosa, var. sphagno- 
phila, and one of the commonest species is S. Elliottii, which drops 
out to the north, only to reappear again in Nova Scotia? 
Asclepias phytolaccoides is frequent by wooded roadsides, a tall, 
handsome plant. .4. quadrifolia is a rarer plant which is sometimes 
found. A. verticillata, the rarest species around Boston, I found in 
some abundance on ledges when I first came to town, but I have not 
been able to find it recently. Triosteum perfoliatum we found last 
summer, growing in a thicket on an esker. It was 120 cm. tall, and 
isin many ways quite different from var. aurantiacum (Bickn.) Eames 
& Wiegand which is commoner in eastern Massachusetts, though it 
has not been found here.  Ludvigia alternifolia is a queer plant, grow- 
ing in two places, one beside a rivulet in dry open woods, the other 
close to the railway track in the village, as if introduced there. 
One of our friends, Mr. Cyril C. Smith, has called our attention to 
the variation in the number of leaves in the whorls of Lysimachia 
quadrifolia. This is exceedingly abundant in dry open woods, Al- 
though the great majority of the plants have four leaves to each 
whorl, there are numerous variants, having two, three, five, six, and 
even seven leaves. 
One of the best discoveries was Corallorhiza trifida, which Dr. 
Cheever found near a cold spring, a sitiation similar to the place 
where it grows in Norwood. Arethusa bulbosa was also found by him 
in a small bog, and in the same bog is Rhododendron canadense, a rare 
! Ruopona xi. 120, 1909; xvii. 176, 1915. 
* Fernald, Ruopona xxiii. 144, 151, 157, 169, 292. 1921. 
