BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 69 
Bursa Bursa-pastoris (L.) Britton. 
A commen weed occurring in various more or less distinct 
forms or elementary species. 
DRABA VERNA L, | 
Common in sandy fields and along roadsides in and near the 
town ; Monomoy; Shawkemo. Plants past flowering and mostly 
dried up by May 30, 1909, but in protected spots still green and 
retaining mature fruit. On June 7, 1908, only withered plants 
were to be found, many retaining the dried septa of the pods. 
* ERYSIMUM CHEIRANTHOIDES L, 
Two plants in waste ground at Shimmo Valley farm, just in 
flower June 2, 1909. 
* ALYSSUM ALYSSOIDES L, 
Along a sandy bank and adjoining grassy level by an old stone 
foundation on the cliff. In full flower and fruit June 2, 1909. 
Petals at first yellow, early becoming pure white. 
* CONRINGIA ORIENTALIS (L.) Dumort. 
Wauwinet, June 11, 1909, two plants just in flower in waste 
spot back of the beach with 7h/aspi arvense, Brassica arvensis, and 
Brassica campestris. Petals palest yellow or cream-colored. 
Note. — Hesperis matronalis L. is occasionally found by street- 
sides in the town as a casual escape from adjoining gardens. 
RESEDACEAE 
RESEDA LUTEA L, 
Reported by Mrs. Owen, on the authority of Mr. Dame, as 
being well established in a pasture in Polpis in August, 1886. 
SARRACENIACEAE 
SARRACENIA PURPUREA L, 
Occurs in a few sphagnum bogs between Polpis and Sachacha. 
In one of the larger bogs it was numerous enough to be rather 
conspicuous when in full flower June 15, 1908. 
DROSERACEAE 
DROSERA ROTUNDIFOLIA L, 
Common in sandy and peaty bogs. 
