58 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
* CERASTIUM SEMIDECANDRUM L, 
Common in and near the town in sandy fields and lots and 
along roadsides ; abundant all over the sandy level by the hotel 
at Wauwinet, June 11,1909; near Miacomet Pond. In full flower 
and fruit May 30, 1909, evidently blooming much earlier than C. 
vulgatum. The two species are frequently found together and 
when thus seen side by side the differences between them are 
strikingly apparent. C. semidecandrum is decidedly the more 
viscid-pubescent and particles of sand and other foreign substances 
often adhere thickly to its viscid cymes. 
CERASTIUM ARVENSE L. 
A characteristic plant of the island growing everywhere in 
sandy fields, on dry banks and along roadsides. In May and early 
June it is conspicuous from the abundance of its pure white flowers ; 
by August it is mostly dried up and little noticeable. In full 
flower May 30, 1909; passing out of bloom June 7, 1908, and no 
flowers seen after June 15. 
SAGINA PROCUMBENS L., 
Frequent, and widely scattered over the island. Often found 
growing in the crevices of brick sidewalks in the town and common 
on damp levels by some of the ponds on the south shore; Surfside; 
head of Tom Never’s Swamp ; Siasconset ; near Hummock Pond. 
Sometimes growing in contracted tufts in pure white sand, In 
full flower from May to September. 
ARENARIA SERPYLLIFOLIA L. 
Common, usually in poor or sandy soil in dry places. In full 
flower May 30, 1909, mostly dried up by mid-August. 
MOEHRINGIA LATERIFLORA (L.) Fenzl. 
Common or, locally, even abundant in or about thickets on the 
eastern side of the island through Shimmo, Shawkemo, Quaise, 
and Polpis, to Pocomo and Squam ; Tom Never’s Swamp; Cos- 
katy ; among the cedarson Coatue. Just in flower June 2, 1909 ; 
mostly dried up by the middle of August. 
Ammodenia maritima (Raf.) comb. nov. 
Adenarium maritimum Raf. New Fl. N. Am. 1: 62. 1836. 
Arenaria peploides L., var. robusta Fernald, Rhodora 11: 114. 
1909. 
