54 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
in autumns favorable to its highest color development, it forms ex- 
tensive reaches of vivid scarlet. At the middle of June the seed- 
ling plants are only 2-5 cm. high. In August and September it 
is in full flower. Anthers appearing sessile, 0.5 mm. long. 
SaticorniA BicELovil Torr. 
Abundant on Coatue; rather common about Polpis Harbor ; 
local at the western end of the island and along the harbor shore ; 
flowering in August and September. Anthers appearing sessile, 
twice the size of those of S.ewropea. In late autumn it turns deep 
purple-red or claret color. 
SALICORNIA AMBIGUA Michx. 
Abundant on wet sand on Coatue, and occurring locally at all 
points where S. Bigelovii was found. Plant well developed by the 
middle of June, flowering in August and September. Anthers I 
mm. or more long on distinctly exserted filaments. In late autumn 
this species turns light yellowish or brownish red. 
DonpiA LINeEARIS (EIl.) Millsp. 
Occurs rather sparingly along shores and the borders of salt 
marshes, flowering in August and September ; along the harbor ; 
Bache’s Harbor; Coatue; western end of the island. 
On Marthas Vineyard, where this species is very common, I 
have collected a form (it may occur on Nantucket also) which 
answers perfectly to the description of Swaeda americana (Pers.) 
Fernald, as interpreted by Fernald in Rhodora g: 146. Au 1907. 
From observations made in the field in September and October I 
was unable to convince myself that this form was anything more 
than a state assumed by the common plant when more or less sub- 
ject to tidal submersion. Its prostrate or semi-prostrate habit 
appeared to be the result of a heavier and more fleshy development 
under strongly saline influence. 
* Donpia MARITIMA (L.) Druce. 
Perhaps rather more common than D. dinearis and often found 
with or near it, but usually in wetter places, flowering at the same 
seasons, 
Satsota Katt L. 
Common on sea-beaches, flowering in August and September. 
The seedling plants begin to appear early in June. 
