Postelstia 95 
POTAMOGETON PUSILLUS LL. Sp. Pl. 127: 1753. 
ingvake Sam Juan. Aweo7- Res 
\O 
(oe) 
ZOSTERA MARINA L. Sp. Pl. 968. 1753. In shel- 
tered places of San Juan Harbor. Found 
occasionally on the beach by the Minnesota 
Seaside Station after heavy southwest storms. 
PNULGa 2. IR2 On OF 
PEM EROSPADEX SCOULERT Elook. Fl: Bor. Am: 
2:171. 1838. Common in tide pools and on 
jagged rocks below the half tide mark. July 
JUNCAGINACEA 
TRIGLOCHIN MARITIMA L. Sp. Pl. ros. 1753. In 
moist turf on the rocky- beaches. June 28. 
eet. 
GRAMINE 
PANICUM UNCIPHYLLUM Trin. Gram. Panic. 242. 
7820.,Qn rocky beaches, crevices of the 
slate rocks. July to: K.-and B. 107. 
AGROSTIS EXARATA Trin. Gram. Unifl. 207. 1824. 
On steep, rocky beaches. Straits of Fuca 
and on sandy shores of Lake San Juan. A 
very variable species. July 22, 25. R. 806,810. 
