194 THE FLORA OF PENIKESE ISLAND. 
grass and sheep. There are no flowering plants on the island that 
are at all rare, but some species very common on the mainland 
are conspicuously absent, for instance the asters and golden rods. 
The flora of Gull, a very small island just separated from Peni- 
kese, is included. Several plants, as Lathyrus maritimus and Sol- 
idago sempervirens, are found there which are not in the flora of 
the main island. Probably they once grew there but have oo 
exterminated. Such plants are marked with a star(*). 
RANUNCULACER, ; x GERANIACEÆ. 
Ranunculus cymbalaria Pursh. Oxalis stricta L. 
CRUCIFERÆ. ANACARDIACEZ, 
Capsella Bursa-pastoris Mönch. Rhus toxicodendron L.* 
Sisymbrium officinale Scop. 
Lep idium TEEI cum L. ; 2 
B LEGUMINOSZ. Ý 
Brassica sinapistram Boiss. 
Cakile Americana Nutt. _ Trifolium repens L. 
Raphanus Raphanistrum L. Trifolium Pi parent L. 
: Trifolium arvense L. . 
. Lathyrus maritimus Big.* 
VIOLACES®. ; 
Viola sagittata Ait. acerca 
: : Potentilla argentea L. 
HYPERICACEÆ. Fragaria Virginiana Ehrh. 
i Fragaria vesca L. 
Hypericum mutilum L. ; Rubus villosus Ait. 
CARYOPHYLLACEÆ. t HALORAGEÆ. 
Cerastium viscosum L. ~ Myriophyllum scabratum Mx. 
Stellaria media Smith. : 
Arenaria peploides L F 
aria salina Presl. ONAGRACEÆ. 
Spergula arvensis L. 
ina procumbens L, - Ludwigia palustris Ell. 
- Mollugo verticillata L. 
p i E UMBELLIFERÆ. 
Archangelica Gmelini DC.* 
COMPOSITÆ. 
= Seeron Canadense L. : 
Solidago -sempervirens ns L.* 
