202 Southern Extension of California Flora.  |ZOE 
Bay and San Quintin. All plants mentioned in these publi- 
cations as having been collected about San Quintin and farther 
south have been omitted from the following list. The writer 
made an excursion in May during the present year to San Pedro 
Martir, starting from San Diego, and the appended list contains 
names of plants collected at their most southern known habitat, 
and on this account is not a complete one of the flora of San 
Pedro Martir as it might seem from the frequency with which 
the name of this mountain appears: 
Ranunculus aquatil’s 1. Common in and about the ponds of 
San Pedro Martir. 
Ranunculus hydrocharoides Gray. Very abundant in the 
ponds of San Pedro Martir. 
Aquilegia truncata F. & M. Common on San Pedro Martir. 
Romneya Coultert Hary. This is often seen along the valleys 
between Tia Juana and Colnett, and it is abundant on the hills 
about San Pedro Martir. 
Dendromecon rigidum Benth. Along the edge of the plateau 
of San Pedro Martir. 
Papaver Californicum Gray. On burned ground twenty miles 
south of Tia Juana. 
Arabis Holbellii Hornem. San Pedro Martir. 
Vesicaria Fendlert Gray. San Pedro Martir. 
_ Barbarea vulgaris R. Br. Common at the locality known as 
La Grulla, where it was probably introduced. 
Cardamine paucisecta Benth. Cafion Salado. 
Viola pedunculata 'T. & G. Colnett. 
Arenaria alsinoides Willd. San Pedro Martir, perhaps its 
northern limit. 
Calyptridium monandrum Nutt. Abundant from near Colnett 
to San Pedro Martir. 
Montia fontana 1, Very small plants growing amongst other 
vegetation in damp soil on San Pedro Martir. 
Sidalcea malveflora Gray. Growing in the wet meadows of 
San Pedro Martir. 
