200 PITTONIA. 
A glance at the list will show that a very great proportion 
of the species are still unknown from any other part of the 
world. But it will not do to call all these endemic plants. 
They may or they may not be such; for those parts of the 
Lower Californian peninsula which lie opposite the island 
and not more than forty or fifty miles away, are almost com- 
pletely a ferra incognita, to this day. It is not improbable 
that, whenever both the island and the nearest mainland shall 
have been fully investigated as to their flora, it will be shown 
that this, like the other islands of the Pacific Coast, has its 
own considerable proportion of species truly endemic ; until 
such a time shall come, it will be idle to speculate upon the 
possible geographical limits of these still strange and sur- 
passingly interesting Cedros plants. 
A List OF THE KNown Species or CEDROS ISLAND 
PLANTS. 
1. CLEMATIS PAUCIFLORA, Nutt. ; Torrey & Gray, Fl. i. 657. 
Two or three specimens in a shady and fertile part of the 
principal cation visited. 
2. SISYMBRIUM PINNATUM ( Walt.), Greene, Bull. Cal. Acad. 
ii. 390. One small plant, in ripe fruit, in the mouth of a dry 
open canon. 
3. CLEOME IsowERIs — [someris aborea, Nutt.; Torr. & 
Gray, Fl. i. 124. Frequent, but stunted. 
4. OLIGOMERIS sUBULATA (Delile), Boiss. Common near 
the sea. 
5. FRANKENIA PaLMERI, Watson, Proe. Am. Acad. xi. 124. 
In considerable quantity in one locality near the northeastern 
extremity of the island. 
