VOL. III. | Flora of the Cape Region. Ay is 
the orchids and ferns, etc., belonging in general to a more southern 
flora than those of the spring. 
Amongst the plants growing at lower elevation are the following 
that flower in the springtime: Szsymdriun crenatum, Atamisquea, | 
' Abutilon Californicum, Vitis, Sapindus, Lupinus, Erythrina, C@sal- 
pinia placida, Prosopis, Acacia Farnesiana and Wrightit, Lysiloma, 
Pithecolobium Mexicanum, Cotyledon, Lythrum, Mamillaria, Ce- 
reus pecten-aboriginum, Pringlei, Schottit and 7) hurbert, Diodia cras- 
sifolia, Eryngium, Hofmeisteria, Pluchea odorata, Buddleia croto- 
notdes, Samolus ebracteatus, Phacelia, Nama, Euphorbia Xanti and 
two or three Agaves. This collection of names, unlike that of the 
mountain spring-blooming plants, does’ not remind one of a north- 
ern flora. It might be expected that Lupinus, Lythrum, Samolus, 
Phacelia, and Nama, would blossom in the spring, but that habit 
does not seem fit for such semi-tropical genera as Lysiloma, Ery- 
thrina, Albizzia, Pithecolobium, etc. 
It is often impossible to decide with certainty whether a plant is 
native, or whether it should be considered an immigrant recently 
introduced by the agency of man. Conocarpus, for instance, is a 
rare bush of the southern shores and belongs to the maritime 
flora of tropical climates, a flora represented along the coast by 
several species of plants but, though probably derived from the 
south, does not belong to the class generally meant by “‘ introduced 
plants.’’ 
The weeds of the fields and trails, certainly derived from other 
regions, are: Malva borealis, Brassica nigra, Melilotus parviflora, 
Momordica charantia, Xanthium strumarium, Sonchus oleraceus, 
Polygonum acre, Desmodium scorpiurus, and there are others more 
common; the universally distributed weeds of towns and cultivated 
- grounds, that are not so evidently introduced, these are: Portulaca 
oleracea, Sida rhombifolia, Cassia Absus & Tora, Mollugo verticiliata 
G cerviana, Richardia, Amarantus, and Euphorbia. . 
Only four of the genera of the Cape Region are supposed to be 
endemic, and three of them are certainly not very distinct from 
their nearest relatives. The most distinct, Coulterella, has been 
found only along the gulf shore, east from La Paz, but as it is 
_— strictly a maritime plant it is to be expected from neighboring coasts. 
‘The annexed table, showing in a condensed form the geo- 
graphical distribution of the flowering plants and ferns and 
