THE RIPARIAN BOTANY OF THE LOWER SACRAMENTO. 243 
ing an area six to twelve inches in diameter, here takes of a 
huge aspect, its great fleshy stems being three and four feet 
in length. Other introduced plants are: Trifolium repens, 
Rivinus; Medicago sativa, Moris.; Melilotus alba, Lam.; 
M. Indica, Allioni; Malva parviflora, L.; Nasturtium Armo- 
racia, Fries; Rumex crispus, L.; Polygonum aviculare, L.; 
Amarantus albus, L.; A. retroflexus, L.; A. hypochon- 
driacus, L.; Chenopodium anthelminticum, L.; C. ambro- 
stoides, L.; C. rubrum, L.; C. album, L.; Raphanus sativus, 
L.; Daucus Carota, L.; Anthemis Cotula, DC.; Xanthium 
spinosum, L.; X. Candense, Mill.; Centaurea Melitensis, L.; 
Carduus lanceolatus, L.; Latuca scariola, L.; Cichorium 
Intybus, L.; Sonchus oleraceus, L.; S. asper, Vill.; Convolvu- 
lus arvensis, L.; Marrubium vulgare, L.; Plantago lance- 
olata, L.; P. major, L.; and Panicum Crus-Galli, L. 
In many places outside the levees, beyond the bounds of 
cultivation, and on small islands, the indigenous growth is 
very rank, and the characteristic riparian plants may be found 
in abundance with hardly an admixture of the numerous 
foreigners. From such situations I have the more interesting 
plants of the region, including a number of additions to our 
flora. Hypericum mutilum, L., Eclipta alba, Hassk., 
Bidens frondosa, L., and Lippia lanceolata, Michx., 
collected Sept. 16,17, 1891, and Amarantus hypochondriacus, 
L., and Lippia cuneifolia, Steud., gathered October 4,5, 1893, 
were all new to California and, with one exception, to the 
Pacific Coast. 
The following notes were made upon some of the more © 
characteristic indigenous herbaceous plants of the region : 
Lathyrus Jepsonii, Greene. Everywhere along the tide 
channels. 
Psoralea macrostachya, DC. “Leather Root.” 
Glycyrrhiza glutinosa, Nutt. In the drier places. Andrus 
Island; Main Prairie. 
Euphorbia serphyllifolia, Pers, Very abundant. Andrus 
Island. : 
Hibiscus Californicus, Kellogg. Near Rio Vista. 
