Mr. Nuttall on two new Genera of Calif ornian Plants. 137 



at the sides, of one roundish cell, containing about 6 seeds and 

 without valves, or opening merely by the divergence of the 

 bases of the 3 styles. Seeds roundish, subcylindric, punctated 

 and somewhat rough, containing a farinaceous perisperm. 



Hab. Springy bogs and open marshes by streams around 

 Sta. Barbara and Sta. Diego in Upper California. This 

 present plant is very nearly related to the Houttuynia cor- 

 data of Thunberg, differing principally in the coalescence of 

 the fruit with the spadix. Compared with a specimen in the 

 Herbarium of the Academy of Natural Sciences in Philadel- 

 phia, the aspect of the flower and leaf, as well as the mode of 

 growth, is also exceedingly similar. 



* DIPLACUS. 

 Natural Order, Personate. Linnsean Class and Order, 



DlDYNAMIA ANGIOSPERMIA. 



Calyx prismaticus, apice 5-fidus. Corolla ringens, 5-fida, lobis subae- 

 qualibus plerumque emarginatis. Stigma bilamellata. Capsula lineari- 

 oblonga, biloculavis, placenta (s. receptaculum seminis) lata, demum 

 bipartita, adnata. Semina minuta, utrinque subulata. 



Frutices Californica?, Mimulo proximce; folia opposita plerumque viscosa. 



Diplacus* punicea, fruticosa viscosa glabra, foliis lineari-lanceolatis 

 subconnatis vix serrulatis acutiusculis, calycinis laciniis inaequalibus 

 acuminatis ; corolla punicea, lobis emarginatis ; caule elato ramosissimo. 

 Nutt. in Bot. Mag. t. 3655. 



A very elegant shrub, flowering in its native soil nearly the 

 whole year. Like the other species of the genus, it has alto- 

 gether the aspect of a Mimulus, and one of them has long been 

 known under the name of Mimulus glutinosus. The present 

 species is a much taller growing plant, and more of a true 

 shrub. The leaves are of a deep green, narrow lanceolate and 

 somewhat acute ; the stems and calyx have also a purplish 

 hue, and the corolla, considerably exserted, is of a deep vel- 

 vety scarlet with shades of pink lake : its lobes are also con- 

 stantly emarginate. 



Hab. In sandy loam by the borders of small winter 

 streams, attaining commonly the height of a man, growing 

 near to Sta. Diego, in Upper California. Flowering in April 

 and May. In cultivation continuing to bloom apparently 

 nearly the whole year. 



