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



The generic name alludes to the splitting of the capsule, 

 attached to each valve of which is seen a large placenta, and 

 under its edges are found the slender subulate seeds. 



Diplacus glutinosa. (Mimulus ylutinosus, Willd.) If the 

 plant now before me (so marked in the Herbarium of the 

 Academy of Natural Sciences of Philadelphia, making for- 

 merly a part of that of the late Mr. Schweinitz) be indeed the 

 true species, it is readily known from the preceding by the 

 shorter and wider somewhat obtuse leaves, and particularly 

 by the inferior length of the peduncle, the wider and more 

 obtuse, as well as nearly equal and proportionately shorter 

 calyx. It is probably, however, different, and the plant of 

 Wendland, u caule hispido glutinoso" entirely unknown to me, 

 appears distinct from the M. aurantiacus of Curtis. 



Diplacus * latifolia ; suffruticosa, viscosa ; foliis oblongis sublanceolatis 

 obtusiusculis serrulatis, subtus puberulis; pedunculis brevibus; caly- 

 cibus glabris, laciniis inaequalibus acutis ; corolla? lobis vix emarginatis, 

 latis. 

 Nearly allied to the two preceding, but readily distinguish- 

 able from the first by being scarcely more than an under shrub, 

 with broader leaves and larger shorter yellow flowers, and with 

 the lobes of the corolla scarcely emarginated. This is also a 

 very showy species, and may also be the Mimulus glutinosus, 

 an inadmissible specific name, as all the species of the genus 

 are equally glutinous. In flower round Montersey, Upper 

 California, in April. 



Diplacus * leptantha ; fruticosa viscosa, foliis oblongo-lanceolatis acutius - 

 culis subserrulatis glaberrimis ; pedunculis brevissimis ; calycibus gla- 

 bris tubulosis elongatis, laciniis inaequalibus acutis brevibus ; corollas 

 lobis latis, oblique emarginatis. 



Of this very distinct species I have seen only a single good 

 specimen in the Herbarium of the Academy of Natural Sci- 

 ences of Philadelphia, communicated to the late Mr. Schwei- 

 nitz by Sir William Jackson Hooker, and marked " Mimulus 

 glutinosus, from Mr. Menzies." From all the preceding easily 

 distinguished by the great length of the calyx and flower. 

 The leaves also are more attenuated upon the petiole, per- 

 fectly smooth, and unusually thin. The flower of this species 

 is also yellow. 



