242 CALIFORNIA ACADEMY OF SCIENCES. 



pods as there are carpels; in the less common form dehis- 

 cing at the apex, and afterward opening along one or more 

 of the placental lines. 



P. leiocarpum Fisch. & Mey. is one of the smooth forms, 

 not even separable as a variety. 



Platystemon lineaeis (Benth.) 



Annual, branching, pale-green, more or less villous: leaves 

 linear, sessile or clasping: peduncles erect, elongated: se- 

 pals villous: petals 6-12, cream-color, or the alternate ones 

 yellow, of ten persistent : filaments dilated to near the top; 

 anthers linear: ovary lobed, the compound of 3-qo some- 

 what navicular carpels; placentee several near each margin 

 of the carpel, the edges of which approach but do not 

 unite: stigmas linear-triangular: seeds dark-brown, shin- 

 ing, somewhat incurved along the raphe. — Platystigma lin- 

 eare Benth. 



Platystemon Okeganus (Benth.) 



Annual, branching, glabrous, very slender, with long- 

 jointed dichotomous stems: leaves ovate-spatulate to oblan- 

 ceolate, or the upper ones linear, entire or denticulate: 

 sepals minutely scabrous near the top: petals usually 6, 

 cream-color: filaments often obliquely dilated near the base: 

 anthers short to long oval: carpels three or more, tipped by 

 narrow stigmas; ovary linear, twisted, the carpels tapering 

 at each end, with one nerviform placenta at each margin: 

 seeds dark-brown, shining, oval or ovate, with prominent 

 raphe. — Platystigma Calif ornicum Benth. & Hook. P . Ore- 

 ganum Benth. & Hook. P. denticulatum Greene. Mecon- 

 ella Oregana Nutt. 31. Califomica Torr. 31. denticulata 

 Greene. 



Oanbya CANDIDA Parry. — Examination of numerous speci- 

 mens shows that this plant is even more closely related to 

 Ardomecon than had been previously suspected. 



The petals difi'er much in persistence and the capsule is 



