366 PROCEEDINGS OF THE AMERICAN ACADEMY 



Rio on the Colorado, S. E. California, by J. G. Lemmon, March, 

 1881. A peculiar species, with the numerous seeds of a Calandrinia, 

 but the flowers more like those of Claytonla^ and the number of 

 stamens constant. 



SiLENE Pakishii. Perennial, the leafy stems (4 to G inches high) 

 clustered upon a thick root, pubescent tbroughout with a short wool 

 which is longer on the stems and viscid : leaves oblanceolate, acute or 

 acuminate, 1 or 2 inches long: flowers 3 to 5, approximate and leafy- 

 bracted, on short petioles ; calyx an inch long, narrowed below, the 

 acuminate teeth 3 or 4 lines long ; petals white or nearly so, with 

 a broad claw, the scarcely exserted blade 2-parted and the lobes 

 deeply bifid into hairy filiform segments with a narrow lateral one on 

 each side ; appendages broad, truncate and toothed : styles at length 

 long-exserted : capsule very shortly stipitate, nearly equalling the 

 calyx: seeds flattened, with a wing-like lacerate double crest. — In 

 the San Bernardino Mountains, California; L. B. & W. F. Parish, 

 August, 1881. A well-marked species, allied to S. Hooker i and 

 S. Callfornica. 



SiLENE PLATYOTA. Minutely puberulent, glandular above, the 

 slender erect or ascending stems 1 \ feet high : leaves oblanceolate, 

 acute or acuminate, the lower with ciliate winged petioles : peduncles 

 rather slender, 1-3-flowered : calyx narrow, green-nerved, acutely 

 toothed, 6 lines long; petals greenish, broadly auricled, the free lobes 

 of the auricles entire or sublacerate ; blade bifid, the oblong lobes 

 entire or usually irregularly notched ; appendages oblong, lacerate ; 

 filaments and claws somewhat villous ; styles and stamens slightly 

 exserted: capsule oblong, 4 lines long, on a short stipe: seed crested 

 with a single row of tubercles, the sides tessellated. — In the Cuyamaca 

 Mountains (Dr. E. Palmer, 1875), in the San Bernardino Mountains 

 (.J. G. Lemmon, 1879), and in the San Jacinto Mountains (Parish 

 Brothers). Belonging to the S. Doiiglasii group. 



SiLENE PLiCATA.. Rather stout and tall (2 feet high or more), 

 pubescent with short spreading somewhat glandular hairs : leaves 

 oblanceolate, or the upper narrowly lanceolate, acute, 3 or 4 inches 

 long : inflorescence elongated, naked above, the erect peduncles 1-3- 

 flowered: calyx ovate, with 10 green nerves, 4 lines long, the triangu- 

 lar teeth a third as long; petals white, a little exserted, the blade 

 bifid with oblong lobes and narrow acute lateral teeth, the claw broad 

 and the produced auricles nearly equalling the short-oblong entire 

 appendages and somewhat folded upon the base of the blade: stamens 

 and styles included : capsule sessile or nearly so, ovate-oblong, 4 or 5 



