44 The Botanical Gazette. [February, 



mentose: heads 5-7-flowered, the lower scattered, cernuous, 

 and subtended by lanceolate foliaceous bracts, the upper ap- 

 proximate, subspicate, erect, and with filiform bracts, which 

 are adnate to the bases of the pedicels: involucre cylindric, 

 of 5-7 linear or narrowly oblong-, rigid, more or less carinate, 

 acute bracts: pappus a little tawny: lobes of the corolla as 

 long as the throat. — On Mt. Rainier, at 6,500 feet altitude; 

 collected by C. V. Piper, August, 1888. 



In L. hypoleuca Benth. the throat of the corolla is compara- 

 tively long and the teeth short. The proper tube is also 

 short and manifests near the middle a peculiar change of con- 

 sistence, the lower part being of firmer texture and perceptibly 

 greater diameter than the upper. In L. Piperi the proper 

 tube is long and slender, and is of like texture throughout. 



The other plant to be described is a Silene, identical with 

 two unnamed specimens already in the Gray Herbarium from 

 other localities. On investigation it has been found that 

 these plants, while agreeing closely with one another, differ 

 in several significant particulars from any member of the 

 genus yet described, and deserve therefore a place as a new 

 species, the characters being as follows: 



Silene Suksdorfli. (PI. VI, figs. 9-11).— A low cespitose 



alpine perennial: stems 2-3 inches high, usuallv simple, 

 1-3-flowered, minutely pubescent below, glandular above: 

 cauhne leaves about two pairs, 3-7 lines long, one line wide, 

 linear, obtuse or acutish; radical leaves numerous, crowded, 

 similar to the cauline or a little spatulate: calyx glandular- 

 pubescent, broadly cylindric, 5 lines high by 3 lines broad, 

 the ten nerves conspicuously anastomosing above, but un- 

 branched below the middle of the tube: petals white, not 

 deeply bifid, the lobes entire or minutely erose, but with no 

 prominent lateral tooth; appendages oblong, retuse: ovary 

 raised on a stipe, which is l 1 lines long. 



This species most nearly^resembW S. Grayi Watson (pi. 

 VI, figs. 7-8) but is distinguished by its lower habit, more 

 stipitate ovary, the shorter untoothed lobes of its petals and 

 the character of the calyx, since in S. Grayi the nerves of the 

 calyx do not anastomose with each other, but remain quite 

 distinct, as may be seen from fig. 7. Specimens of S. Suks- 

 dorfii have been sent to the Gray Herbarium from the foil 



M 



ow- 



eton: Mt 



Paddo (Adams), at 7,000-8, I feet altitude, collected by w'. 



