334 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Capsule short, ovoid or oblong, not curved, usually opening with 6 valves; styles 



usually 3 4. STELLARIA. 



Petals entire or shallowly notched, sometimes none; capsule with as many (entire 

 or 2-cleft) valves as styles. 

 Styles as many as the sepals and alternate with them; petals shorter than the 



sepals 5. SAGINA. 



Styles fewer than the sepals or, if of the same number, opposite them; petals usu- 

 ally much longer than the sepals. 

 Seeds with a small appendage; flowers mostly in the axils of the leaves; leaves 



oval or elliptic 6. MOEHRINGIA. 



Seeds not appendaged; flowers mostly in cymes; leaves usually linear. 



7. ARENARIA. 



1. LYCHNIS L. 



Annuals or perennials, with viscid pubescence; calyx often inflated, 10-nerved, 

 5-toothed; petals small or large; stamens 10. 



Petals much longer than the calyx; plants 0.6 to 1 meter high 1. L. alba. 



Petals not exserted from the calyx; plants 5 to 20 cm. high 2. L. apetala. 



1. Lychnis alba Mill. White campion. Scattered plants found in several places. 

 Native of Eur.; naturalized as a weed in N. Amer. — Plants stout, branched, very 

 viscid; leaves ovate to lance-oblong; petals white; calyx becoming very large in fruit. 



Several large plants grew in the flower beds at the Glacier Park Hotel in 1919, and 

 they were rather showy. The flowers open in the evening and close in the forenoon; 

 some of them are pistillate and others staminate. 



2. Lychnis apetala L. Bladder campion. Occasional above timber line on the 

 highest rock slides. Alaska to Utah, Colo.. Lab., and Greenl.; also in Eur. and Asia. 

 (Wahlbergella apetala Fries.) — Perennial, branched, finely hairy and \dscid; leaves 

 linear, 2 to 5 cm. long; flowers mostly solitary, long-stalked, nodding; calyx bladder- 

 like, purplish, 12 to 15 mm. long; petals very small. 



An uncommon but attractive little plant, whose inflated purple-striped calyces 



suggest Chinese lanterns. 



2. SILENE L. 



Perennials; leaves narrow; flowers solitary or in cymes; calyx \vith short lobes, 

 10-nerved; petals 5, with an appendage at the upper end of the claw; styles 3. 

 Plants almost stemless, rarely more than 5 cm. high; petals pink or purple; leaves 



5 to 15 mm. long 1, S. acaulis. 



Plants 15 to 40 cm. high; petals white or nearly so; leaves 30 to 80 mm. long. 



2. S. multicaulis. 



1. Silene acaulis L. Carpet pink. Common above timber line, in meadows or 

 on rock slides; rarely found on open slopes at middle altitudes. Alaska to Ariz., 

 N. H., and Greenl.; also in Eur. and Asia. — Plants forming very dense mats 10 to 60 

 cm. wide; leaves linear; flowers solitary on short erect stems; calyx 5 to 6 mm. long; 

 petals merely notched. 



A beautiful plant, the mats densely covered with the bright flowers. The flowers, 

 unfortunately, last only a short time. 



2. Silene multicaulis Nutt. Catchfly. Common at nearly all altitudes, in woods 

 or meadows or on open slopes or rock slides. B. C. to Oreg., Wyo., and Alta. — Stems 

 tufted, very sticky; leaves linear to oblanceolate; calyx 1.5 cm. long; petals 2 to 2.5 

 cm. long (including the claw), 2-lobed. 



The flowers are rather showy; they open in the evening and close in the forenoon. 

 Sometimes they are tinged with pink. 



