PINK FAMILY 47 



1. Flowers 2-3 cm. wide, in a dense cluster; calyx 



t.ubular S. officinalis 



?. Flowers about 1.5 cm. wide, on slender stalks; 



calyx becoming 5-angled and inflated in fruit S. vaccdria 



Silene Linne 1753 Catciiflv, Campion 



(Probably from Gr. sialos, saliva, from the sticky stems) 



PI. 8, fig. 6; PI. 9, fig. 1. 



Sepals 5, united into a tube, petals 5, white or pink, yellowish or pur- 

 plish, the lower part narrow and claw-like, stamens 10, ovary 1-celled, or 

 somewhat 2-4-celled, styles 3, rarely 4, fruit opening by 6- or 3 apical teeth ; 

 flowers solitary or clustered; leaves opposite, simple, entire; annual or 

 perennial. 



1. Stemless alpine mat plants; flowers pink S.acaiiUs 



2. Leafy-stemmed ; flowers white to purplish or 



pink 



a. Calyx swollen and bladdery; weed S. vulgaris 



b. Calyx not swollen and bladdery 



(1) Annual weeds 



(a) Stems sticky-hairy; flowers white, 



night-blooming, fragrant S.noctiflora 



(b) Stems smooth, the upper joints sticky; 



flowers pink, day-blooming S. antirrhina 



(2) Perennials, natives 



(a) Flowers in spreading forked clusters; 



leaves broad, thin S. Menziesii 



(b) Flowers in a long narrow cluster; leaves 



narrow, thick S. Scouleri 



Spergularia Persoon 1805 Sand Spurrv 

 (Lat. spergo, to scatter; spergula, a little weed) 



(Tissa Adanson) 



Sepals 5, separate, petals 5 to none, white to purplish or lilac, entire, 

 stamens 10, or fewer, ovary 1-celled, styles 3, capsule opening by 3 valves; 

 flowers solitary or clustered; leaves linear, opposite and entire; annual or 

 perennial. 



Flowers violet, solitary ; low branching annual S. sparsiflora 



