56 CARYOPHYLLE^. [SiLENE. 



5. S. acau'lis, L. ; densely tnfted, leaves small linear- subulate close 

 set, flowers usually dioecious shortly peduncled solitary erect, calyx tubular 

 teeth obtuse, petals and scales notched. Moss Campion. 



Alpine rocks; ascends to 4,300 ft. ; Donegal only in Ireland; fl. June-Aug. 

 Perennial, glabrous, forming bright green, moss-like cushions. Leaves %-% 

 in., channelled above, keeled below, ciliate. Flowers pink, rarely white, 

 f in. diam., peduncles lengthening after flowering. Calyx faintly nerved ; 

 teeth with scarious margins. Capsule exserted, subsylindric, 6-toothed. 

 DISTRIB. Alps of Europe, N. Asia, N. America ; all Arctic regions. 



6. S. Oti'tes, L. ; flowering stems erect simple few-leaved viscid, 

 radical leaves narrow-spathulate, cymes panicled, flowers small sub- 

 dioecious erect whoiied, calyx teeth obtuse, petals linear without scales. 

 Sandy fields and roadsides of the E. Counties, local ; fl. June- Aug. Eootstock 



woody, branched. Stem 1-3 ft. Radical leaves |-3 in., many, slender, 

 puberulous. Panicle narrow, interrupted, flowers $ in. diam., many, sub- 

 erect., pale yellow-green ; bracts membranous. Calyx obovoid, membranous. 

 Petals entire. Stamens and styles much exserted. Capsule ovoid, rupturing 

 the calyx. DISTRIB. Europe, Siberia, W. Asia to Persia. 



7. S. nu tans, L. ; pubescent, stem above and calyx viscid, radical 

 Iraves oblong-lanceolate, cauline linear, flowers in panicled or subracemed 

 cymes drooping, calyx teeth acute, petals 2-partite, scales lanceolate. S. 

 paradoxa, Sm., not L. Nottingham Catchfly. 



Dry places and walls, fromrForfar southd., local ; Channel Islands ; fl. May- 

 July. Rootstock woody, branched. Stems 2-3 ft. Radical leaves 2-5 in., 

 tufted, petioled ; cauline small, narrow, sessile. Flowers dimorphic, honey- 

 less, proterandous, opening and fragrant for 3 nights, 5 stamens ripening 

 on each of the two first nights, the styles protruding on the third. Calyx 

 in., tubular, swollen in the middle, membranous, nerves purple. Petals 

 white or pink ; segments diverging, narrow, incurved. Capsule erect, 

 exceeding and rupturing the calyx. DISTRIB. Europe (Arctic), Siberia, 

 Dahuria, Canaries. 



**** Calyx cylindric or ovoid, IQ-nerved. Capsule without septa* 



8. S. noctiflo'ra, L. ; softly pubescent, viscid above, leaves all oblong- 

 lanceolate acute the lower petioled, flowers few, calyx-tube long, teeth 

 slender, petals 2-fid, scales truncate. 



Sandy fields, on the E. chiefly ; Forfar to Cornwall ; Ireland ; Channel Islands ; 

 a colonist ; fl. July-Aug. Annual, 1-2 ft., erect, simple or dichotomons. 

 Leaves 3-4 in., ^ 1J in. broad. Flowers erect, open at night, fragrant. 

 Calyx 1 in., narrow in flower ; nerves green. Petals rosy within, yellow 

 outside, segments incurved by day. Capsule as long as, and often ruptur- 

 ing, the calyx. DISTRIB. Europe. Siberia, W. Asia ; introd. in U. States. 

 Regarded by A. de Candolle as a Siberian and Caucasian plant of very 

 ancient naturalization in W. Europe. 



3. LYCH'NIS, L. CAMPION. 



Characters of SiUnc, but styles 5. Sepals not foliaceous. Petals with 

 a simple or 2-fid scale at the base of the blade. Styles and carpels opposite 



