PAPAVERACE^ 67 



Berheris cetnensis Roem. et Schult. 



A smaller shrub, much branched and usually decumbent. Leaves 

 ovate-oblong, stiff, very finely serrated at the edge. Thorns very 

 strong, often longer than the leaves. Flowers in short clusters. 

 Berries bluish black when ripe. 



Distribution.' — -Mountains of Corsica, Sardinia, and Sicily, flower- 

 ing in May and June. 



NYMPHiEACE^ 



Flowers, regular. Stamens numerous. Stigma sessile on the 

 many-celled ovary. A small family of aquatic plants, with large 

 handsome flowers and floating leaves. About 35 species growing 

 in the waters of almost the whole globe. 



Castalia alba (White Water-lily) and NymphcBa lutea, the Yellow 

 Water-lily, are found in|lakes and ponds in the lowlands of Switzer- 

 land, etc., and Nymphcea pumila Hoffm. is much less common in 

 mountain lakes in Switzerland, Tyrol, Carinthia, and the Vosges. 

 It is smaller than the Common Yellow Water-lily, with much 

 smaller flowers, unguiculate petals, and oblong, slightly peltate 

 leaves. 



PAPAVERACEiE 



Herbs with alternate leaves and mUky juice. Flowers regular, 

 usually of 4 petals. Sepals usually 2. Stamens indefinite. Ovules 

 parietal. A family represented in the Alps and sub-Alps by very 

 few species. 



Papaver alpinum L. Alpine Poppy. 



Root tapering, with prostrate, scaly branches and loosely tufted. 

 Stem erect, simple, leafless, i-flowered, hispid, like the whole plant. 

 Leaves aU radical, stalked, doubly pinnate. Segments linear 

 lanceolate or wedge-shaped, entire. Flowers white with yellow 

 centre, or yellow or orange when on granite soil. Stamens subulate. 

 Capsules obovate, with stiff adpressed hairs. 



Principally on limestone, or on granitic ddbris of the high^Alps 

 (5500-9000 feet), and sometimes descending into the valleys and 

 beds of streams. June to August. 



Distribution. — Eastern, Central, and Western Alps ; Carpathians, 

 Balkans, Apennines ; high mountains of Europe from Spain to 

 Norway ; Northern and Central Asia. 



In Switzerland it is represented by two sub-species : P. Burseri 

 Crantz, a glabrous form found in the Alps of Gruyere, Chateau 

 d'Oex, etc. ; and P. Sendtneri Kemer, a hairy form with less cut 

 leaves, which also grows above Chateau d'Oex and on Pilatus, etc. 



The Arctic or Iceland Poppy (P. nudicaulis) is very similar to 



