Planche 4. 



Plantes de la region nlvale. 



Compares au bas du texte de la planche 5. 



Fig. t. Silene & courte tige. Voisine des 

 ceillets, formant des toufies souvent enormes, 

 couvertes de fleurs. 



Sur les paturages et cretes rocheuses et 

 dans les pentes pierreuses, de 1800 a 3600 m. 



Fig. 2. Silene sans tige se distingue du 

 precedent par ses toutfes encore plus serrees, 

 par un calice retreci a la pedicelle et non 

 arondie a la base, par la capsule depassant a 

 peine le calice. 



Paturages, humus, cretes, eboulis de 1800 a 

 3GOO m manque au Nord et fuit le calcaire. 



Fig. 3. Androsace helvetique. Formant des 

 touffes tr&s compactes, de forme hemispherique 

 ou presque globuleuse, parseinees de fleurs 

 blanches. Dans les fentes des rochers cal- 

 caires, de 2100 a 3000 m. 



Fig. 4. Androsace des glaciers. Toufies 

 peu serrees; les feuilles veloutees de poils trs 

 courts; fleurs rougeatres. 



Sur les cretes et les cimes des roches pri- 

 mitives, de 2000 a 4000 m. 



Fig. 6. Androsace imbriqu6e. Ressemble 

 au No. 3, mais les feuilles sont couvertes de 

 poils etoiles et les fleurs sont rouges au centre 

 au lieu d'etre jaunes. 



Alpes valaisannes (chaine sud), jusqu'a 

 3000m, Balme, Alpes de Saas et de Zermatt, 

 Simplon, au glacier inferieur de 1'Aar. 



Fig. 6. Petrocalle des Pyrenees. Petite 

 Crucifere a fleurs lilas facilement reconnais- 

 sable a ses petites feuilles trifides, a ses fleurs 

 composees de 4 petales en croiz et a ses sili- 

 cules aplaties. 



Dissemin6e ca et la dans les eboulis, les 

 aretes, les parois rocheuses des Alpes calcaires. 

 De 2000 a 3000m env. 



Fig. 7. Drave de Zahlbruckner. Feuilles 

 a bord cilie-pectine de longues soies; fleurs 

 presentant 4 petales en croix (Crucifere). Se 

 rapproche beaucoup du Draba aizo'ides (Planche 16, 

 Fig. 5), mais s'en distingue par un style plus court, 

 n'atteignant pas la 1 j z de la largeur de la silicule. 



Pas frequente; particulierement dans les 

 Grisons et le Valais, de 2000 a 3300m. 



Fig. 8 Hutchinsie bre"vicaule. Petite 

 Crucif&re pourvue d'elegantes petites feuilles 

 pennatifides et de silicules arrondies. Res- 

 semble a PHutchinsia alpina (Planche 16, 

 Fig. 2) dont elle se distingue par son port plus 

 ramasse, ses grapes fructiffcres ^lus courtes et 

 1'absence de style. Les petales sont retre- 

 cits en forme de coin (chez II. alpine Us sont 

 brusqement retrecits en onglet). De 2400 a 

 3300 m dans les Grisons et le Valais. 



Fig. 9. Eritriche naine. Feuilles grisatres 

 recouvertes de longs poila. Corolle d'un bleu 

 admirablement pur et brillant. 



Plante typique de la region nivale, ne des- 

 cendant pas au-dessous de la limite des neiges 

 eternelles; se trouve surtout BUT les roches 

 siliceuses, de 2GOO a 3600 m. 



Fig. 10. Cherlerie faux Orpin. Petite plante 

 de la famille des Alsinees, formant d'epais 

 coussins; fleurs petites, verdatres, le plus sou- 

 vent depourvues de petales. 



Generalement repandu sur les paturages, 

 les aretes rocheuses et les eboulis, de 1800 ft 

 3800 m env. 



Fig. 11. Sabline cilige. Petite plante de 

 la famille des Alsinees. La Fig. 11 repre- 

 sente une forme ramassee des hautes stations, 

 la variete rnulticaulis Wulf. Frequente dans 

 les endroits rocheux, les eboulis et les patu- 

 rages; de 1500 a 3300 m env. 



Plate 4. 

 Cushion Alpine plants. 



Fig. 1. Dwarf-Silene, Moss Campion. Male 

 specimen. Forms thick cushions that often 

 attain a foot In diameter covered with flowers. 

 (Occasionally with white flowers.) 



Fig. 2. Cushion-Silene. Differing from the 

 preceding species in its mosslike mode of 

 growth in compact cushions. The capsule 

 hardly projects beyond the calyx (in Silene 

 acaulis it is nearly double as long as the calxy). 



Pastures, aretes, slopes of debris from 

 18003600 m. Is absent in the North and does 

 not grow on chalky soil. 



Fig. 3. Swiss Androsace. Forms thick, 

 closely-packed, usually hemispherical cushions, 

 close to which are the white flowers. 



In the rocky clefts of aretes and on the 

 summits of the calcareous mountains from 2100 

 to 3000 m. 



Fig. 4. Glacier Androsace. Forms loose 

 cushions; the leaves velvety by reason of short 

 hairs. On aretes and summits of the primary 

 formation from 20004000 m. 



Fig. 5. Imbricated Androsace. Like No. 3, 

 but the leaves cevered with starlike hairs and 

 the middle of the flowers red not yellow. 



On the southern Alps of the Valais up to 

 3000 m. 



Fig. 6. Pyrenean Petrocallis. Belongs to 

 the Crucifers and is easily known by its trifid 

 leaves, its four-membered flowers and its 

 compressed seedvessel. 



On slopes of debris, aretes,, rocky ledges of 

 the calcareous Alps (Sentis-district, Fluhbrig in 

 the WSggithal, Fronalp near Brunnen, Pilatus etc. 

 to 3400 m. 



Fig. 7. Zahlbruckner's Draba. The small 

 leaves are fringed on the margin with stiff hairs. 

 Distinguished from the closely allied Draba 

 alzoides (Plate 16, Fig. 6) by the shorter style; 

 the latter is not half as long as the breadth 

 of the seedvessels. 



Not common, but is found In the Grisons 

 and in the Valais from 20003300 m. 



Fig. 8. Short-stalked Hutchinsia. A Crucifer 

 with small, pretty pinnate leaves and round 

 seedvessels. Distinguished from the similar 

 Hutchinsia alpina (Plate 22, Fig. 3) by its more 

 compact growth, its shorter raceme of seed- 

 vessels the absence of a style, its petals being 

 narrowed, wedgelike (in "alpina" they are sud- 

 denly contracted at the base). 



From 24003300 m in the Alps of the 

 Valais and the Grisons. 



Fig. 9. Alpine forget-me-not. Leaves shimme- 

 ring grey from long hairs. Flower of the 

 purest, most brillant blue. 



Typical snowplant; only in the snowregion, 

 espec. on crests of mountains and on the higher 

 summits of the primary formation, from 2600 

 to 3600 m. 



Fig. 10. Sedum like Cherleria. Forms dense 

 mosslike cushions; flowers small, greenish, 

 generally without petals, belongs to the pinks. 

 (Caryophyllacese). Widely spread on grass, 

 rocky ridges, slopes of debris, from about 1800 

 to 3800 m. 



Fig. 11. Hairy Sand-wort. Belongs to the 

 pinks; the short oviform leaves are narrowed 

 into a hairy leafstalk. The compact form of 

 higher habitats here illustrated is the variety 

 multicaulis Wulf. (many stalked). Common 

 on rocky places, among detritus, and in pasture* 

 from about 16002000 m. 



