-Primulas of Petiolaris-Sonchifolia Si-xtion. 



KEY TO THE SPECIES. 



Id the following key it must be noted that the true P. nana 

 is omitted. This omission has been necessitated by the scanty 

 material available of this species. As explained above, Wallich's 

 P. nana is very closely allied to the well-known P. Winteri. 



Leaves not fully developed when flowers open, i.e. flowers and leaves 

 coetaneous or approximately so. 

 Leaves glandular pubescent on both surfaces, margin usually rather 

 deeply toothed, sometimes lobulate ; scape developed though 

 sometimes very short, pedicels and calyx glandular-pilose ; calyx 

 lobes subequal to or shorter than the tube, usually 3-toothed, 

 sometimes irregularly toothed ; corolla lobes usually sharply 

 3-lobed ; efarinose plant, 2.5-6 cm. high . . .3. taliensis. 

 Leaves glabrous or \ pillae; farinose or not. 



Flowers white, comparatively small, quite immersed in the rosette 

 of leaves or just overtopping the leaves, appearing as if quite 

 sessile ; base of plant closely invested by imbricate scales and 

 sheathing leaf-bases. 

 Calyx not markedly veined, its lobes more or less deltoid, not 



high and 1-3 cm. diameter . . . . I. Honker i. 



Calyx markedly veined, its lobes rounded, strongly imbricate ; 



whole plant at flowering time 2.5-7 cm - diameter. 2. vcrnicosa. 

 Flowers not immersed in the leaves but with distinct pedicels ; 



scape present or not. 

 Calyx lobes shorter than the tube, corolla tube annulate. 



Leaves oblanceolate, deeply lobulate, the lobules incised- 

 dentate, scape shorter than the leaves ; otherwise very 

 similar to P. sonchifolia 4. taraxacoides. 



Leaves broadly oblanceolate or more often oblong to elliptic, 

 shallowly lobulate, the lobules dentate : scape at flowering 

 time subequal to or longer than the expanding leaves, 

 usually many-flowered ; pedicels 6-20 mm. long ; outer 

 bracts 3-5 mm. long, broad at base ; corolla blue or white, 

 the lobes usually more or less fringed ; closely imbricating, 

 rigid bud scales persistent at flowering ; sulphur farina. 

 nearly always present .... 5. sonchifolia. 



Calyx lobes subequal to or longer than the tube. 



Calyx lobes- oblong, trilobed or rarely 4-5 lobed at the apex ; 

 scape at flowering time much shorter than the leaves, many- 

 flowered ; bracts narrow, about 1.5 cm. long ; pedicels 

 about 3-3.5 cm. long ; corolla annulate, the lobes more or 

 less dentate ; scales at base as in P. sonchifolia ; farina 



Calyx lobes acute or acuminate, only casually few-lobed or 

 toothed. 

 Corolla lobes regularly toothed or sinuate-toothed along the 

 margin; bud scales p time; leaves 



glaucous like pedicels and calyx with pale farina, during 

 flowering spathulate or obovate-spathulate nan owed into 

 a winged petiole, succeeded by larger leaves long petioled 

 and truncate or cordate at the base, in the centre of which 



