Craib — Primulas of Petiolaris-Sonchifolia Section. 265 



In the others these petioled leaves are wanting at flowering time 

 or only casually present. P. deuteronana, the only species of 

 the section with the corolla tube villous inside, is easily recog- 

 nised by that character, as also by its rather thick, more or less 

 bullate leaves which dry a pale green. P. sessilis has long, often 

 aristate-acuminate, calyx lobes, and the corolla lobes are nearly 

 always caudate-acuminate. P. gracilipes can be distinguished 

 from P. Scullyi by its green, not brown, calyx, its narrower 

 leaves and longer pedicels. 



6. In P. irregularis and P. scapigera from West Sikkim, P. 

 Boothii from Bhutan, P. bracteosa from Bhutan and East Sikkim, 

 and P. moupinensis from China, we have a set of plants closely 

 allied to the last, but usually much larger, and with a scape more 

 or less conspicuous at flowering time, and quite elongate in fruit. 

 The leaves in fruit are characterised by some being long petioled 

 and often cordate or truncate at the base. The depressed glo- 

 bose capsule is included in the calyx, and is shorter than the 

 calyx tube or subequal to it. Of these P. irregularis with its 

 oblong calyx lobes, variable at the apex, and its dense coating 

 of stalked capitate glands on the pedicels and on the outside of 

 the calyx is very distinct. P. Boothii, of which Griffith * gives 

 an excellent figure, has the scape rather short or scarcely de- 

 veloped, and is distinguished from P. scapigera by the regular 

 toothing of the corolla lobes and by the corolla in bud being 

 farinose. P. bracteosa, at least in fruit, has some of the inner 

 bracts expanded into well-developed petioled leaves. 



7. The last group includes only Chinese representatives— 

 P. odontocalyx and P. hupehensis. So far as habit is concerned, 

 they might be reckoned intermediate between the last two -roups. 

 In size they belong to the sessilis alliance, but here a distinct 

 scape is found. Again, in the lobing of the corolla lobes they 

 resemble P. sulphur ea and its allies. A distinct annulus is de- 

 veloped at the top of the tube. No fruiting specimens have 

 been seen of either species. From the photographs examined, 

 and also from the available specimens, the writer is strongly of 

 opinion that Farges' collection, which is the type of P. odonto- 

 calyx, consists of two species. In the key and enumeration the 

 species is limited to the specimens collected by Faber, which 

 agree with Wilson, 1831, in the shallowly denticulate leaves and 

 obconical calyx, whose lobes show almost constantly the char- 

 acter on which Franchet founded his specific name. The other 

 specimens collected by Farges, probably identical with the plant 

 collected by Henry and named P. hupehensis, can be easily dis- 

 tinguished by the erose-denticulate leaves and nearly cylindrical 



» Griffith, Ic. Pi. As., vol. iv, t. 485, fig. 2. 



