PRIMULA CONFERENCE. 



157 



Group Sertulum. 



Three species with oblong or spathulate leaves, bracts not swollen 

 at the base, and a small open campanulate calyx, seem to have affinity 

 —P. sertulum, Franch., from Tatsienlu ; P. pumilio, Maxim., a minute 

 alpine from Kansu ; and P. Knuthiana, Pax, which has come into 

 cultivation in course of the last two or three years, by whom introduced 

 I do not know. 



Chinese Species of the Sertulum Group. 

 P. Knuthiana, Pax (fig. 61) P. pumilio, Maxim. 



P. sertulum, Franch. 



Group Glacialis. 



The three species I have to name here are beautiful alpines with 

 oblong or spathulate rosulate thick leaves and large deeply coloured 

 flowers both in calyx and corolla. P. glacialis, Franch., is a plant of 

 the Lichiang Glacier. P. zambalensis, Petitm., comes from a high 

 altitude on the hills farther north at Batang and Dzambala. P. yar- 

 gongensis, Petitm., which I have not seen, comes from the same place 

 as the last named and is its near ally. Collectors who read this will 

 please look out for these plants. 



Chinese Species of the Glacialis Group. 

 P. glacialis, Franch. P. yargongensis, Petitm. 



P. zambalensis, Petitm. 



Group Tongolensis. 



P. tongolensis, Franch., and P. sinuata, Franch., are species with 

 large flowers, the corolla-tube an inch long, and their spathulate or 

 oblong and toothed leaves have a cartilaginous margin. The flowers 

 are either solitary or two to three in an umbel, and the calyx — bright 

 green — has somewhat overlapping lobes. These plants come, the first 

 from Tungngolo near Tatsiculu, the other from the region of Tali. 

 Both ought to be in cultivation. P. tongolensis, Franch., has no 

 near kinship with the Soldanelloides, amongst which Pax places it. 



Chinese Species of the Tongolensis Group. 

 P. sinuata, Franch. 

 P. tongolensis, Franch. 



Group Souliei. 



Two species with petiolate leaves — the toothed broad lamina 

 abruptly passing into the petiole — and flower showing more or less 

 the calyx of the Auriculata section are P. Souliei, Franch., and P. 

 urticifolia, Maxim. The former is said to have blue flowers, and comes 

 from the province of Kiala, in the north of Szechwan ; the latter is a 

 small plant of Kansu. Neither is in cultivation. The species P. 

 flava, Maxim., from Kansu, is one of the few Chinese species of which 



