Nr. 3] SOME VASCULAR PLANTS FROM SAGHALIN 9 



whole of the cold and temperate zones of the norlhein hemisphere. 

 From Eastern Asia Trinius has described a species H. dahurica 

 or H. glabra, which is distinguished by the extreme shortness of 

 its stem, witli very few flowers in the panicle, considerably 

 smaller spikelets (as a rule 2.5—3.5 mm. long), very short glumes 

 with smooth, or at any rate only slightly dotted, pales save for 

 the margin, which is long haired, and with hairy sheath. 



Despite the differences observable between this Hierochloe in 

 its typical form for Eastern Asia and the typical European form, 

 of H. odorata, I must nevertheless agree with Komarov (Flora 

 iManshiiriae, Vol. I, Pag. 264) in classing it only as a special 

 form under H. odorata. With a large amount of material, it 

 has proved impossible to draw a sharp limit between them, as 

 I had occasion to convince myself of in dealing with the specimens 

 I have observed in Siberia. The Asiatic forms of this species 

 are on the whole distinguished from the European species by 

 possessing, to a greater or lesser degree, the very qualities which 

 mark H. dahurica as distinct from H. odorata, parlicularly in 

 having, on an average, the panicle less close, with the branches 

 more spread out. My Siberian material of this species, which I 

 collected in the Minusinsk district, presents, as a matter of faet, 

 distinct transition forms between the two, both as regards the 

 struclure of the single spikelets and in that of the panicle and 

 vegetative shoots. 



The fairly exlensive material of this species collected by Dr. 

 LuDV. MiJNSTERHJELM in Saghalin differs in several respects so 

 considerably from the usual forms, both European and Asiatic, 

 of the species, that I have considered it right to class it as a 

 special variety. Il is parlicularly characterised by its high, strong 

 growth, and in having all the leaves on the flowering stem with 

 fully developed lamina, as a rule 3 — 6 cm. long and 5 — 7 mm. 

 broad. The leaf-sheathes are round and grooved, closely beset 

 with long white downward pointing hairs. The leaves, both on 

 the barren and the flowering shoots, are very rough, the upper 

 as well as Ihe under side being furnished with shorl, sharp 

 spines, but no hairs. 



The panicle is short and broad, very rich, the branches short 

 and somewhat closed. The spikelets are very large. The glumes 

 are of equal lenglh, 5 — 7 mm., and always considerably (1 — 2 

 mm.) longer than the Horets. They are gradually tapering towards 

 the apex and as a rule here somewhat recurvate, membraneous, 

 of a fine shinning silvery grey colour with distinct green base; 

 Ihey are furnished with one marked median vein, which disappears 

 gradually towards the top, and two shorter lateral veins. The 

 pales are smooth, save for the margin and the point of the per- 



