/". glabrum Gren. ct Godr.) and /'. intermedium DC. el Koch (/'. scabrum Gren. 

 el Godr.) 



On the other hand, some specimens may be very hairy, the leaves now and then with 

 a nearly canescent pubescence, or nearly felted in spots, while other parts in the same 

 plant are nearly or completely glabrous. The fruits in these specimens are completely 

 hoary, so as to give the whole fruit-bearing a silver-white appearance. These specimens 

 are referred by me to f. gemiinum Gren. et Godr. (/'. scabrum DG.) and /. vulgare 

 TuRCZAN. Intermediates between glabrate specimens and hairy ones are rather fre- 

 quent. There are also considerable variations in the length of the internodes, and in the 

 shape and size of the leaves. 



In natural meadows on islets in the Yenisei, near Ust Abakansk, I have collected, 

 at the beginning of June, young, as yet flowerless specimens of a very luxuriant and cha- 

 racteristic form, with stems 60 — 80 cm. high, and 4—5 mm. in diameter, with leaves 

 5 — 6 cm. long, and to 12 or 13 mm. broad. Thus, in the shape of the leaves, there are to 

 be found a great number of types, from the common, narrowly lanceolate one with a 

 broad base, tapering upwards and generally, slightly extended at the apex, through all 

 transitions, to specimens with narrowly elliptic leaves, subobtuse at the top. The typical 

 var. latifoliiim Turczan., especially characterized by broad, 5-nerved leaves, has not 

 been observed by me in the territory explored. Besides forms with the commonly rather 

 vigorous and erect stems, there occur specimens with somewhat relaxed and ascending 

 stems, and with more spreading or drooping pedicels. 



The flowering in this species did not appear to begin till the end of June. The 

 specimens I have collected in the course of June, are therefore destitute of flowers and 

 fruits, owing to which this material cannot be precisely determined. 



Very common in the territory explored, in southern Siberia as well as in the Urjan- 

 kai country, where I have collected it at Ust Algiac, Ust Sisti-kem, near the Kamsara, at 

 Ust Tara-kem, near Bjelosarsk, and on the Tapsa. 



Distribution: Northern and middle Europe, Caucasia, Turkestan, the Himalayas, 

 Siberia, in the Yenisei valley northwards to 70° 20' north lat, and eastwards to the 

 Tshuktsher Peninsula and Kamtchatka, northern Mongolia, Manchooria, China, Sakha- 

 lin, Japan, North America. 



Galium densiflorum Ledeb. Fl. Alt. I, p 137; Ledeb. Fl. Ross. II, p. 413; Kptiji. tkn. 

 Aj[t. Ill (1904) p. 561. 



f. leiocarpum nov. f. 



Ab forma typica diff'ert germinibus semper omniiio levibus vel subgranulosis, 

 nunquam villosis. Nodis leviler pilosis, caule ceterum glabro. Pediincidis quadrangii- 

 latis, glabris vel sparse hispidulis. Fructibus maturis fere 1 mm. diameirp omnino glabris, 

 interdum leviter granulosis, nunquam pilosis. 



The specimens occurring in my collections, differ in some respects from the descrip- 

 tion given by the author in Flora Altaica and Flora Rossica. They especially differ in 



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