Hierodiloe odorata (L.) Wahlenb. Fl. Ups. (1820) p. 32; Poa-CBimi,, 3.Tai;ii II-m> (fo;;- 

 'iom;o. <IJ.T. A;ii:iT. P.icciii VI (1914) p. 103; Kjimj. <Im. A.it. VII (1914) p. 1552. Hierochloc 

 borcalis Room. ct. Schult. Syst. Veget. II (1817) p. 513; Ledeb. Fl. All. I. p. 92; Tiir- 

 czan. Cat. Baical. no. 1289; Karel. ct Kiril. Enum. PL Fl. Alt. no. 913; Ledeb. Fl. 

 Ross. IV. p. 407: Turezan. Fl. Baical.-Dalmr. (1856, I) p. 9. no. 1287. [Tab. 11, Fig. 2]. 



The specimens belonging to 

 this one, gathered by me in 

 South Siberia, constitute, in 

 many respects, an intermediate 

 form Ijetween the typical spe- 

 cies Hierochloc odorata (L.) 

 Wahlenb. and Hierochloc da- 

 hnrica Trim. Ihe culms are 

 rather short, from 20 to 30 cm. 

 high, slender, and glabrous. The 

 leaves of the fertile shoots are 

 from 1 to 2cm. long, the sheaths 

 rifled and very hairy (f. pubes- 

 cens). The barren shoots have 

 leaves, generally rising above 

 the panicle. The leaves are 

 smooth, the margins only being 

 somewhat scabrous. The panic- 

 le is short, lax, open, and broad, 

 nearly ovate, the spikelets 

 rather numerous, and the bran- 

 ches of the panicle straightly 

 spreading. The spikelets are 

 small, oblong, or neaily circu- 

 lar, from 2,5 to 4 mm. long. The 

 glumes are broad, of unequal 

 length, one of them general!}' only half enclosing the florets, the other one generally 

 only slightly shorter than the florets, never projecting Ijeyond them, membranous, with 

 a green base, and generally furnished with one dorsal nerve only, lateral nerves wan- 

 ting. At the summit more or less obtuse, never drawn out or pointed. 1 he pales are of 

 a shining browu, glabrous, or rarely sparingly pubescent but much fringed with long 

 hairs. 



All the florets of the spikelet attain the same height. In point of the structure of 

 the spikelets these specimens agree best with Hierochloc dahiirica Trin. but, according to 

 their considerable height, their numerous spikelets, and spreading panicle more parti- 

 cularly with Hierochloc odorata. Upon a rather large material, H. odorata and H. 



Fig. 72. Hicrocliloc odorata (\.) \V.\iilenb. C'l) 



a. Spikelet. — b. Spil;elet, tlie glumes are removed and llie 



florets distended. — c. Emplj' glumes. 



lis 



