164 
17. 5. orientalis Trin. 
N. 672. Pamir, on dry plains by Sary Mullah. Alt. 4100 m . July5. 1898. 
N. 1020. Pamir, on dry slopes by the lake Jashil Kul, frequent. 
Alt. 8800 m . Aug. 1. 1898. 
var. trichoglossa Hack. n. var. 
Differt a typo praesertim ligula brevi dense breviterque ciliata 
(in typo glabra). 
N. 404. Alai mountains, by Sufi Kurgan. Alt. 2400 m . June 18. 1898. 
N. 683. Pamir, on dry plains by Sary Mullah. Alt. 4100 m . July5. 1898. 
X. Aristida L. 
18. A. plumosa L. 
N. 2198. Persia, prov Gilan, in the mountains by Batshinar. Sept. 18. 
1899. 
19. A. pungens Desf. 
N. 1791. Buchara, in sandy desert by Chodsha Dawlet. June 10. 1899. 
20. A. pennata Trin. 
N. 235. Buchara, in sandy desert by Chodsha Dawlet. May 17. 1898. 
N. 1746. Transcaspia, in sandy desert by Barachané. June 2. 1899. 
XI. Oryzopsis Michaux. 
21. O. holciformis Hack. 
/?. songorica Hack. Urachne songorica Trin. 
N. 408. Alai mountains, by Sufi Kurgan. Alt. 2100 m . June 18. 1898. 
22. Oryzopsis purpurascens Hack. n. sp. 
Perennis, caespitosa. Culmi circ. 3 dm. alti, erecti, teretes, sim- 
plices, glaberrimi, superne breviter nudi. Yaginae superiores arctae, 
innovationum dilatatae, internodiis multo breviores, scaberulae. 
Ligula exserta (circ. 4 mm. longa), obtusa. Laminae lineares, siccando 
convolutae, acutae, 5—10 cm. longae, explicatae 2 mm. latae, glauces- 
centes, subtus scaberulae, supra puberulae, margine scabrae. Panicula 
pro magnitudine plantae spectabilis (18—26 cm. longa), ovato-oblonga, 
laxissima, patens, subinterrupta, rariflora, ramis plerumque binis 
(5—8 cm. longis) scaberulis maxima parte nudis, apice spiculas 
1—2 (rarissime piures) longiuscule pedicellatas (pedicello subtermi- 
nali spiculam aequante) gerentibus. Spiculae late lanceolatae, 8 mm. 
longae, basi virides, superne amoene purpureae; glumae steriles subae- 
