1912] Hubbard,— Nomenclatorial Changes in Gramineae — 187 
St. Petersb., ser. 6, 4 pt. 2 (Gram. Suppl.) 58 (1836); Gray Man. 
593 (1848); Watson & Coulter in ed. 6, 667 (1890). Panicularia 
elongata (Torr.) Ktze. Rev. Gen. 2 : 783 (1891). Glyceria Torreyana 
(Spreng.) Hitche. RHopora 8 : 211 (1906); Hitche. in Gray Man. ed. 
7, 158 (1908). Panicularia melicaria (Michx.) Hitche. Contr. Nat. 
Herb. 12 : 149 (1908). 
Hystrix Moench. 
Unfortunately the generic name was changed from Asprella Willd. 
of the sixth edition of the Manual to Hystrix Moench in the seventh. 
While Willdenow was not the oldest authority for the name Asprella 
or Asperella, as it should be spelled, his genus stood for the same plants 
as the older Asperella Humb. in Roem. & Usteri Mag. 7:5 (1791). 
According to the American Code Asperella Humb. is invalidated by 
the older Asprella Schreb. in L. Gen. Pl. ed. 8, 1 :45 (1789).  Asprella 
Schreb., however, equals Homalocenchrus Mieg. in Act. Helv. Phys- 
Math. 4 : 307 (1760) which in turn is a synonym of Leersia Sw. Prodr. 
21 (1788). Leersia Sw. is one of Harms' list of nomina conservanda. 
Consequently Asprella Schreb. does not invalidate Asperella Hubm. 
(Sect. 7, Art. 50 of the “ Vienna Code."). 
Humboldt goes into a lengthy discussion of Elymus hystria L. Syst. 
Pl. ed. Reich. 1 : 234 (1779) which is the same as E. hystrix L. Sp. Pl. 
560 (1753) and points out wherein this species differs from the genus 
Elymus L. He forms his genus correctly and gives a species A. hystrix 
basing it on Elymus hystrix L. Syst. Pl. ed. Reich. 1:234 (1779). 
Furthermore he refers to the older Asprella Schreb. and states that 
Schreber informs him that his (Schreber's) genus is a synonym of 
Homalocenchrus Mieg. 
ASPERELLA Humb. in Roem. & Usteri Mag. 7 : 5 (1790) not Schreb. 
l. e. (1789). Hystrix Moench Meth. 294 (1794); Hitchc. in Gray 
Man. ed. 7, 170 (1908).  Asprella Willd. Enum. Pl. Hort. Berol. 132 
(1809); Watson & Coulter in Gray Man. ed. 6, 674 (1890). Gym- 
nostichum Schreb. Beschr. Gris. 3 : 127, t. 47 (1810); Gray Man. ed. 
2, 571 (1856); ed. 5, 639 (1867). Elymus §Gymnostichum Gray 
Man. 604 (1848). ? Stenostachys Turcz. in Bull. Soc. Natural. Mosc. 
35 pt. 2, 330 (1862). 
ASPERELLA HYSTRIX (L. Humb. in Roem & Usteri Mag. 7:5 
(1790). Synonymy in part: Elymus hystrix L. Sp. Pl. 560 (1753); 
