16 Rhodora [January 



9. P. airoides (Xutt.) Wats. & Coult. Figs. 44-48. Caespitose, 

 green or slightly glaucous; the culms slender, 2-9 dm. high: cauline 

 leaves flat or becoming involute, 1-2 mm. wide, 2-12 cm. long: pan- 

 icle 0.-1 3 dm. long, from narrow and close to broad and open, the 

 branches and pedicels strongly scabrous; the lower branches (up 

 to 1.2 dm. long) ascending to spreading: spikelets 3.5-7 mm. long, 

 3-6-flowered: glumes thick, erose-ciliolate; the 1st 1.2-1.5 mm. 

 long, narrowly ovate, acutish, 1 -nerved; the 2d 1.5-2 mm. long, 

 3-nerved, broadly ovate, obtuse or subacute: lemmas 1.5-2 nun. long, 

 ovate, rather abruptly contracted to a blunt or subacute apex, not 

 truncate, thin, hyaline above, erose-scrrulate, 5-ncrved; the nerves 

 pubescent below the middle: palea lanceolate, about equaling the 

 lemma or slightly longer, ciliatc on the nerves chiefly of the upper 

 half; the lower cilia longer: anthers 0.0-0.7 mm. long: grain 

 1 1.2 mm. long.— Watson & Coulter in Gray, Man. ed. 0, 668 (1890); 

 Britton & Brown, 111. Fl. i. 215 (1896); Rydberg, Fl. Col. 48 (1906); 

 Coulter & Nelson, Man. Bot. Rocky Mts., 74 (1909); Wooton & 

 Standley, Contrib. V. S. Nat. Herb. xix. 104 (1915). P. NuttaUiana 

 Ilitchc. in Jepson, Fl. Cal. pt, 3, 162 (1912). Poa airoides Nutt. 

 Gen. i. OS (1818); Eaton, Man. ed. 5, 335 (1829). Poa NuttaUiana 

 Sehultes, Mant. ii. 303 (1824). Fcsiuca (?) NuttaUiana Kunth, 

 Gram. i. 129 (1829). Olyeeria Montana Buckley, Proc. Acad. Sci. 

 Phila. 1802, 90 (1803). 6\ airoides Grav, Proc. Acad. Sci. Phila. 

 1S02, 330 (1863). 0. distant Torr. Hot. Wilkes Exped. 490 (1874); 

 Coulter, Man. Bot. Rocky Mts. 423 (1885); not Wahlenb. Panicu- 

 laria distant airoides Scribn. Mem. Torr. Bot. CI. v. 54 (1894). Atro- 

 pis airoides Holm, Hot. Gaz. xlvi. 427 (1908). — Widely distributed 

 in the western and west-central sections of North America; adventive 

 eastward to New England. Maine: around wool-waste, North Ber- 

 wick, June and July, 1897-1903, ./. C. ParJin. Vermont: Canadian 

 Pacific Railway yards, Newport, July 20, 1904, J. .1. Eaton, no. 

 M220. 



The synonym Glyceria montana is here ascribed to Buckley as author, 

 although it is well known ' that Buckley appropriated an unpublished 

 herbarium-name of Nuttall's. This historical fact does not, of course, 

 alter the bibliographic fact that the name, wisely left unpublished 

 by Nuttall, was actually published by Buckley and as a published name 

 should consequently be cited from his publication and not as of 

 Nuttall. 



10. P. lucida, n. sp. Figs. 54-58. Laxe caespitosa 1.5 7 dm. alta 

 viridis; foliorum caulinorum laminis 4.6-12 cm. longis involutes flacci- 



dis, vaginis basilaribus plus minusve purpurascentibus; ligula 1.7-2.5 

 mm. longa acuta; panicula diffusa 1-2.5 dm. longa, basi vagina supe- 



1 See Gray, Proc. Acad. Sci. Phila., 1862, 336 (1863). 



