16 Rhodora [JANUARY 
9. P. arrorEs (Nutt.) Wats. & Coult. Fias. 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 0.4-3 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 Ist 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 mm. long, 
ovate, rather abruptly contracted to a blunt or subacute apex, not 
truncate, thin, hyaline above, 8 ail alae 5-nerved; the nerves 
pubescent below the middle: palea lanceolate, about equaling the 
lemma oe slightly longer, ciliate on on nerves chiefly of the upper » 
half; the lower cilia longer: anthers 0.6-0.7 mm. long: grain 
1-1 ow m. long.— Watson & Coulter in Gray, Man. ed. 6, 668 (1890); 
Britton & Brown, Ill. Fl. i. 215 (1896); Rydberg, FI. Col. 48 (1906); 
Coulter & Nelson, Man. Bot. Rocky Mts., 74 (1909); Wooton & 
Standley, Contri ib. U. S. Nat. Herb. xix. 104 (1915). P. Nuttaliana 
Hitche. in pt Fly Cat. pt: 3,162 B get Poa airoides Nutt. 
Gen. i. 68 (1818); Eaton, Man. ed. 5, 335 (1829). Poa Nuttalliana 
Schultes, Mant. ii. 303 (1824). Festuca (?) Nuttalliana Kunth, 
Gram. i. 129 (1829). Glyceria montana Buckley Abi Acad. Sci. 
Phila. 1862, 96 (1 ue G. airoides Gray, Poe. cad, Sci. Phila. 
ribn. ; ‘ 
pis airoides Holm, Bot. Gaz. xlvi. 427 (1908).— Widely distributed 
in the western and west-central sections of North America; adventive 
eastward to New England. Marne: around ie aby. North Ber- 
wick, June and July, 1897-1903, J.C. Parlin. Vermont: Canadian 
Pacific ilway yards, Newport, July 26, 1904, A. oa Eaton, no. 
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 that Buckley appropriated an unpublished 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‘alter the bibliographic fact that the name, wisely left unpublished 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. Fras. 54-58. Laxe caespitosa 1.5-7 dm. alta 
viridis; foliorum caulinorum laminis 4.6—12 em. longis involutis flacci- 
dis, vaginis basilaribus plus minusve purpurascentibus; ligula 1.7-2.5 
m. longa acuta; panicula diffusa 1-2.5 dm. longa, basi vagina supe- 
1See Gray, Proc: Acad. Sci. Phila., 1862, 336 (1863). 
