474 PROCEEDINGS OF THE AMERICAN ACADEMY. 
July 12, 1893 (no. 165), Foxcroft, June 25, 1894, Dover, June 28, 
1894, Orono, July 6, 1891,—all coll. MZ L. Fernald ; Sangerville, 
July 17, 1896 (G. B. Fernald, no. 176): New Hampsuire, between 
Marshfield and Fabyans, July 6, 1878, Bethlehem, June 20, 1887 (E#. $ 
C. E. Faxon); Whitefield, July 3, 1896 (W. Deane): VERMONT, St. 
Johnsbury, June 21, 1901 (7. #. Hazen, no. 206). Resembling north- 
western forms of the polymorphous festiva group, but not satisfactorily 
referable to any of them. 
2. Leaves 0.5 to 2 mm. wide: culms 3 to 7 dm. high: spikelets remote or at 
least distinct in a moniliform or linear-cylindric spike. 
11. C. straminea, Willd. — Figs. 28, 29. — Culms very slender, 
smooth except at summit: spikelets 3 to 8, yellow-brown, or rarely green, 
ovoid or subglobose, 4 to 8 mm. long, usually forming flecuous spikes : 
perigynia with ascending inconspicuous tips ; the inner faces 3- to 5-nerved 
or nerveless. — Willd. in Schkuhr, Riedgr. 49, t. G, fig. 34; Bailey, 
Mem. Torr. Cl. i. 21, & in Gray, Man. ed. 6, 621; Britton, 1. ¢. fig. 
868; Howe, |. c. 44. C. straminea, var. minor, Dewey, Am. Jour. 
Sci. xi. 318, t. N, fig. 45; Torr. 1. ¢. 395. C. festucacea, var. tenera, 
Carey, 1. c. 545. ©. straminea, var. tenera, Boott, 1. c. 120, t. 384 
(except perigynia from Olney) ; Gray, Man. ed. 5, 580; Macoun, l. ¢. 
132. — Meadows, or occasionally on dry banks or in open woods, NEW 
EneLanp to British Cotumpra, Kentucky and ARKANSAS. June- 
Aug. 
Var. echinodes. — Fig. 30. — Tips of the slightly longer perigynia 
divergent and conspicuous. — Ontario, Wyoming, June 24, 1901 (Vv. 
Macoun, Herb. Geol. Surv. Can., no. 26,624): Micurean, Detroit, 
July 20, 1867 (H. P. Sartwell), June 26, 1870, and June 22, 1873 
(Wm. Boott): Iowa, Ames, 1872, Spirit Lake, June 21, 1881 (/- C. 
Arthur). Superficially resembling C. tribuloides, var. reducta. 
++ ++ Mature perigynia more than 4 mm. long (very rarely shorter in exceptional 
individuals of C. tenera, var. invisa, and C. festucacea, var. brevior). 
= Perigynia elongate-ovate, about half as broad as long (suborbicular in 
var. Richii). 
12. C. renera, Dewey.— Figs. 31, 32. —Culms slender and flexuous, 
sharply angled, smooth except at summit, 3 to 9 dm. high: leaves 
shorter than or rarely exceeding the culms, very ascending, 1 to 2.5 mm. 
broad: spike slender, moniliform (or on late culms more or less con- 
gested), of 3 to 9 broadly ovoid brownish spikelets 8 to 12 mm. long, with 
