68 BULLETIN UNIVERSITY OF MONTANA 



ADDENDA. 



Since the preceding was set in type the following notes on species and; 

 descriptions of new species have been prepared, and are inserted. 



The following- notes may help to clear up the relationships of two sedges 

 in our region. William Boott first separated one species and Bailey the other. 

 Boott in his description of C. luzulaefolia confounded the two species, as they 

 grow together in the Sierras. This is shown by the names he gave to my 

 material. Mackenzie has also tried to separate the Nevada form of ablata 

 which verges toward C. luzulaefolia, but it is not distinct. 



Common characters are Upper spikelets sessile or nearly so, not linear, the 

 lower mostly clavate, on elongated and filiform peduncles. Perigynia green 

 or rusty with age, slightly inflated, the lanceolate, body nearly filled by the 

 seed, with triangular and substipitate base, and tapering into a flat triangular 

 beak which is scabrous and papillose and deeply 2-toothed and purple-striped 

 down the middle, the upper half empty, a little inflated, papery, strongly 

 nerved on the sides and faintly nerved on the face, green till mature, not less 

 than 4 mm. long, a little longer than the scale, spreading. Bracts green and 

 leaf-like, shorter or little longer than the blade, not as long as its sheath 

 which is light colored and with rusty ring at tip. Sheaths widening a little 

 above. Leaves many, broad and flat, 3-9 mm. wide, .shortly acuminate, yellow- 

 ish, smooth, rarely more than 1-2 dm. long, gradually reduced above along 

 the stems to bracts, the central sheaths often 1 dm. long, the upper bracteal 

 ones barely less than 2 cm. long. Stems at base clothed with coarse leaf 

 fibers, often 8 mm. thick, gradually tapering at tip to almost filiform, about 

 3 feet high and erect, few together from very shortly stolonlferous rootstacks 

 often 1 cm. thick. Plants of dry meadows at high elevations. 



Luzulaefolia W. Boott Bot. Cal. 2 250 (1880). in part. C. fissuricola Mac- 

 kenzie, (Luzula-leaved Sedge.) Spikelets 2-3 mm. long, 6-9 mm. wide, 

 the upper ones clustered and nearly sessile. Perigynia 6 mm. long and 2 mm. 

 wide, punctate and slightly granulated above, straight, beak about half the 

 whole, green or rusty only. Scales dark-brown with light center, scarious 

 margin hardly any and strong midrib going to the tip or projecting as a 

 short awn or mucro. Leaves 4-9 mm. wide, shortly acuminate, quickly reduced 

 to scales at base of .stems. Wasatch mountains, Utah, westward and north- 

 ward. 



Oblata Bailey. Bot. Gaz. 13 82 (1888) (oblate Sedge). Spikelets 1-2 cm. 

 long, the sterile 7-15 mm. long and often compound, 2-8 mm. wide, sometimes 

 fertile in the middle, mostly clavate; fertile ones club-shaped, 1-2 cm. long, 

 3-6 mm. wide, only the uppermost one sessile, the rest on variously elongated 

 peduncles, dark-brown. Perigynia with beak about % the whole, smooth, 

 about 3 mm. long, and 2 mm. wide, with recurved tip. Scales purple with 

 light center, ovate to oblong, obtuse, ovate to oblong, with broad hyaline and 

 white and lacerate margins and tip, the midrib not reaching the tip. Leaves 

 about 3 mm. wide, long-acuminate, rarely at all reduced below. Rather com- 

 mon in the Sierras. This probably includes C. herbariorum. First published 

 as ablata, but intended for oblata. The Utah forms referred here are better 

 placed in luzulaefolia. Kukenthal is probably right in placing this as a vari- 

 ety of luzulaefolia, since the Utah and Nevada material has sharp .scales and 

 less hyaline and longer perigynia. 



Two other sedges on which our field work throws much light are Mon- 

 tanensis and Tolmiei. They belong to the same group as those above but 

 verging toward the atrata group in the flattening of the perigynia and the 

 reduction of the beak. 



Common characters are: Spikelets purple, from almost black to chestnut 

 colored, small, short, oblanceolate to ovate, compactly flowered, contiguous 

 (or amounting to that by the elongation of the lower peduncles), the stami- 



