50 Rhodora [Marcu 
+ Perigynium nerveless (or faintly nerved in exceptional specimens of 
var, miliaris. 
C. saxaTILIS, L. Low (2 or 3 dm. high) with flat leaves, o.5 cm. 
or less wide, nearly or quite equalling the culm: staminate spike 1 
(rarely 2), short-peduncled or subsessile ; pistillate spikes purplish, 
1 to 3, sessile or the lowest short-peduncled, subglobose or short- 
oblong, 0.5 to 2 cm. long, 5 to 8 mm. thick: perigynium purplish or 
purple-tinged, usually nerveless, ovate, 3 or 4 mm. long, tapering 
gradually to a short subentire beak, slightly longer than the acutish 
or blunt purple scale: stigmas usually 2.— Sp. 976; Bailey, Proc. 
Am. Acad. xxii. 65, & Mem. Torr. Club, i. 37. C. pulla, Good. 
Trans. Linn. Soc. iii. 78, t. 14 ; Smith, Eng. Bot. xxix. t. 2045; Fl. 
Dan. xvi.t. 2850.— Northern Europe and Greenland: Hupson Bav, 
North and South Twin Islands (7. M. Macoun): UNnGava, Prince 
George's Sound (A. Bell, Herb. Geol. Surv. Dept. Can. no. 18, 
795); Ungava River (Spreadborough, Herb. Geol. Surv. Dept. Can. 
no. 13,605): LABRADOR, Battle Harbor (4. C. Waghorne): MAINE, 
margin of pond, Chimney Basin, Mt. Katahdin, alt. 925 m. (7. Æ. 
Churchill, E. F. Williams & M. L. Fernald). 
Var. MILIARIS, Bailey. Slender and taller, 2.5 to 6 dm. high: 
leaves nearly filiform: pistillate spikes mostly paler and more 
slender, 1 to 2.5 cm. long, 3 to 7; mm. thick. — Bot. Gaz. ix. 120, & 
Proc. Am. Acad. xxii. 66. C. miliaris, Michx. Fl. ii. 174; Boott, 
Ill. i. 73, t. 200, fig. 2; Bailey, Mem. Torr. Club, i. 35 & in Gray, 
Man. ed. 6, 593. C. pulla, Good., var.? miliaris, Gray, Man. ed. 5, 
602. C. miliaris, var. obtusa, Bailey, Mem. Torr. Club, i. 36. — Mar- 
gins of rivers and lakes from Central Maine northward, rare. 
NEWFOUNDLAND (Za /y/aie); Exploits River (Robinson & Schrenk, 
no. 87); Grand Lake & Coal River (4. C. Waghorne, nos. 20, 
23): Quepec, East Main River (4. H. D. Ross); Lake St. John 
(A. H. Smith, G. G. Kennedy, Ezra Brainerd): NEw BRUNSWICK, 
Rothsay & Richibucto (J. Fowler); Drury's Cove, St. John (Wm. 
Boott): Maine, outlet of Moosehead Lake (4. H. & C. E. Smith). 
Var. rhomalea. Coarser throughout than the last, mostly taller : 
the stouter culm rather thick at base: the coarser leaves involute : 
spikes mostly thicker and longer. — C. miliaris, var. major, Bailey, 
Mem. Torr. Club, i. 36. — LABRADOR (Turner); Seal Lake (Spread- 
borough, Herb. Geol. Surv. Can. no. 13,481): Quknkc, Jupiter 
River, Anticosti (7. Macoun); Lake Mistassini (5. M. Macoun) : 
MAINE, outlet of Moosehead Lake (7. C. Porter). 
* * Perigynium turgid, often bladder-like; the beak sharply bidentate. 
+ Scales smooth or only the lowest serrulate. 
++ Perigynium turgid, but not conspicuously bladder-like: culm thick 
and spongy at base, generally smooth and bluntly angled above: leaves 
prominently nodulose, 
