MACKENZIE: NOTES ON CAREX 533 
jeighog body globose, 1. ‘ a mm. or more wide; 
not strongly 2-ed 
tees spikes with si 5 geo peri- 
gynia; culms extremely fibrillose at base 
Mexico). 9. C. geophila. 
Pistillate spikes with 1-4 strongly pubesc 
perigynia; culms little fibrillose at oat 
(Pacific slope). 10. C. brevicaulis, 
oe body Baa iain nt I-I.5 mm. 
; beak hits 2-edge 
Ma 2.5-4 . long, gir ie leaf- 
blades slender, light green, ascending, 
5 
Short-stoloniferous, the new shoots phyl- 
lopodic, the sheaths eis | filamentose 
(perigynium beak very short; achen 
roughened). 11. C. microrhyncha. 
Densely cespitose, the new shoots aphyl- 
lopodic, erect-ascending, the sheaths 
filamentose. 
Perigynia 2.5-3 mm. long, the beak 
less than es length of body; 
h, shining, minutely 
oe piaoretse oid. 12. C. abdita. 
Perigynia 3.25-4.25 mm. long, the 
nutely roughened, oblong-obovoid. 13. C. umbellata. 
Perigynia 3.5-4.5 mm. long, glabrous except 
long beak; leaf blades stiff, deep green, 
spreading, 2.5—4 mm. wide. 14, C. tonsa. 
I. CAREX GLOBOSA Boott, Proc. Linn. Soc. 1: 259. 1845 
Carex umbellata var. globosa (Boott) Kiikenth. in Engler, Pflan- 
zenreich 47°: 453. 1909- 
Clumps medium-sized, from ‘elongated slender rootstocks, 
stoloniferous, the culms 15-35 cm. high, phyllopodic, slender, 
exceeding leaves, roughened on angles above, strongly fibrillose and 
more or less reddened at base. Leaves with well-developed blades 
five to eight to a fertile culm, the lowest clustered, the upper more 
or less widely separate, the blades flat with revolute margins, 
I.5-2.5 mm. wide, varying in length from 3 cm. to 3 dm. (on 
sterile culms), attenuate-pointed, strongly roughened; terminal 
spike staminate, erect, short-peduncled, 1-2 cm. long, 2.5-4 mm. 
wide, many-flowered, the scales oblong-obovate, obtuse or acute, 
purplish brown with lighter center and hyaline margins; pistillate 
spikes two or three (with additional basal ones on long capillary 
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