SEDGE FAMILY. 



I. 



Uncinia microglochin (Wahl.) Spreng. Northern Urania. 





Can:i- microfflochin Wahl. Kongl. Acad. Handl. (II.) 



24: 140. 1803. 



Carev oliganiha Boott, 111. 174. />/. j>So. 1867. 

 I'm in ia microglochin Spreng. Syst. 3: 830. 1826. 



Perennial by short stolons, culms very slender, 

 weak, 4 / -i2 / long. Leaves %"-i" wide, much 

 shorter than the culm; spike 4 // -8 // long, usually 

 pistillate for more than one-half its length; scales 

 oblong-lanceolate, i-nerved, deciduous; perigynia 

 very narrowly lanceolate, 3 // ~4 // long, less than 

 '," thick, strongly reflexed in fruit; achene ob- 

 long, obtusely -3-angled, much shorter than the 

 perigyuium; axis of the pistillate flower bristle- 

 like, long-exserted beyond the orifice of the peri- 

 gyuiuni. 



Greenland to James Bay and British Columbia. Also 

 in the arctic and mountainous parts of I -hi rope and 

 A-ia and at the Strait of Magellan. Plant with tin- 

 aspect of Care.v pauciflora. Summer. 



20. CAREX L. Sp. PI. 972. 



Grass-like sedges, perennial by rootstocks. Culms mostly 3-angled. Leave* 3-rankcd. 

 the upper elongated or very short (bracts ) aud subtending the spike* of flower*, or wai 

 Flowers monoecious or dioecious, solitary in the axils of bracts (scales). 8 

 pistillate, wholly staminate, or bearing both staminate and pistillate flowers 

 Perianth none Staminate flowers of 3 stamens, the filaments filiform, i 

 of a single pistil with a style and 2 or 3 stigmas, borne on a very short axis in the a\: 

 sac -like bractlet- or second bract called the perigyniuin (utricle , which Ijr enclose* 



the achene. Achene 3-augled, lenticular or plano-convex. 



A vast genus, of more than looo species, widely distributed, most abundant in the temperate 

 zones. Besides the following about an equal number occur in the wcsti-tn and southern p., 

 North America. Specimens can only be satisfactorily determined when i ite mature 



The genus is divided into the two subgenera, Kin. AKK.X i i-s 



I. Staminate flowers numerous, in one or more terminal spikes, which are sometimes pistillate at 

 the base or summit ; or the spike solitary and the staminate flowers uppermost or basal, rarely 

 cious ; stigmas mostly 3 and the achene 3-angled or swollen ( stigmas 2 and the sclnas 

 or compressed in nos. 12-16; 40-59; 67-72); pistillate spikes stalked or sessile, the lower 

 stalked. Nos. 1-142. EUCAREX. 



A. PERIGYNIA MOSTLY LONG-BEAKED, i l A"-io" i.oxr,. oi n \ IMI ..\ii.n rnn BXAK 



ING AS THE BODY OR LONGER ( SHORT-HKAKKI) IN NoS. II l'i. .>| VM' ^ J'iSTILLATB WUUB 

 MOSTLY LARGE (SMALL IN NOS. I, 13 AND 14), GLOHOSK. iiVMin. "Ill i >M . i iK <. M I M * !< 



(a) Perigynia membranous or papery. No*. 1-31. 



1. -Spike solitary, few-flowered, staminate above; perigynia strongly reflexed. subulat 



FLORAE. 



2. Spikes normally several, the staminate uppermost; if solitary, staminate at the base. 



30.) Nos. 2-31. 



* Perigynia ovoid, conic with a narrowed base, or subulate. Upcrinc into the beak 

 t Teeth of the perigynium-beak slender, short or none; not stiff nor a 

 J Teeth of the perigynium-beak lanceolate or subulate. No*, a- 



Pistillate spikes ovoid or globose, few-many-flowered. 

 Perigynia subulate, reflexed when mature. 

 Perigynia conic or ovoid, not reflexed. 



Plants yellow or yellowish; perigynia little inflated. 

 Leaves i"-2" wide; staminate spikes sessile. 

 Leaves 2" -6" wide; staminate spike mostly stalkrd. 

 Plants green; perigynia much inflated; staminate spike stalked. 

 Leaves 2-3" wide; heads loosely flowered. 

 Leaves 3" -5" wide; heads globose, dense. 

 1'istillate spikes oblong or cylindric, densely many-flowered. 

 Pistillate spikes oblong; achene longer than thick. 



Perigynia strongly several-nerved, shining; leaves i 

 Perigynia many-nerved, dull; leaves 2 ( '-5 wide. 

 Pistillate spikes cylindric; achene not longer than thick. 



Perigynia yellowish, tapering into a beak twice as long as the t 



Perigynia greenish-brown, abruptly narrowed into a b 



. 



.// 

 ttmmttan* 





c. 



