MACLOSKIE: REVISION OF FLORA PATAGONICA. 71 



Subgenus PSEUDOCAREX. 



U. KINGII Boott. 



Small herb, with short-ovate capitate spikelets. Utricles lance-subulate, 

 opening obliquely. Rachil very shortly hooked. Only species of this 

 subgenus. 



Magellan ; Port Famine ; Fuegia. 



U. microglochin belongs to Carex because ofitshooklessunjointed seta. 

 It is Carex microglochin Wahlenb. Its prevailing Arctic distribution favors 

 the same conclusion. 



NOTE ON THE GENUS CAREX, SEDGE. 



Carex contains about 800 existing species, scattered over the world ; 

 and also remains of many more fossil species. The one great genus is 

 arranged by Kiikenthal under four subgenera, and 69 sections, including 

 numerous subsections, each of which stands for an array of species, closely 

 allied to each other. 



For the Patagonian species our most convenient method is to attend 

 especially to such of the sections and subsections as are represented in the 

 flora of that region ; and thus to confine our attention to this part of the 

 large Sedge Family ; and the sections and other groups are numbered for 

 convenience of reference. 



DIVISIONS OF THE TRUE SEDGES. CAREX, No. 12. 



Subgenus I; Primocarex, No. 13, with only one terminal spikelet; capitata. 

 Subgenera with several spikelets. 



Subg. II. Spikelets bisexual, sessile. Cladoprophyl (*'. e., bract of second or third axis) 

 mostly none formed. Subgen. II, Vignea, No. 14. 



Spikelets bisexual or unisexual, mostly pediceled. Bract always developed. 



Subg. III. With bisexual spikelets. Bract utriculiform. Subgen. Ill, Indocarex, No. 15. 

 Subg. IV. Spikelets mostly sexually distinct. Bract, at least in lower spikelets, shoe- 

 shaped. Subgen. IV, Eucaruc, No. 16. 

 Subgenus I. Primocarex. Spikelet single, terminal. Utricle rounded at base. 



Stigmas 2, spikelet bisexual, small, ovate; male part short. Sect. 17. Microcephala, No. 13, 

 Stigmas 3. Sect. Juncijormes. Androgynous, male part several-flowered; scales concave, 

 pallid, the lowest bractlike. Utricles pyriform, pubescent. 



aphylla, andina, subantarctica, No. 18. 



Sect. Unciniceformes, as Primocarex, No. 13: but scales soon caducous. Stigmas 2-3: andn 



gynous. Utricles membranaceous, erect, becoming divaricate. 

 Subsect. Aciculares. Spikelet bracted ; utricles not divaricate nor reflexed. 



trichodes, caduca, vallis-pukhrac, No. 20. 



