424 MACKENZIE: NOTES ON CAREX 
much stouter plant of a deeper green color. The leaf-blades 
average nearly 2.5 mm. in width, and the lower spikes usually 
have from nine to twelve perigynia, although the number varies 
between six and twenty. The stigmas are short, thickish and 
twisted and are dark brownish red in color. The perigynium is 
abruptly contracted into the beak, is deep green in color, and is 
conspicuously white-hyaline at the orifice. Like Carex rosea, this is 
a widely distributed plant, ranging from Maine to Manitoba and 
southward to Alabama, Tennessee and Missouri; and like it, it 
matures in late May or June. For this species, which is appar- - 
ently nameless, the name Carex convoluta is here proposed. 
A third plant of much more restricted range remains for con- 
sideration. This is a very slender plant, in which the leaf-blades 
average little more than I mm. in width. The perigynia are very 
small, mostly 2.5-3 mm. in length, and are ascending or but little 
spreading. Each spike has but two to six perigynia, and the 
bract of the lowest spike is as conspicuous as the bract in Carex 
trisperma. In fact, the general aspect of the plant is very much 
like that of Carex trisperma. The stigmas are short and twisted, 
as in Carex convoluta, and the perigynium is abruptly contracted 
into the beak, as in that species. The perigynia, however, are 
rather lighter green in color, and less conspicuously white-hyaline 
at the orifice. 
This is a later maturing plant than either of the other two. 
It blooms late in May or in June, and can be found in good condi- 
tion in July and August. It is Alleghenian in its distribution and 
I have seen specimens showing a range from Maine and New York 
southward to North Carolina and Tennessee. It is the plant 
treated by Dr. Small (Fl. SE. U. S. 218) as Carex radiata and 
also the plant treated by Dewey (Am. Jour. Arts and Sciences, 
10: 276) and also by Boott (Ill. Car. 2: 81. pl. 225) as Carex rosea 
var. radiata. The name “‘radiata,” however, goes back to a plant 
described by Wahlenberg (Kongl. Vet. Akad. Hand. [II.] 24: 147) 
under Carex stellulata, as 8 radiata, and collected in North America 
by Rev. Hultgren. As pointed out by Boott (/. c. 81) the descrip- 
tion of this plant agrees best with Carex trisperma or some species 
of the C. stellulata group. Schkuhr referred it asa synonym to his 
Carex rosea (1. c. 15), and Dewey, as stated above, referred it to 
