Hawaiian Species of Carex — KRAUSS 
253 
are illustrated for each species and two for 
each variety. 
The maps are provided with legends ex- 
plaining the symbols used. Where a symbol 
is half-shaded the location is considered only 
approximate. Only those locations which 
could reasonably be assigned to an area as 
small as 1 square mile are plotted. 
key TO HAWAIIAN Carex 
1. Perigynium trigonal to napiform; 
achene with a single, invaginate 
furrow at the equator 2 
Perigynium trigonal to lenticular; 
achene with no furrow at the 
equator. 3 
2. Teeth of bidentate beak over 1 mm. 
in length; beak and perigynium 
chartaceous, green, yellow, brown, 
not red-waxy 
. C. wahuensis var. Meyeri (p. 254) 
Teeth of bidentate beak under 1 mm. 
in length; beak or entire perigy- 
nium red-waxy 
C. wahuensis var. rubiginosa (p. 257) 
3. Stigmas 3; leaves stiff, erect, strong- 
ly involute or awl-shaped 4 
Stigmas 2; leaves flexuous, not nor- 
mally involute or awl-shaped . . 5 
4. Mature plants over 15 cm. tall; 
spikes with more than 10 ach- 
enes; not dwarfed; leaves clearly 
involute .............. 
. C. montis-eeka ( p. 260) 
Mature plants under 15 cm. tall; 
spikes with fewer than 10 ach- 
enes; dwarfed; leaves awl-shaped 
. . C. montis-eeka f. filifolia (p. 262) 
5. Perigynium multinerved, more than 
four nerves per side 6 
Perigynium at most three-nerved on 
a side or not nerved . 9 
6. Perigynium invaginate at the base, 
cordate; not stipitate 
. C. Svenonis (p. 263) 
Perigynium not invaginate at the 
base; stipitate 7 
7. Perigynium concave-convex, spindle- 
shaped, winged, non-glandular; 
beak strongly bidentate 
. C. Meyenii (p. 264) 
Perigynium bi-convex, not winged; 
beak narrow, entire or subentire . 8 
8. Bracts strongly emarginate; perigy- 
nium ovate, strongly nerved, min- 
utely glandular, not purple-black; 
spikes gynaecandrous 
C. Nealae (p. 267) 
Bracts acute to aristate, never emar- 
ginate, perigynium splotched with 
purple-black, not glandular, weak- 
ly nerved; spikes androgynous . . 
. C. alligata var. Degeneri (p. 278) 
9. Perigynium winged, concave-convex; 
rostrum indistinct, tapering into 
the base of the perigynium; spikes 
short, forming a semiglobose ter- 
minal head 3 cm. in diameter or 
less 
C. macloviana var. subfusca (p. 269) 
Perigynium not winged, bi-convex; 
beak distinct; spikes separate, over 
3 cm. long, pendulant or erect, 
forming a branching inflorescence 10 
10. Perigynium light brown or green, 
dull chartaceous to membranous . 
C. pluvia (p. 271) 
Perigynium black or brown, highly 
polished, indurate 11 
11. Perigynium brown or yellow-brown, 
lenticular; one nerve on one side 
raised to give a trigonal aspect . . 
......... C. alligata (p. 275) 
Perigynium black or purple-black; 
broad spindle-shaped, not nerved . 12 
12. Perigynium not tightly packed in 
the spike, rachis visible, achene 
triangular in cross section, perigy- 
nia not stipitate 
C. kauaiensis (p. 279) 
