16 
ILLUSTRATIONS OF THE GENUS OAREX. 
apicem evanescente : superiores nervo ad apicem vel extra pro- 
ducto : foeminese acutse, subinde cuspidatse vel apiee ciliolatse. 
Perigynium 2\-3 lin. longum, 1A,- lin. latum : rostro glabro, 
apice ad margines laciniasque tantum serrato: nervis sub-12, 
quorum 7 magis promineutibus aliis tenuioribus superne eva- 
nidis. Achenium IA lin. longum, A lin. latum, triquetro-ob- 
ovatum; stylo eontorto. 
Aspectus potius C. vesicarice quam C. bullatee; crescit in 
limosis, nec in pratis. A C. buttata differt culmo validiori; 
foliis latioribus; spicis pluribus, masculis ssepius 3, binis infe- 
rioribus bracteatis, foemineis plerumque 2 rarissime 1, cylin- 
dricis, angustioribus, magis approximatis; perigyniis minori- 
bus, rostro breviori; squamis interdum cuspidatis. 
In twenty-four specimens I find— 
9 with 4 spikes. 6 with 2 male. 5 with 1 female. 
12 „ 5 16 „ 3 16 „ 2 
3 „ 6 2 „ 4 3 „ 3 
In thirty-five specimens of 0. bullata I find— 
12 with 3 spikes. 22 with 2 male. 23 with 1 female. 
21 „ 4 13 „ 3 12 „ 2 
2 „ 5 
I have named this species after its discoverer, Mr. Olney, to 
whom I am exclusively indebted for it. I have not seen it in any 
other collection. 
41. C. Baltzellii (Chapman); spicis 4-5 purpureis cy- 
lindricis erectis, terminali mascula pedunculata, reliquis 
foemineis vel apice extremo masculis, suprema vel binis 
superioribus subremotis inserte vel omnibus radicalibus 
longe exserte insequaliter pedunculatis sublaxifloris basi 
attenuatis, vaginis superioribus subaphyllis; stigmatibus 
3 ; perigyniis ellipticis piano-triquetris stipitatis basi at¬ 
tenuatis rostellatis, ore integro antice oblique secto, apice 
subexcurvis pubescentibus crebre nervosis viridibus su¬ 
perne purpureo tinctis, squama oblongo-obovata truncata 
obtusissima saepe emarginata vel abrupte acutatabrevecus- 
pidata apice ciliolata purpurea medio late pallida angus¬ 
tioribus longioribus vel subaequantibus.— C. Baltzellii, 
Chapman, MSS.; Deivey, Sill. iii. (2 ser .) 355, 1847; 
Sartwell, Exs. n. 103! C. Chapmani, Torrey, MSS.! 
(Tab. XLIII.) 
Hab. In America septentrionali. Florida, Chapman. 
In sandy ravines. 
Culmus gracillimus, debilis, 9-12-pollicaris, scaber. Folia 
radicalia 2-3 lin. lata, culmo longiora, plana, glaucescentia, 
supra vesiculose-scabrata. Vaginae superiores 4-8 lin. longse, 
cuspidatse: inferiores breve foliacese. Pedunculi inferiores 
insequales, 2^-4 poll, longi. Spica mascula 12-16 lin. longa, 
1| lin. lata, cylindrica, purpurea, plus minus longe peduncu¬ 
lata, in uno specimine basi flosculis foemineis 2 instructa. Spi- 
culae foemineae 8-18 lin. longse, 2-21 lin. latse: suprema e 
mascula 2 poll, remota, altera interdum subapproximata: vel 
omnes radicales : ssepe apice extremo masculse. Squamce pur¬ 
purea;, apice ciliolatse: masculse imbricatse, apice rotundato- 
obtusse, nervo extra apicem producto, inferiores latiores, emar- 
ginatse : fceminese medio late pal lid;c, laxiores. Perigynium. 21 
lin. longum, Af-fib lin. latum, sub lente tenuissime granu¬ 
lation. Achenium l-A-hm- longum, A lin. latum, acute piano- 
triquetrum, ellipticum, basi styli apiculatum, stipitatum, fus- 
cum; stipite pallido. 
We are exclusively indebted to Dr. Chapman for this addition 
to the Bigitatce of Fries. Dewey describes the leaves as slightly 
pubescent. I observe nothing but copious little white vesicles, 
often ruptured at top, on the upper surface of them. 
42. C. Boottiana (Bentham); dioica!, spicis 1-2 pur¬ 
pureis cylindricis erectis pedunculatis, mascula 1 basi 
attenuata, feeminea 1 densiflora vel rarius 2, infima bre¬ 
viori contigua vaginata, vagina subapbylla; stigmatibus 
3 longis capillaceis; perigyniis triquetro-obovatis eros- 
tratis obtusis vel abrupte rostellatis rectis, ore biclentato 
ciliato, stipitatis nervatis pubescentibus pallidis superne 
purpureo tinctis marginibusque ciliato-dentatis, squama 
oblonga obtusa breve abrupte apiculata vel lanceolata 
acuminata acuta cuspidata ciliolata purpurea medio pal¬ 
lida apice albo-hyalina angustioribus brevioribusque.— 
C. Boottiana, Bentli., Boston Journ. Nat. Hist. v. (1845). 
(Tab. XLIV.) 
ITab. In America septentrionali. Louisiana, Drum¬ 
mond, n. 560 {Herb. Bentham)-, Alabama, Mr. Deters. 
Culmus 6-8-poll., gracilis, triqueter, scaber, superne nudus, 
basi foliis angustis brevibus vaginantibus tectus. Folia ste- 
rilia 1-2 lin. lata, firma, culmo multum longiora, lsete viridia, 
basi purpurea; qusedam angusta fere setacea. Bractea lan¬ 
ceolata, cuspidata, fissa, basi amplectens: inferior quandoque 
sterilis, 2 poll, remota. Vagina 3-12 lin. longa. Spica mas¬ 
cula 12-14 lin. longa, 2 lin. lata: feeminea 17-2 poll, longa, 
3 lin. lata, rarius altera ad basin superioris sita, 6-8 lin. longa. 
Squamce conformes, abrupte vel sensim acuminatse, acutse: 
vel feeminese inferiores latiores, oblongse, obtusse, abrupte api- 
culatse, muticse : superiores lanceolatse, acuminatse, acutse, cus¬ 
pidatse, nervo angusto pallido. Perigynium 2-2Ar lin. lon¬ 
gum, A-—ro lin. latum. Achenium (cum stipite A Bn. longo) 
17 lin. longum, A l' 11 ' latum, oblongo-triquetrum, ferrugi- 
neum, basi styli incrassata. 
A C. Baltzellii differt inflorescentia dioica !; spica foeminea 
crassiori, densiflora; squamis foemineis nusquam emarginatis; 
superioribus acuminatis, acutis, nervo centrali augusto; peri¬ 
gyniis rectis, ssepe erostratis, obtusis, vel rostellatis, ore biden- 
tato ; foliis radicalibus lsete viridibus, angustioribus. 
C. Baltzellii was not published by Dewey before 1847, and 
when I saw it, I thought for some time that the immature speci¬ 
mens from New Orleans, from which C. Boottiana was described 
in 1845, might prove to be a depauperate form of the Florida 
plant, discovered by Chapman; but having been favoured lately, 
through the kindness of Dr. Gray, with mature specimens of 
C. Boottiana, from Alabama, sent by Mr. Peters, I find the dioi- 
cous inflorescence to be constant, and that the scale and perigy¬ 
nium afford distinctive characters. Still, from the occasional pre¬ 
sence of a subremote vaginal bract, it may be found hereafter that 
the inflorescence approaches more nearly that of C. Baltzellii , and 
that even radical spikes may appear, as in that species. 
The specimens figured are the original ones from Drummond 
in a young state. The mature perigynia are from Mr. Peters’s 
specimens, sent to me in a letter by Dr. Gray. 
43. C. marcida (Boot!); spica oblonga pallida, e spi- 
culis androgynis apice masculis parvis ovatis congestis 
composita, inferioribus compositis, omnibus sessilibus co- 
arctato-imbricatis nudis; stigmatibus 2 ; perigyniis sub- 
orbiculatis vel ovatis plus minus longe rostratis bifidis 
plano-convexis nervatis fuscis superne margine alatis serra- 
tis, squamam ovatam acutam pallide stramineam margine 
albo-hyalinam subsequantibus.—C. marcida, Booit,HooJc. 
FI. Bor. Am. ii. 212. t. 213. (Tab. XLY.) 
Hab. In America septentrionali, ad ripas fl. Columbise, 
Scoider. 
Culmus li-2|-ped., gracilis, firmus, triqueter, superne nudus, 
scaber, basi foliatus. Folia lineam lata, culmo breviora. Spica 
8-15 lin. longa, 4-5 lin. lata. Spiculce 2-3 lin. longse, lineam 
latte, numerosse: superiores simplices: inferiores e spiculis 
