194 
ILLUSTRATIONS OF THE GENUS CAREX. 
Spicules ovate, inferiores composite. , Squamce masculce paucse, 
minores lanceolate, acute. Perigyniurn lin. longum, 
1 lin. latum, plurinervium. Aclienium minimum, lin. 
Ion gum, x ! 0 ii' 1 - latum, ellipticum, lenticulare, lucidum, ferru- 
gineum. 
I am indebted to Dr. Gray for an authentic specimen of this 
species. The perigyniurn, with its broad ala, truncate at base, is 
like that of C. arenaria, but the habit is different, and, like that 
of G. leiorhyncha, Meyer, which, however, has au inalate peri- 
gynium. 
459. C. nexa (Boott); spica elongata paliide viridi 
demum fulva, e spiculis 4-7 gracilibus remotis erectis, 
terminali mascula densiflora elongata, reliquis femineis 
brevioribus laxifloris, superioribus inserte, inferioribus 
exserte pedunculatis ; bracteis vaginatis omnibus seta- 
ceis spiculis suis brevioribus, vel inferioribus foliaceis 
culmo longioribus ; stigmatibus 3 ; perigyniis fusiformi- 
bus utrinque acutis excurvatis, ore albido emarginato, 
parcissime puberulis demum glabris nervatis paliide 
viridibus, squama lanceolata acuta vel acuminata paulo 
angustioribus longioribusque. (Ic. ined. DCLIII. in 
Herb. Hew.) 
Hab. In China.—Hongkong, WrightRinggold, and 
Rodgers s Exp. {Herb. Gray). 
Csespitosa. Culmi plures, subsesquipedales, filiformes, lasves, 
basi breve foliati, vaginis purpureis, rudimentisque foliorum 
tecti; pars spicigera 9-12 poll, longa. Folia radicalia 2-2| 
lin. lata, culmo longiora, plana; culmea 4, anguste brevia. 
Bractees vaginate, in uno specimine inferiores elongate; in- 
fima subpedalis. Vaginee tumidulse, basi purpurese; infima 
subpollicaris. Pedunculus infimus subinde 3 poll, longus, 
scaber. Spicula mascida 2-4 poll, longa, 1-11 lin. lata; 
feminecs 9-16 lin. longse, 1-f lin. late, a se 1-5 poll, remote, 
summa nunc sessilis, evaginata. Squamce masculce lanceolate, 
obtusiusculae. Perigyniurn lqu lin. longum, T % lin. latum. 
Achenium conforme, 1-^ lin. longum, lin. latum, infra 
mediam tumidum, supra, infra et ad angulos lacunose indenta- 
tum, nigro-purpureum, apice annulo albo basin styli bulbosum 
cingente apiculatum. 
460. C. nigella (Boott); spicis 4-5 oblongis erectis 
approximatis, terminalibus 1-3 mascnlis fusco-ferrugi- 
neis, femineis 2-3 atro-purpureis concoloribus bracteatis, 
inferioribus pedunculatis; bracteis foliaceis evaginatis, 
inferioribus culmum paulo superantibus; stigmatibus 
3; perigyniis ellipticis cylindrico-rostratis, ore antice 
obliquo bidentato, enerviis granulatis atro-purpureis basi 
pallidis, squama lanceolata acuta atro-purpurea nervo 
concolori extra apicem producta latioribus brevioribus. 
—C. nigella, Boott in Hooker, FI. Bor. Americana, 2, 225. 
{Ic. ined. DCLIV. in Herb. Hew.). 
Hab. Ad fluv. Columbia, America septentrionali, 
Tolmie. 
Radix repens, fibris lignosis lanatis. Culmus subpedalis, 
triqueter, apice scabriusculus, basi foliatus; pars spicas gerens 
2 poll. Folia 1-2 lin. lata, culmo breviora. Bractece folia- 
cese; auriculis purpureis. Spices masculce 4-6 lin. longse, 
2 lin. late, inferiores sessiles; squamse lanceolate, nervo extra 
producto. Spices feminecs 5-7 lin. longse, 2-2| lin. late, 
erectse. Perigyniurn l- 7 - 0 - bn. longum, T 7 , y lin. latum. Ache¬ 
nium ~ ]in. longum, -i (T lin. latum, triquetrum, flavidum, 
basi styli sequali apiculatum. 
A C. Tolmiei, Boott, differt spicis paucioribus masculis 2-3, 
perigynio bidentato majore, squamis lanceolatis mucronatis. 
461. C. nutans (Host); spica subeiongata subflavida 
demum fusco-purpurea, e spiculis 3-5 erectis densifloris, 
masculis 1-3 linearibus, femineis 2 rarius 1-3 remotis 
oblongis vel cylindricis crassis summa nunc apice mas¬ 
cula evaginatis, vel infima basi laxiflora saepe exserte 
pedunculata; bracteis evaginatis vel infima culmum su- 
perante subinde vaginata; stigmatibus 3 ; perigyniis 
turgidis oblongo- vel lanceolato-ovatis obtuse trigonis, 
angulis rotundatis sensim subrostratis, ore bifurcato, 
rostro apice laciniisque dentatis nervatis, nervis demum 
latentibus striato-sulcatis paliide demum sanguineo-piinc- 
tatis vel atro-purpureis spongiosis, squama ovata acumi- 
nato-acutata ciliata vel longe aristata purpurea medio 
pallida latioribus longioribus.—C. nutans, Host, Gr. 61, 
t. 83; Willd. 299; Schk. f. 205; Kunth, 488; Biebst. 
391, et 3, 618; Ledeb. Alt. 220; Kocli, 887 ; Reich. 
27, t. 265 ; Lange, 140 ; Rarlat. El. Ital. 219 ; FI. 
Ross. 315; Gren.et Godr. 430; Tchihatch. 579; Sleud. 
237. C. melanostachya, Biebst. {Jicle Willd) ; Willd. 
299. C. acuminata, Reich. 27, t. 267 {non Willd). 
C. heterostachya, Bunge, Mem. Petersb. 2,142 (non Tor). 
Hab. In Europa et Asia. — France, Germany, Italy. 
Armenia, Caucasus, Ural, Altai. Pekin, China, Bunge. 
Rhizoma stoloniferum. Culmus subpedalis (florifer nutans, 
Host), gracilis, lsevis, vel superne scaber, basi vaginis purpu¬ 
reis vel pallidis fibrilloso-laceris tectus; pars spicigera 4-5, 
rarius 12 poll, longa. Folia 1-1^ lin. lata, culmo longiora vel 
breviora. Bractece foliacese, evaginate, auricula ferruginea 
amplectente, vel infima, culmo longior, vaginata. Vagina 3-10 
lin. louga. Pedunculus 3-12 lin. longus. Spicules masculce 6-15 
lin. longse, 1-2 lin. late, contiguse; feminecs 9-18 lin. longse, 4 
lin. late, remote; suprema interdum apice mascula; infima 
basi laxiflora, raroque composita. Squamce masculce ovate 
latiores, vel lanceolate angustiores; inferiores obtusse, muticse, 
apice plus minus ciliatse; superiores hispido-cuspidate, fusco- 
purpurese, nervo pallido, demum ferruginese. Perigyniurn 
turgidum, ventricosum, oblongo-ovatum, obtusissime trigo- 
num, opacum (nusquam lucidum), 2 x 5 o~T a o bn. longum, l T l (T 
lin. latum, vel lanceolato-ovatum -Jg- lin. latum, vix vel bre- 
viter late rostratum, ore purpureo bifurcato, rostro laciniis¬ 
que dentatis, aliter glabrum vel (sub lente) pube rara minuta 
obscure conspersum, sulcatum, nervi in sulcis latentes, pal¬ 
lidum, sanguineo-punctatum, demum atro-purpureum, spon¬ 
giosum. Achenium lg o lin. longum, T 7 0 —, 8 a - lin. latum, ovale 
vel ellipticum, triquetrum, castaneum, basi styli sequali 
apiculatum. 
The spongy sulcate perigyniurn, with the absence of any per¬ 
ceptible nerves, at once distinguish this species from O. paludosa, 
to which Kunth was inclined to refer it. Both Bieberstein and 
Ledebour allude to the perigyniurn having a slight pubescence. 
It is scarcely perceptible even under a strong lens. The nerves 
apparent in the immature perigyniurn become latent in the sulci, 
formed evidently by the increasing thickening of the spongy in¬ 
terstices. The specimen from Pekin, though young, is evidently 
referable to O. nutans. 
The specimens figured are from France and Germany. 
462. C. obtusata (Liljebad); spica simplici mascula 
ovata vel oblonga castaneo-ferruginea nuda; stigmatibus 
3; perigyniis ovatis vel ellipticis turgidis trigonis conicis 
