62 CLASS XIX. 
E^SLE'NIA. Calyx small, 5-paited, per- 
manent ; corolla 5-parted ; segments con- 
verging, erect ; nectary 5-parted, petal-like, 
divided almost to the base ; segments trun- 
cate, flat, each terminated by 2 central fila- 
ments ; each stamen with a pair of pendu- 
lous, cylindric masses of pollen, suspended 
from the top of the conic stigma ; follicles 
in pairs, small. 
ORDER VI. HEXANDRIA. 
Aristolo'chia. Calyx 0 ; corolla supe- 
rior, 1-petalled, ligulate, inflated at the base; 
capsule 6 -celled, many seeded, (birthwort.) 
ORDER XII. POLYANDRIA. 
As^ARUM. Calyx sub-campanulate, 3 to 
4- cleft ; corolla 0 ; anthers adnate to the mid- 
dle of the filaments; capsule inferior, 5- 
celled, crowned with the calyx, (wild gin- 
ger.) 
CLASS XIX. MONCECIA. 
ORDER I. MONANDRIA. 
Zos'^TERA. Stamens and pistils inserted 
in 2 rows upon one side of a spadix ; spatha 
foliaceous. Staminate flowers with the an- 
thers ovate, sessile, alternating with the 
germs. Pistillate flowers with the germ 
ovate ; style 2-cleft ; drupe with 1 seed, 
(grass-wrack.) 
Caulin^'ia. Staminate flowers : calyx 0; 
corolla 0 , anthers sessile. PistiUate flow- 
ers : calyx and corolla wanting ; style fili- 
form; stigma 2-cleft; capsule 1-seeded; 
flowers axillary, (river-nymph.) 
Zannichel' LIA. Staminate flowers: ca- 
lyx and corolla wanting. Pistillate flowers: 
perianth single, of 1 leaf ; ovaries 4 or more ; 
style 1 ; stigma peltate ; capsule sessile. 
Cha'ra. Staminate flowei's : calyx 0; co- 
rolla 0 ; anthers globose, sessile. Pistillate 
flowers : calyx 0 ; coroUa 0 ; style 0 ; stig- 
mas 5 ; berry 1-celled, many-seeded, (cha- 
ra.) S. 
Na'jas. Staminate flowers : calyx cylin- 
dric, 2-cleft ; stamen filamentous, long ; an- 
ther 4-valved, valves spreading. Pistillate 
flowers : calyx 0 ; style with 2 stigmas ; 
nut 4-seeded. 
Euphor^bia. Rarely a perianth; invo- 
lucre mouophyllous, campanulate, 8 to 10- 
toothed, the inner segments membranaceous. 
Staminate flowers 12 or more ; calyx and 
corolla generally wanting. Pistillate flow- 
ers : solitary, central, stipitate ; calyx and 
corolla 0 ; capsule 3-lobed. (spurge.) 
ORDER II. DIANDRIA. 
Lem^'na. Staminate flowers : perianth of 
1 leaf; stamens on the base of the germ. 
Pistillate flowers : perianth of 1 leaf ; stig- 
ma fumiel-form ; capsule 1-celled, from 1 to 
5- seeded. (duck's meat.) 
Podos"temum. Staminate flowers: ca- 
lyx 0 ; corolla 0 ; stamens affixed to a pedi- 
cel. Pistillate flowers : calyx 0 ; corolla 0 ; 
germ ovate ; stigma 1, sessile ; ca^Dsule 2- 
celled, 2-valved, many-seeded ; seeds mi- 
nute, (thread-foot.) 
ORDER III. TRIANDRIA. 
Ty'pha. Ament cylindric, dense-flower- j 
ORDER IV. 
ed. Staminate flowers : calyx oh.solete, 3 
leaved ; corolla 0 ; stamens 3 together, on a 
chaffy or hairy receptacle, united below into 
1. Pistillate fiowers : below the staminate; 
calyx 0 ; corolla 0 ; seed 1, pedicelled : the 
pedicels surrounded at the base with long 
hairs resembling egret, (cat-tail, or reed 
mace.) 
Sparga'nium. Ament globose. Stam- 
inate flowers : calyx 3-sepalled ; corolla 0. 
Pistillate flowers : calyx 3 sepalled ; corolla 
0 ; stigma 2-cleft ; drupe juiceless, 1 or 2- 
seeded. (burr-reed.) 
Scle'ria. Staminate flowers : glume 2 
or 6-valved, many-flowered ; paleas awn- 
less. Pistillate flowers : calyx 2 or 6 valved, 
1- flowered ; paleas none ; stigmas 1 to 3 ; not 
colored, sub-globose, (whip grass.) 
Ca'rex. Aments imbricate, u.sually in 
cylindric spikes. Staminate flowers : calyx- 
scales single ; corolla 0. Pistillate flowers: 
calyx-scales single ; corolla inflated, mono- 
petalous, 2-toothed at the apex ; stigmas 2 
or 3 ; nut 3-sided, enclosed in the infiated, 
permanent corolla, which becomes an utri- 
culus like permanent aril ; sometimes dioe- 
cious, (sedge.) 
Trip'''sacum. Staminate flowers : glume 
2- flowered, outer one staminate, inner one 
neutral ; corolla a membranaceous glume. 
Fertile flowers : glume 1 or 2-flowered. 
sun-ounded by a 1-Ieafed involucrum perfo- 
rated near the base ; paleas with numerous 
thin membranaceous valves ; styles 2 ; seed 
1. (sesame grass.) 
Compto'nia, Staminate flowers : ament 
cylindric, with calyx-scales 1-flowered ; co- 
rofla 2-petalled or none ; filaments 2-forked. 
Pistillate flowers : spike or ament ovate ; 
corolla 6-petalled (the corolla may be called 
a calyx) ; styles 2 ; nut oval, 1-celled. (sweet- 
fern.) 
Co'ix. Staminate flowers : in remote 
spikes ; calyx-glume 2-flowered, awnless , 
corolla-glume awnless. Pistillate flowers : 
calyx-glume 2-flowered ; corolla-glume 
awnless ; style 2-parted ; seed covered with 
the hone-like calyx. (Job's tear.) Ex. 
Ze'a. Staminate flowers : calyx-glume 2- 
flowered, awnless ; corolla-glume awnless. 
Pistillate flowers: calyx-glume 2-valved 
(number of valves increased by cultivation) ; 
style 1, very long, filiform, pendulous ; seed 
solitaiy, immersed in an oblong receptacle. 
(Indian corn.) S. 
Tra'gia. Staminate flowers : calyx 3- 
parted ; coi'oUa none. Pistillate flowers : 
calyx 5-parted; corolla none; style 3-cleft; 
capsule tricoccus, 3-celled ; .seed solitary. S. 
[Grasses found in class 3d vary into this or" 
der.] 
ORDER IV. TETRANDRIA, TO ORDER VI. 
HEXANDRIA. 
Ai/'nus. Staminate flowers : ament com- 
po.sed of wedge form, truncate, 3-flowered 
receptacles ; calyx a scale, 3-lobed ; corolla 
4-parted. Pistillate flowers : calyx 2-flow- 
ered scales, somewhat 3-cleft ; corolla 0 
seed compressed, ovate, wingless, (alder.) 
Eriocau'lon. Involucre many-leaved, 
