868 CLASS XIX. 
Ensle'nia. Calyx smali, 5-parted, per- 
manent; corolla 5-partecl ; segments con- 
verging, erect; nectary S paited, 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 tlie top of the conic stigma; follicles 
in pairs, small. 
ORDER VI. HEXANDRIA. 
Ap.istolo'chia. Calyx 0 ; corolla supe- 
rior, 1-petalled, ligulate, inflated at the base; 
capsule 6 celled, many seeded, (birtliwort.) 
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. MON(ECIA. 
ORDER I. MONANDRIA. 
Zos'''tera. Stamens and pistils in.serted 
»n 2 rows upon one side of a spadix ; spatha 
foliaceous. Staminate flowers with the an- 
thers ovate, sessile, alternating with the 
gei-ms. Pistillate flowers with the germ 
ovate; style 2-cleft; drupe with 1 seed, 
(gi-ass-wrack.) 
Caui.in"ia. Staminate flowers : calyx 0; 
coroUa 0 , anthers sessile. Pistillate 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. Stamhiate flowers : 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 monophyllous, campanulate, 8 to 10- 
toothed, the inner segments membranaceous. 
Stamina* 3 flowers 12 or more; calyx and 
corolla generally wanting. Pistillate flow- 
ers : solitaiy, central, stipitate ; calyx and 
corolla G , capsule 3-lobed. (spurge.) 
order II. diandria. 
Lem^na. Staminate flowers : perianth of 
, leaf; stamens on the base of the germ. 
Pistillate flowers : perianth of 1 leaf ; stig- 
Dia funnel-form ; capsule l-celled, from 1 to 
5-seeded. (duck's meat.| 
Podos"temum. Staminate flowers: ca- 
Ijx 0 ; corolla 0 ; stamens affixed to a pedi- 
cel. Pistillate flowers : calyx 0 ; corolla 0 ; 
germ ovate ; stigma 1, sessile ; capsule 2- 
celled, 2 valved, many-seeded ; seeds mi- 
nute, (thread -foot.) 
ORDE/v III. TRIANDRIA. 
Ty'PHA. Ament cylindi-ic, dense-flower- j 
OEDER l\, 
ed. Staminate flowers : calyx obsolete, 8- 
leaved ; corolla 0 ; stamens 3 together, on 
a chaffy or hairy receptacle, united below 
into 1. Pistillate flowers : below the stam- 
inate ; calyx 0 ; corolla 0 ; seed 1, pedicel- 
led ; the pedicels surrounded at the ba.se 
with long liairs resembling egret, (cat- 
tail, or reed mace.) 
Sparga'nium. Ament globose. Stami 
nate flowers : calyx 3-sepalled ; corolla 0 
Pistillate flowers : calyx 3-sepalled ; co- 
rolla 0 ; stigma 2-cleft ; drupe juiceless, 1 
or 2-seeded. (burr-reed.) 
Scle'ria. Staminate flowers : glume 2 
or 6-valyed, many-flowered ; paleas awn- 
less. Pistillate flowers ; calyx 2 or 6-valv- 
ed. 1-flovvered ; paleus none ; stigmas 1 to 
3; not colored, sub-globose, (whip-grass.) 
Ca'kex. Aments imbricate,usually in cy- 
lindric 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 inflated, 
permanent corolla, which becomes an 
utriculus-like permanent aril ; sometimea 
dioecious, (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. 
surrounded by a 1-leafed 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 ; coroUa-glume 
awnless ; style 2-parted ; seed covered with 
the bone-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, veiy long, filiform, pendulous ; seed 
solitary, immersed in an oblong receptacle. 
(Indian corn.) S. 
Tra'gia. Staminate flowers : calyx 3- 
parted ; corolla 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. 
Al'^nus. Staminate flowers : ament com- 
posed 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, (aider j 
Eriocau'lon. Jnvolucie many leaved 
