64 
CLASS XIX. ORDER IV, 
CLASS XIX. MONGECIA. 
ORDER I. MONANDRIA. 
Zoste'ra. Stamens and pistils inserted in 2 rows upon one side of a spadix ; 
spatha foliaceous. Statninate flowers with the anthers 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. Pistillate 
flowers: calyx and corolla wanting; style filiform ; stigma 2- cleft ; capsule 1- 
seeded ; flowers axillary, (river-nymph.) 
Zannichel^lia. Staminate flowers : calyx and corolla wanting. Pistillate 
flowers : perianth single of 1 leaf ; ovaries 4 or more ; style 1 ; stigma peltate ; 
capsule sessile. 
EuPHOR^BiA. Rarely a perianth ; involucre monophyllous, campanulate 8 to 
10-toothed, the inner segments membranaceous. Staminate flowers 12 or more ; 
calyx and corolla generally wanting. Pistillate flowers : solitary, central, stipi- 
tate; 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; stigina funnel-form; capsule 1- 
celled. from 1 to 5-seeded. (duck's meat ) 
ORDER III. TRIANDRIA. 
Ty'pha. Amenl cylindric, dense-flowered. Staminate flowers : calyx obsolete. 
3-leaved ; corolla 0 ; stamens 3 together, on a chaffy or hairy receptacle, united 
below into 1. Pistillate flowers : below the staminate, calyx 0 ; corolla 0 ; seed 
1, pe^ircelled; the pedicels surrounded at the base with long hairs resembling 
egret, (cat-tail, or reed mace.) 
Ca'rex. Aments imbricate, usually in cylindric spikes. Staminate flowers: 
calyx-scales single ; corolla 0. Pistillate flowers : calyx-scales single ; corolla 
inflated, monopetalous, 2-toothed at the apex ; stigmas 2 or 3 ; nut 3-sided, en- 
closed in the inflated, permanent corolla, which becomes an utriculus-like, per- 
manent aril ; sometimes dioecious, (sedge.) 
Compto'nia. Staminate flowers : ament cylindric, with calyx-scales 1-flower- 
ed; corolla 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, awn- 
less; corolla-glume awnless. Pistillate flowers : calyx-glume 2-flowered ; corol- 
la-glume awnless; style 2-parted ; seed cov^ered 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, very long, filiform, pendulous; seed solitary, immersed 
in an oblong receptacle. (Indian corn.) S. 
ORDER IV. TETRANDRIA. 
Al'nus. Staminate flowers: ament composed of wedge-form, truncate, 3-flow- 
ered receptacles; calyx a scale, 3-lobed; corolla 4-parted. Pistillate flowers: 
calyx 2-flowered scales, somewhat 3-cleft ; corolla 0; seed compressed, ovate, 
wingless, (alder.) 
Ur"tica. Staminate flowers : calyx 4-leaved ; corolla 0 ; nectary central, 
cyathiform. Pistillate flowers : calyx 2-ieaved, 2-valved ; corolla 0 ; seed 1, 
glossy, (nettle.) 
Mo'rus. Staminate flowers : calyx 4-parted ; corolla 0, Pistillate flowers : 
calyx 4-leaved; corolla 0 ; styles 2, calyx becoming berry-like ; seed 1. (mul- 
berry.) S. 
Bux'us. Staminate flowers: calyx 3-leaved; petals 2. Pistillate flowers; 
calyx 4-leaved ; petals 3 ; styles 3. (box.) Ex. 
Amaran^'thus. Staminate flowers : calyx 3 or 5-leaved ; corolla 0; stamens 3 
or 5. Pistillate flowers : calyx and corolla as the staminate ; styles 3 ; capsule 
1-celled, opening transversely ; seed 1. (amaranth, red cockscomb.) 
Ambro'sia. Staminate flowers: common calyx 1-leaved ; anthers in contact 
but not united ; corolla I jietalled, "5 cleft, funnel-form ; receptacle naked Pis- 
