UTATUEAL OEDEKS* 
281 
pendulous. Drujpe bacca!«e. Seed solitary; embryo large m 
sparing albumen. 
Genus. — I^yssa, 
512. LoRANTiiACE^, the Mistletoe Tribe.-^Shruhs^ usually 
parasitical. Leaves opposite, coriaceous, entire. Flowers dioe- 
cious. Sepals 4-8, distinct or united. Stamens as many as the 
Bepals.; and opposite them. Ovary 1-celled ; ovules with a 
naked nucleus. Fruit a berry, 1-celled. Seed solitary ; emr- 
hryo small in the axis of fleshy albumen. 
a. Properties : the berries contain a viscid matter like bird-lime ; the bark ia 
astringent. 
Genus. — Viscum. 
513. Ulmace^, the Elm Tribe. — Trees or shrubs. Leaves 
alternate, rough, stipules deciduous. Flowers in loose clusters. 
Calyx campanulate, 4 or 5 cleft, irregular, imbricated in aesti- 
vation. Stamens definite, inserted into the base of the calyx. 
Ova/ry 1 or 2 celled ; ovule solitary, pendulous. Fruit a samara 
or drupe. Seed with little or no albumen ; embryo straight or 
curved. 
Genera. — Celtis, Ulmus, Planera. 
514. Saukukace^, the Lizard-tail Tribe. — Herbs gj'owing in 
marshy places. Leaves alternate, entire, stipulate. Flowers 
growing in spikes, destitute of floral envelopes. Stam-ens defi- 
nite. Ovary consisting of from 3 to 5 more or less united car- 
pels. Fruit a capsule or berry. Seeds 1 in each cell ; e^mbryo 
minute, lying in the persistent embryo-sac at the base of the 
albumen. 
Genus. — Saururus. 
515. Piper ACE^, the Pepper Tribe. — Shrubs or herbs ^ with 
articulated stems. Leaves opposite or verticillate. Flowers 
spiked or racemose. Stamens 2 or more, arranged on one side, 
or round the ovary. Ovary simple, 1-celled; ovule solitary, 
erect. Fruit a berry. Seed erect ; embryo lying in a fleshy 
sac outside the albumen at the apex of the seed. 
a. Properties: pungent, aromatic, stimulant. 
Genus. — Piper. 
516. Ceratophyllace^, the Hornwort Tribe. — Aquatic herbs. 
Leaves verticillate, cut into filiform lobes. Flowers monoecious. 
Calyx many-parted. Stamens indefinite; anthers sessile, 2- 
celled. Ovary free, 1-celled ; ovule solitary, pendulous ; stigma 
filiform. Fruit a 1-celled nut, terminated by the hardened 
stigma. Seed exalbuminous ; cotyledons 2 (appai ently 4), with 
a manifest plumule. 
Genub. — Cerutophyilam. 
