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Geography Natives of the northern parts of the world, inhabiting groves 

 and thickets. 

 Properties Unknown. 

 Example. Circoea. 



L HYDROCARYES. The Water Chestnut Tribe. 



Hvdrocabyes, Link Enum. Ilort. Bcr. 1. 141. (1S21.)— Onaguarije, § Hydrocaryes, Dec. 



Prodr. 3. 63. (1828.) 



Diagnosis. Polypetalous dicotyledons, with definite perigynous stamens, 

 concrete carpella, an inferior ovarium with definite pendulous ovules, no albu- 

 men, and very unequal cotyledons. 



Anomalies. 



Essential Character.— Caty.r superior, 4-parted. Petals 4, arising from the throat of 

 the calyx. Stamens 4, alternate with the last. Ovarium 2-celled ; ovules solitary, pendulous; 

 style filiform, thickened at the base ; stigma capitate. Fruit hard, indehiscent, 1-celled, 

 1-seeded, crowned by the indurated segments of the calyx. Seed solitary, large, pendulous; 

 albumen none : cotyledons 2, very unequal.— Floating plants. Lower leaves opposite, upper 

 alternate; those under water cut into capillary segments; petioles tumid in the middle. 

 Flowers small, axillary. 



Affinities. Closely akin to Onagrarise, from which they are distinguished 

 by their solitary pendulous ovules ; more closely allied to Haloragese, from 

 which they are divided only by their very large seeds with unequal cotyledons, 

 developed calyx, and want of albumen ; agreeing with them, especially with 

 Myriophyllum, in habit. 



Geography. Found in the South of Europe, the East Indies, and China, 



Properties. The great seeds are sweet and eatable. 



Example. Trapa. 



LI. LOASEiE. 



Loaseje, Juss. Ann. Mus. 5. 18. (1S04); Diet. Sc. Nat. 27. 93. (1823); 

 Sp. 6. 115. (1823) ; Dec. Prodr. 3. 339. (1828.) 



Kunlh in Nov. Gen. et 



Diagnosis. Polypetalous dicotyledons, with perigynous stamens, part of 

 which are sterile, concrete carpella, an inferior 1-celled ovarium with parietal 

 placentae, and dissimilar petals and sepals. 



Anomalies. Ovarium sometimes almost superior. Seeds definite in Ment- 

 zclia and Klaprothia. 



Essential Character. — Calyx superior or inferior, 5-partcd, persistent, spreading in aesti- 

 vation. Petals 5 or 10, arising from within the recesses of the calyx, cucullate, with an in- 

 tlcx valvate aestivation ; the interior often, when present, much smaller than the outer, and 

 truncate at the apex. Stamens indefinite, in several rows, arising from within the petals, either 

 distinct or adhering in bundles before each petal, within the cavity of which they lie in {esti- 

 vation ; filaments subulate, unequal, the outer ones frequently destitute of anthers. Ovarium 

 inferior, or nearly superior, 1-ccilcd, with several parietal placenta;, or with one free central 

 lobed one ; style single; stigma 1, or several. Fruit capsular or succulent, inferior or supe- 

 rior, 1-cclled, with parietal placenta; originating at the sutures. Seeds numerous, without aril- 

 lus; embryo lying in the axis of fleshy albumen, with the radicle pointing to the hilum, and 

 flat small cotyledons. — Herbaceous plants, hispid, with pungent hairs secreting an acrid juice. 

 Leaves opposite or alternate, without stipula, usually more or less divided. Peduncles axilla- 

 ry, 1 -flowered. 



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