714 
LX. UMBELLIFERyE. 
Series IT. Haplozyerim. — Fruit slightly nr not compressed. Carpels with .5 prominent ribs 
mid usually 1 ritta under each furrow. 
Tribe III. Ammineae. — Fruit laterally compressed : commissure constricted or silicate. 
Leaves entire. Flowers greenish-yellow. Seeds tapering, convex, liattish in 
front 7 .*Bupleuru5I. 
Leaves dissected. Umbels pedunculate, and the general involucre of a few 
dissected bracts II.* Ainu. 
Constricted at the commissure. Seeds terete 10. Sum. 
Tribe IV. Seselinese. — Cross section of the fruit circular or nearly so, or the .ncricarj 
slightly dorsal : commissure broad. 
Fruit with all the ridges equal, broad, obtuse, corky 11 (Enaxthe. 
Umbels simple. Small creeping glabrous plant with linear tufted entire 
leaves. Albumen terete *...■. 12. Crantzia. 
Umbels compound. Fruit-ribs obtuse ; commissure of the fruit narrow. 
Seeds terete 8. Apium. 
Series III. Diplozyg'iae. — Fruit scarcely compressed, densely covered with bristles pro- 
ceeding from four prominent secondary ribs on each carpel, with single vittee under the ribs. 
I'rimanj ribs inconspicuous. 
Tribe V. Caucalineit. — Fruit subtercte, or l ih rally bul slightly, or ilorsally more largely 
compressed. 
Fruit glabrous, globose. Bracts none . 13 .*Coriandrum 
Fruit hirsute or setose. Bracts pinnate. Seeds plane on the inner face . . 14 Daucus. 
1. HYDROCOTYLE, Linn. 
(From the cup-shaped form of the leaf of some European species.) 
Calyx-teeth minute or inconspicuous. Petals entire, acute, valvateor imbricate. 
Disk flat, with a raised annular or cup-shaped margin. Fruit laterally com- 
pressed, without vittfe, often didyinous, carpophore deciduous with the carpels or 
persistent ; carpels with the dorsal rib prominent, the lateral ribs concealed in 
the commissure, or distinct and prominent or rarely combined in one prominent 
rib, the intermediate ribs usually prominent, straight, curved or short and semi- 
circular ; secondary ribs very rarely conspicuous. Seed straight, laterally 
compressed. — Herbs, either prostrate and rooting at the nodes or erect and 
annual. Leaves either orbicular, peltate or deeply cordate and entire or divided, 
or euneate at the base and divided. Stipules scarious, often toothed or jagged, 
especially in the annual species. Flowers small, sometimes unisexual, in simple 
umbels or also verticillate on the peduncle below the terminal umbel, white or 
rarely purplish. 
The genus is dispersed over the warmer and temperate regions of the globe, most frequent in 
moist situations or floating in water. — Benth. 
Section’ I. Euhydrocotyle. — Leaves orbicular and peltate or deeply cordate, or divided 
to the base into 3, o or more segments. Petals valvate. Carpels with the intermediate ribs alone 
prominent on each side or rarely with the lateral ones also distinct and prominent. 
Stems creeping and rooting, at least at the lower joints. Carpophore 
deciduous with the carpels. 
Fruits more or less didymous, the carpels convex on the sides, the dorsal 
edge obtuse. 
Leaves orbicular, peltately attached by the centre H. vulgaris. 
Leaves rounded or reniform-cordate with a deep sinus at the insertion of' 
the petiole, crenate or lobed but not divided to the base. 
Fruits nearly sessile in the head. Diffuse plants with distinct flower- 
ing nodes. Stipules not imbricate H. liirta. 
Fruits distinctly pedicellate in the umbel. 
Flowering-stems ascending or erect. Leaves more or less hirsute 
and lobed. Fruit 1 line broad 3 . H. laxiflora. 
Flowering-stems slender and diffuse. Leaves glabrous, scarcely 
lobed. Fruit § line broad on long slender pedicels 4. H. pedicellosa. 
Leaves divided to the base into 3 or 5 lobes 5, H. tripartita. 
