UMBELLIFEILE. (PARSLEY FAMILY.) 155 
II. Inner face of the seed hollowed out lengthwise, or the 
margins involute. (Umbels compound.) 
21. Chjerophyllum. Fruit linear-oblong, narrowed at the apex. 
22. Osmorrhiza. Fruit linear-club-shaped, tapering below. 
23. Conium. Fruit ovate, flattened at the sides : ribs wavy. 
24. Eulophus. Fruit ovoid, somewhat twin, nearly ribless. 
III. Inner face of the seed hollowed in the middle, or the 
margins curved inwards at the top and bottom. 
25. Erigenia. Fruit twin ; carpels nearly kidney-form. Umbellets 
few-flowered. 
I. HYDROCOTTLE, Tourn. Marsh Pennywort. 
Calyx-teeth obsolete. Fruit flattened laterally, orbicular or 
shield-shaped ; the carpels 5-ribbed, two of the ribs (the lateral) 
enlarged and often forming a thickened margin : oil-tubes none. 
— Low and smooth marsh perennials, with slender stems creeping 
or rooting in the mud, and round shield-shaped or kidney-form 
leaves. Flowers small, white, in simple umbels or clusters, which 
are either single or proliferous. (Name from v8<op, water , and 
KOTikr), a bowl or flat cup, the peltate leaves of several species be¬ 
ing somewhat cup-shaped.) 
* Stems spreading and branching : umbels and flowers nearly sessile. 
1. H. American^ L. Leaves rounded kidney-form, doubly 
crenate, somewhat lobed; flowers 3-5 together in sessile clusters; 
fruit orbicular. — Shady springy places. June - Aug. — Branches pro¬ 
longed and slender, runner-like. Leaves very thin. 
* * Umbels on scape-like naked peduncles arising , with the leaves, from 
the joints of the prolonged creeping and rooting stems. 
2. H. ranuncnloldes, L. Leaves round-reniform, 3-5- 
deft, the lobes crenate; peduncles much shorter than the petioles; 
umbel 5 -10-flowered; pedicels very short; fruit orbicular, scarcely 
ribbed. — Penn, and southward. 
3. BL ilftterrapta, Muhl. Leaves peltate in the middle, or- 
bicular-crenate; peduncles about the length of the leaves, bearing 
dusters of few and sessile floicers interruptedly along its length ; 
fruit broader than long, and notched at the base. — New Bedford, 
Massachusetts : common in the S. States. 
4. H. umbellata, L. Leaves peltate in the middle, orbicu¬ 
lar, notched at the base, doubly crenate; peduncle elongated, bearing a 
single many-flowered umbd (sometimes proliferous with 2 or 3 um- 
