T ANIOPLEURUM. UMBELLIFERZ. £69 
HYDROCOTYLE. 
33 TASNIOPLEURUM C.& R. Bot. Gaz. Nov. 1889. 
Smooth erect herbs, from a fascicle of thickened fibers, with 
ternate-pinnate leaves, toothed leaflets, involucre and involuceis 
‘of numerous ‘conspicuous bracts and white flowers. Calyx-lobes 
prominent. Fruitoblong, glabrous flattened latterly. Carpel with 
broad, salient ribs. Stylopodium prominent and conical. Oil- 
tubes solitary in the intervals, very large, two on the commis- 
sure. Seeds dorsally flattened, sulcate beneath the oil-tubes, 
becoming loose in the pericarp, and invested by a layer of secret- 
ing cells. 
T. Howellii C & R. 1. c.. Stems rather stout, 3-4. feet high, leaves 
few, ternate then once or twice pinnate; leaflets lanceolate to ovate, 
strongly toothed or lobed; umbels many-rayed, with involucre of long nar- 
rowly oblanceolate bracts and invyolucels of prominent lanceolate scarious- 
margined bractlets; ray 1-3 inches long; pedicels 3-5 lines long. Wet 
places Grants Pass, Oregon. 
34 CICUTA L. Gen. n. 354. 
Tall branching glabrous perennial herbs with pinnately or 
ternately compound leaves, involucre small or wanting, involu- 
cels of several small bractlets and many-rayed umbels of small 
flowers. Calyx-lobes rather prominent. Fruit oblong to nearly 
orbicular, glabrous. Stylopodium conical. Carpels with strong 
flattish corky ribs, the laterals the largest. Seed nearly terete, 
or somewhat dorsally flattened, with plane face. Oil-tubes soli- 
tary in the intervals, 2 on the commissure. 
C. occidentalis- Greene Pitt. ii, 7. Stem stout, 3-6 feet high, green, 
scarcely glaucous, paniculate from toward the base: leaves bipinnate; leaf- 
lets 2-3 inches long, narrowly lanceolate, coarsely serrate: umbel many- 
rayed; involucre usually wanting; involucels of few narrow lanceolate 
bractlets: rays 1-4 inches long; pedicels 2-4 lines long: fruit broadly ovate 
to oval, the lateral ribs much larger than the others: oil-tubes broad and 
conspicuous, the commissural pair contiguous. In marshes and wet 
places. Alaska to California and the Rocky Mountains. 
C. purpurata Greenel. c. 8. Stems3-4 feet high, purple glaucous, con- 
spicuously striate, panicnlate from the middle: leaves bipinnate; leaflets 
ovate-lanceolate, 1-2 inches long closely and often deeply serrate, the teeth 
a little faleate; umbels many, long peduncied: involucre and involucels 
wanting or deciduous: flowers dull and ineonspicuous: fruit orbicular, ribs 
of the carpels broad and low: oil-tubes small. Springy and boggy places 
near Cle Elum, Washington. 
C. vagans Greene 1. c. Stem branching from the very base, the 
branches diffuse or reclining, 3-5 feet long, abundantly floriferous: herbage 
purplish or glaucous: radical leaves 2 feet long bi- or tri-pinnate; leaflets 
2-inches long, lanceolate, somewhat cuneate below and entire, but from 
below the middle bearing rather remote short but salient serrate teeth: 
flowers dull, fruit orbicular; the ribs very broad and low; oil-tube small, 
cross-section of seed nearly reniform. Borders of Lake Pend d’Oreille, Idaho. 
35 HYDROCOTYLE Tourn. 
Low perennial herbs growing in water or wet places with slen- 
