PL ex. cal. 45. UMBELLIFER^. 277. Sium. 507 



Shim pusillurn foliis variis. Rail Syn. 212, 6. 

 Sison innndatiim, Lin. S. P. 363. 

 Hydrocotyle inundatum, Smith Fl. Brit. 290. 

 Least water-parsnep. Floating white-root. 



Standing water and inundations; annual; May. 



Stem floating ; leaves decompound : upper leaflets oblong, 

 3-cut or pinnate; umhells 2-cut, peduncled, opposite to 

 the leaves ; umbellules 5-flowered. 



XIII. 278. HYDROCOTYLE. TonxneUIarsh-penvywort. 

 Umhells simple, pedicelled ; involucrum 'i or ^-leaved ; 



calyx ; petals 5, lanceolate, equal ; lacinule inflexed, acute ; 

 fruit orbicillar, compressed sideways, gibbous; akenium 

 circular, lenticular ; edge thin ; ribs 3, blunt ; vallecules 

 very broad. 



Hydrocotyle vulgare. Common marsh-pennywort. 



iLeayei peltate, orbicular, crenate; umhells 5 or 8-flowered. 



Hydrocotyle vulgaris, Raii Syn. 222, 1 ; Lin. S. P. 338. 

 Cotyledon palustris, Ger.em. 529, 5. 



Water pennywort. Sheepkilling pennygrasse. Pennyrot. White rot. 

 Flowkwort. 



Bogs and watery places ; perennial ; May and June. 



Stem creeping; leaves opposite, petioled, limb horizon- 

 tal, pale green, shining ; peduncles axillary, solitary, or in 

 pairs ; hractece 2, ovate, scariose ; umhells often proliferous. 

 — Supposed to render sheep dropsical, or rot them. 



XIV. 279. CICUTA. Pliny. Cow-lane. 

 Ifwolucrum 0, or few-leaved ; involuceUa many-leaved ; 



calyx 5-toothed ; petals reverse ovate, heartshape ; lacinule 

 lanceolate, pointed ; fruit roundish, crowned ; akenium 

 ovate, semiglobose, beaked ; ribs 5, torulose ; dorsal valle- 

 cules convex, 1-vittated ; commissural 2-vittated, in a mem- 

 brane ; spermapodium 2-parted ; spermapodophore very 

 short, within the base of the akenia. 



Cicuta virosa. Poisonous cowhane. 



Leaves pinnate ; leaflets bald, lanceolate, serrate ; umhells 

 opposite to the leaves ; fruit 2-globular. 



Sium alterum olusatri facie, Raii Syn. 212, 1 ; Ger. em. 256, 4. 



Sium majus alterum angustifolium, Park. 1241. 



Cicutaria, Rivinns Pent. reg. 



Cicuta virosa, Lin. S. P. 366. 



Cicuta aquatica, De Cand. Fl. Gall. 3438. 



Coriandrum Cicuta, Roth Germ. ISO. 



Long-leaved -watcrcrcsses. Long-leaved water-hemlock. Water cowhane. 



