Hydrocotyle Vulgaris. Marsh Pennywort, 01 
White-Rot. 
HYDROCOTYLE Linn. Gen. PL Pentandri* Digynia. 
Vmbella f.mplex: Imoluiro 4 -phyllo. PetaU integra. Semina 
femiorbiculato-comprefla. 
Raii Syn. Gen. ll. Umeelljeera! Herb.*. 
HYDROCOTYLE vulgaris foliis peltatis, umbellis quinquefloris. Lmn. Syft. Vegetab. p. 271. Sp. 
PI. p. 338. FI. Suec. n. 234. 
HYDROCOTYLE foliis rotundis emarginatis, petiolis centralibus, umbellis falligiatis. Hall. Hiji. S12. 
RANUNCULUS aquaticus, cotyledonis folio. Bauh. Pin. 180. 
COTYLEDON paluftris. Ger. emac. 350. Parkinf. 1214. 
HYDROCOTYLE vulgaris. Inft. R. H. 328. Raii Syn. p. 222. Marlh Pennywort, or White-Rot. 
Hud/'. F 7. Angl. ed. 2. p. HO. 
RADICES perennes, capillacea, albida:. 
CAULES repentes, teretes, glabri, ad genicula radi- 
cantes. 
FOLIA longitudine et latitudine vix pollicaria, longe 
petiolata, peltata, orbiculata, repanda aut 
fublobata, crenulata, centro nonnihil de- 
prefla, pun&oque albido notata, utrinque 
venis anaftamofantibus reticulata, glaberrima, 
nitentia, laute viridia. Petioli fubbipollicares, 
eretti, teretes, glabri, inferne nudi, fuperne 
pilis fetofis, horizontalibus, diftantibus, hif- 
piduli. 
FLORES parvi, glomerati, albi, aut fubrubelli, pro- 
pe terram e repente caule ad axillas petiolo- 
rum prodeuntes. 
PEDUNCULI communes folitarii, vix ultra pollicares, 
erefti, teretes, pilofiufculi, in glomerulis aut 
verticillis potius quam umbellulam termi- 
nantes. Stipula duas, fubrotunda:, membra- 
naceae, albas, ad bafin cujufvis pedunculi. 
FLOSCULI 5, ad 9, fertiles, exigui, breviflime pedi- 
cellati. Foliolum minutum, lineari-fubulatum, 
fingulo flofculo fubjeftum. 
PERIANTHIUM proprium vix ullum. 
COROLLA pentapetala, linearis diametro, Petala 
ovata, acuta, integra, patentia, pallide rofea, 
fig. 1, 2, audi. 
STAMINA: Filamenta 5, fubulata, albida, corolla 
breviora. Anthers minimas, albae, fig. 3. 
PISTILLUM: Germen inferum, ereftum, compref- 
fum, orbiculatum, fubtrigonum, jig. 4. cor- 
pufculo fungofo, flavo, coronatum ; Styli 
duo, fubulati, breviflimi; Stigmata obtu- 
fiufcula, alba, jig. 5. 
PERICARPIUM nullum : Fructus orbiculatus, com- 
preflus, bipartibilis. 
SEMINA duo, orbiculata, comprefla, pallide fufca. 
f ROOTS perennial, capillary, whitifh. 
I STALKS creeping, round, fmooth, ftriking root at the 
:> joints. 
> LEAVES in length and breadth about an inch, ftand- 
: ing on long footftalks inferted into the cen- 
tre of the leaf, orbicular, waved or fomewhat 
( lobed and notched on the edge, the centre a 
little deprefled, and marked with a white 
dot, veins anaftamofing and forming a kind 
> of net-work on each fide the leaf, perfectly 
fmooth, gloffy, and of a bright green colour. 
The Leaf-Stalks about two inches long, up- 
> right, round, fmooth, naked below, above 
befet with briflly, horizontal, diftant hairs. 
i FLOWERS fmall, in clufters, white or reddifli, pro- 
> ceeding from the creeping ftalk near the 
ground out of the alas or the leaf-ftalks. 
\ GENERAL PEDUNCLES Angle, little more than an 
i: 1 inch in length, upright, round, flightly hairy, 
producing little balls or whorls rather than 
terminating in an umbel of flowers. Stipula 
I two, roundifh, membranous, white, at the 
) bafe of each peduncle. 
I FLORETS from 5 to q, very fmall. Handing on very 
Ihort foot-ftalks, a very minute leaf, narrow 
? and tapering, placed under each floret. 
i PERIANTHIUM of each floret fcarcely any. 
[* COROLLA pentapetalous, a line in diameter, the 
l Petals ovate, pointed, entire, fpreading, 
\ of a pale rofe colour, fig. 1, magnif fig. 2. 
I STAMINA: 5 Filaments, tapering, whitifh, Ihorter 
than the corolla : Anthers very fmall and 
t white, fig. 3. 
\ PISTILLUM: Germen beneath the corolla upright, 
> flattened, orbicular, fomewhat three-cornered, 
l fig- 4- crowned with a yellow fungous fub- 
ftance ; Styles two, tapering, very Ihort; 
Stigmata bluntifh, white, //>. c. 
( SEED-VESSEL none. Fruit orbicular, flattened 
> fplitting in two. 
' SEEDS two, orbicular, flattened, of a pale brown 
> colour. 
1 he name of Whte-Rot has been given to this plant, from an ,dea of its being the caufe of the rot in Iheen 
an opinion founded we apprehend more on comefiure than experiment; the refl caufe of that difeafe i, we 
fear yet to be difcovered, and will not be found perhaps to arife from their feeding on any particular plant. 
flowi“ 1: aU b ° Sgy gr ° Und “ L0nd0n ’ a " d We bdieve “ -«7 P“t of Great-Britain. I, 
The fructification of this plant, which proves it truly to be related to the umbelliferi r 
dole examination, being ufually hidden by the leaves, but as it is plentifully produced kVa™ W1 ?i° Ut , 3 
dilcovered at the proper feafon. " ' proauced, it may readily be 
The leaf affords an excellent example of what LiNSXius calls the folium pelta, um. 
