White-Rot.
HYDROCOTYLE Linn. Gen. PI. Pentandria Digynia.
Umbella fimplex: Involucre 4-phyllo. Petala integra. Semina
femiorbiculato-comprefla.
Rail Syn. Gen. 11. Umbelliferæ Herbæ.
HYDROCOTYLE vulgaris foliis peltatis, umbellis quinquefloris. Linn. Syfi.Vegetab. p. 271. Sp.
PL p. 338. Fl. Suef. n. 234.
HYDROCOTYLE foliis rotundis emarginatis, petiolis centralibus, umbellis faftigiatis. Hall. Hiß. 812.
RANUNCULUS aquaticus, cotyledonis folio. Bauh. Pin. 180.
COTYLEDON paluftris. Ger. emac. 350. Parkinf. 1214.
HYDROCOTYLE vulgaris. Inß. R. H. 328. Raii Syn. p. 222. Marfh Pennywort, or White-Rot.
Hudf. Fl. Angl.ed. 2. p. 110.
IBICES perennes, capillaceae, albidae. f ROOTS perennial, capillary, whitifh.
ftULES repentes, teretes, glabri, ad genicula radi- J STALKS creeping, round, fmooth, ftriking root at the
® cantes. f joints.
IA loiigitudine et latitudine vix pollicaria, longe || LEAVES in length and breadth about an inch, ftand-
notmlat-a neltata. orbiculata. reoanda aut a ing on long footftalks inferted into the centre
petiolata, peltata,orbiculata,repanda $
iublobata, crenulata, centro nonnihil de- |
preffa, punftoque albido notata, utrinque |
venis anaftamofantibus reticulata, glaberrima, f
nitentia, læte'viridia. Petioli fubbipollicares, Y
erefti, teretes, glabri, inferne nudi, fuperne §à
pilis fetofis, horizontalibus, diftantibus, hif- |
piduli. $
of the leaf, orbicular, waved or fomewhat
lobed and notched on the edge, die centre a
little depreffed, and marked with a white
dot, veins anaftamofing and forming a kind
of net-work on each fide the leaf, perfectly
fmooth, glofly, and of a bright green colour.
The Leaf-Stalks about two inches long, upright,
round, fmooth, naked below, above
befet with briftly, horizontal, diftant hairs.
LORES parvi, glomerati, albi, aut fubrubelli, pro- $ FLOWERS fmall, in clutters, white or reddilh, pro-
pe terrain e repente caule ad axillas petiolo- § . ceeding from the creeping ftalk near the
rum prodeuntes. f ground out of the alae of the leaf-ftalks.
ttDUNCULI communes folitarii, vix ultra pollicares,.? GENERAL PEDUNCLES Angle, little more than an
erefti, teretes, piloftufculi, in glomerulis aut | inch in length, upright, round, flightly hairy,
verticillis potius quam umbellulam termi- % producing little balls or whorls rather than
nantes. Stipuhe duae, fubrotundse, membra- | terminating in an umbel of flowers. Stipula
naceae, alb®, ad balm cujufvis pedunculi. | two, roundilh, membranous, white, at the
| bafe of each peduncle.
jLOSCULI 5, ad 9, fertiles, exigui, breviffime pedi- | FLORETS from 5 to o, very fmall, Handing on very
cellati. Foliolum minutum, lineari-fubulatum, | Ihort foot-ftalks, a very minute leaf, narrow
fingulo flofculo fubjeSum. v and tapering, placed under each floret.
SR1ANTHIUM propriuni vix ullum. | PERIANTHIUM of each floret fcarcely any.
tOROLLA pentapetala, linearis diametro, Petala i COROLLA pentapetalous, a line in diameter, the
1 ovata, acuta, integra, patentia, pallide rofea, ♦ Petals ovate, pointed, entire, fpreading,
_ jig-A, 2, null. | of a pale rofe colour, jig. 1, mcignif. Jig. 2.
[STAMINA: Filamenta 5, fubulata, albida, corolla 0 STAMINA: 5 Filaments, tapering, whitifh, (hotter
breviora. A ntherjE minimae, albae, fig. 3. ^ than the corolla: A n thers very fmall and
| white, fig. 3. . , .
sISTILLUM: Ge-rmen inferum, ereftum, compref- | PISTILLUM: G ermen beneath the corolla upright,
fum, orbiculatum, fubtrigonum, jig. 4. cor- | flattened, orbicular, fomewhat three-cornered,
piifculo fungofo, flavo, coronatum; Sty li \ fig. 4. crowned with a yellow fungous fubduo,
fubulati, breviflimi; Stigmata obtu- | fiance; Styles two, tapering, very Ihort;
fiufcula, alba, fg . 5. § Stigmata bluntifti, white, fig. 5.
tERICARPIUM nullum : F r u c t u s orbiculatus, com-| SEED-VESSEL none, F r u i t orbicular, flattened,
1 preffus, bipartibilis. r f fplitting in two.
SEMINA duo, orbiculata, comprefla, pallide fufca. | SEEDS two, orbicular, flattened, of a pale brown
colour.
I The name of White-Rot has been given to this plant, from an idea of its being the caufe of the rot in ftieep,
|n opinion founded we apprehend more on conjeclure than experiment; the real caufe of that difeafe is we
[ear yet to be difcovered, and will not be found perhaps to arife from their feeding on any particular plant.
I It is extremely common on all boeffv around near London, and we believe in every part of Great-Britain. It
r wers in July and Auguft. ™ *
| The fruftification of this plant, which proves it truly to be related to the umbelliferi, is rarely feen without a
||p examination, being ufually hidden by the leaves, but as it is plentifully produced, it may readily be
|covered at the proper feafon.
The leaf affords an excellent example of what L innaeus calls the folium peltatum.