282 UMBELLIFER Æ. 
of many parts of Europe, in ditches and rivulets ; plentiful in 
some parts of Britain. Sium nodiflòrum, Lin. spec. 361. Woodv. 
med. bot. 3. t. 182. Smith, engl. bot. t. 639. but not of the 
Flora Danica. Sison nodiflérum, Brot. fi. lus. 1. p. 423. Séseli 
nodiflorum, Scop. carn. 2. p. 353. Flowers white. There is a 
dwarf variety of this mentioned in D., C. fl. fr. 4. p. 300. which 
is hardly a finger in height; and a large variety, which grows 
even l4 foot high. This plant was formerly admitted into the 
London Pharmacopeeia, in the character of an antiscorbutic, or 
rather as a corrector of acrid humours, especially when mani- 
fested by cutaneous eruptions, and tumours in the lymphatic 
system. The best proofs of its efficacy are from Dr. Withering. 
A young lady was cured of a most obstinate cutaneous eruption 
by taking three large tea-spoonfuls of the juice twice a day ; and 
he has repeatedly given to adults 3 or 4 ounces every morning, 
in similar complaints, with the greatest success. It is not nau- 
seous, and children take it readily if mixed with milk. In the 
dose he has given it, it neither affects the head, the stomach, nor 
the bowels. This plant, therefore, if it should be eaten for 
water-cresses, does not seem to be very dangerous, or to require 
all that caution which Miller prescribes, to distinguish it from 
water-cresses. 
Var. B, ochreatum (D. C. prod. 4. p. 104.) stems rather creep- 
ing ; petioles membranous, and dilated at the base ; umbels on 
rather longer peduncles than those of the species ; involucrum 
permanent. 4%. W.H. Native of ditches and rivulets about 
Lugdun. Sium répens £, D.C. fl. fr. 4. p. 300. This variety is 
said to be intermediate between H. nodiflorum and H. répens. 
Var. y? radiatum (D. C. prod. 4. p. 105.) involucrum of one 
foliaceous, somewhat trifid leaf; leaves of involucel exceeding 
the flowers. %.W.H. Native of the north of Africa. Sium 
radiatum, Viv. fl. lyb. 1. p. 16. t. 9. f. 2. Tordylium Cyrena- 
icum, Spreng. syst. 1. p. 895. 
Knot-flowered Helosciadium. 
+ to 1 foot. 
3 H. re‘pens (Koch, l. c.) stem prostrate, rooting; leaves 
pinnate ; leaflets roundish, deeply toothed; umbels on long pe- 
duncles, opposite to the leaves; involucrum of 2-4 ovate-lan- 
ceolate permanent leaves. %. W. H. Native of France, Den- 
mark, and Germany. In Britain in boggy meadows, or on 
watery commons; on Bullington Green and Cowley Bottom, 
near Oxford ; on Coldham Common, Cambridgeshire ; on Gold- 
ington Green and Stevington bogs; at Fisher Row and on Guil- 
lon Links, near Edinburgh; and in ditches near Forfar. Sium 
répens, Lin. fil. suppl. 181. Fl. dan. 1514. Jacq. aust. 3. t. 260. 
Smith, engl. bot. t. 1431. Peduncles of umbels equal to the 
naked part of the petioles, which are in H. nodiflorum much 
shorter. Flowers white. 
Creeping Helosciadium. Fl. June, July. Britain. Pl. er. 
4 H.1nunpa‘tum (Koch, l. c.) stems creeping ; leaves pinnate: 
leaflets of the submersed leaves capillaceously multifid: those of 
the emersed ones cuneiform and deeply trifid; umbels opposite 
the leaves; peduncles bearing 2 rays or umbels, without an in- 
volucrum; umbellules 5-flowered. 2. W.H. Native of Europe, 
in marshes, bogs, ditches, pools, and wet ground over-flowed 
in winter; plentiful in some parts of Britain. Sium inundatum, 
Wigger’s, Holsat. p. 24. Hydrocétyle inundatum, Smith, fl. 
brit. 1. p. 290. Engl. bot. t. 227. Fl. dan. t. 89. Sison inun- 
datum, Willd. Méum inundatum, Spreng. umb. spec. 115.— 
Pluk. alm. t. 61. f. 3. Flowers white. 
Var. B, capillaceum (D. C. prod. 4. p. 105.) stems erect; 
leaves all capillaceously multifid. Schum. zeel. 1. p. 90. ex 
Schultes, syst. 6. p. 435. 
Jnundated Helosciadium, Fl. May, June. Britain. Pl. er. 
5 H. interme pium (D.C. prod. 4. p. 105.) root rather bul- 
bous, stoloniferous ; stem filiform, ascending ; leaves pinnate : 
1 
Fl. July, Aug. Britain. Pl. 
XLI. Hexosciapium. 
leaflets verticillate, short, trifid; umbels opposite the leaves, 
pedunculate, 4-5-rayed, involucrated. 2%. W. H. Native of 
France, near Dax, in inundated places. Sison verticillato-inun- 
datum, Thore, chl. land. p. 101. Sium intermédium, D.C. fl. 
fr. 4. p. 802. Slum bulbdsum, Thore, journ. bot. 1. p. 193. t.7. 
f. 2. but not of Poir. Helosciad. bulbésum, Koch, umb. p. 126. 
Flowers white. 
Intermediate Helosciadium. 
4 foot. : 
6 H. Carro'ryicum (Hook. et Arn. in Beech. bot. p. 148.) 
plant procumbent? leaves pinnate, with 8-11 ovate, acute, 
deeply serrated leaflets; lower leaflets pinnatifid or pinnate, with 
few leaflets; umbels lateral and terminal; involucra and invo- 
lucels of many leaves; styles elongated. %. B. H. Native of 
North California, and on the low moist soils of the Columbia. 
The plant has a good deal the habit of H. rèpens. Douglas 
says the stems are 2-3 feet high, from which expression 1t may 
be inferred that the plant is not procumbent. 
Californian Helosciadium. Pl. 2 to 3 feet. 
Fl. July, Aug. Clt. 1826. Pl. 
Secr. II. Cycrospr’rmum (from kurdoc, kyclos, a circle, and 
oreppa, sperma, a seed). Lag. am. nat. 2. p. 101. D. C. prod. 
4. p. 105. Both the involucra and involucels are wanting. Fruit 
quite glabrous. 
7 H. revropny’tium (D. C. mem. soc. genev. vol. 4.) plant 
glabrous, erectish or diffuse ; leaves many times ternately divid- 
ed: leaflets capillary : cauline leaves nearly sessile ; umbels op- 
posite the leaves, sessile or pedunculate, 2-3-rayed ; umbellules 
pedunculate. ©. H. Native nearly throughout the whole of 
America, especially in Chili, Mexico, St. Domingo, Brazil, and 
Louisiana. Sison A’mmi, Lin. spec. 363.2 Jacq. hort. vind. t. 
200. Schultes, syst. 6. p. 412. exclusive of Schaw. and Poir. 
synonymes. Cham. et Schlecht. in Linnza. 1. p. 386. Æthùsa 
A’mmi, Spreng. umb. prod. p. 22. Pimpinélla leptophylla, 
Pers. ench. 1. p. 324. Schultes, syst. 6. p. 390. Pimpinélla 
lateriflòra, Link, enum. 1. p. 285. exclusive of the synonymes. 
Heliosciàdium lateriflorum, Koch, umb. p. 126. Pimpinélla 
Domingénsis, Willd. herb. Æthùsa leptophylla, Spreng. p 
prod. 22. Nutt. gen. amer. 1. p. 190. Sìson fasciculàtum, Poh 
in litt. Pimpinélla capillacea, Poir. 1828. Anéthum pinnatum, 
Ruiz et Pav. in herb. Deless. A plant in Sieb. fl. nov. holl. 
exsic. no. 481. is apparently referrible to this species, as also 
Sison He'nkei, Presl, in herb. Henke. Flowers white. 
Slender-leaved Helosciadium. Fl. July, Aug. Clt. 1819. 
Pl. 1 foot. 
8 H. racnta`rum (D. C. mem. soc. genev. vol. 4.) plant gla- 
brous, erect; leaves many times ternately divided : leaflets cut, 
oblong-linear : cauline leaves all petiolate ; umbels sessile, opp 
site the leaves, 3-rayed, one-half shorter than the petioles. 
H. Native of Peru and of Chili, in stony pastures. Bertero, 
herb. no. 101. Poepp. no. 93. p. 281. Very like H. leptophyl- 
lum, but differs in the leaflets being broader, and in the petioles 
of the cauline leaves being much longer. Sison laciniatum; 
Lher. herb. in herb. Domb. 
Jagged-leaved Helosciadium. PI. 1 foot. 
9 H. ranuncunirorium (D. C. prod. 4. p. 105.) plant gla- 
brous, erect, dichotomous; lower leaves bipinnate: upper pin- 
nate and ternate, opposite; leaflets cuneated at the base, cut 
into acuminated lobes; umbels rising from the forks of the 
branches, on short peduncles. ©? W. H. Native of Chili, on the 
Andes in Rio Saladillo, in the province of Cordova; and about 
Conception. H. lateriflorum, Hook. et Arn. Some of the 
petals are entire, and some of them somewhat emarginate, from 
the point being bent in so much. Calyx obsolete. Fruit asi 
date at the base when young, more compressed, and less ribbe 
than in the rest. 
