4 LXVIII. UMBELLIFERE (HIERN). | Hydrocotyle. 
1. H. Bonariensis, Lam.; DC. Prod. iv. 60. Glabrous. Stem 
creeping, usually rooting at the nodes. Leaves peltate, suborbicular, 
doubly crenate or dentate, many-veined (14 or 15), often notched at 
base, varying from less than an inch to nearly five inches across; pe- 
tioles solitary, or rarely two together, long, erect, varying in length from 
an inch toa foot; stipules short, wide, entire, caducous. Umbels 
umbellate and umbellately branched with rays interruptedly whorled, 
many-flowered, on erect peduncles longer than the petioles, and some- 
times above a foot high. Ultimate pedicels short, distinct. Involucre 
of many small lanceolate leaves, at every division of the umbel. Flowers 
moneecious or polygamous, with green calyx and elliptic white petals, 
inflexed at the apex and valvular in bud. Styles shorter than the fruit 
and diverging. Fruit shortly suborbicular, emarginate and subcordate 
at the base, about ;!; in. wide; secondary ridges none.—H. petiolaris, 
DC. Le. 
Upper Guinea. Niger, Barter! Vogel! Ansell! Camaroons mountains, Jann! 
Fl. and fr. June; 2-3 ft. high. . 
Mozamb. Distr. Zambesia, Dr. Kirk! Fr. Nov. and Dec. 
Also in Mauritius, Madagascar, and hotter parts of America. 
In damp places or by river banks. 
2. Hl. americana, Linn. ; DC. Prod. iv. 64. Var. 8. monticola, Hook. 
J. (sp.) Journ. Linn. Soc, vii. 194. Very small, with slender, creeping, 
elongated, and interlacing stems, 2—4 in. long, quite glabrous, except 
that the leaves beneath are sometimes pilose about the insertion of the 
petiole. Leaves orbicular, with 6-9 crenate shallow lobes, about 4 in. 
in diameter, with a sinus closed or nearly so extending quite up to the 
petiole, Petioles }—-} in. long, solitary or occasionally 2 together; 
stipules rather large. Umbels subsessile, 2-4-flowered, with very short 
pe icels. Peduncles ,';—,'5 in. long, solitary. Involucre consisting of 
inear bracts ; pet's valvular in bud; styles rather short. Fruit with 
acutely marked primary ridges and without secondary ridges, about 
2; in. wide. , 
Upper Guinea. Fernando Po, 8500 ft. alt., Mann! 
_ Differs from the tropical form of the species by its smaller size and by its compara- 
tively larger stipules. P 
Var. y. minima, Hochst. (sp.) in A. Rich. Fl. Abyss. i. 319. Glabrous, 2-3 in. 
long. Leaves minu 1 in. in di i : 
long. Leavy nute, about +5 in. in diameter, 5-veined. Peduncles very short, bearing 
3 or 4 sessile flowers. 
4 Wile Land. reeane 110,000 ft. alt., fr. Feb., Schimper! Ferret and Galinier; 
.end of Feb. orm with monecious flowers: mal i i ‘ F 
female apetalous (?); stigma capitate.) ale reddish with 8-4 stamens; 
The species occurs also in North and South America, New Zealand, Natal, &c. 
3. Hi. javanica, Thunb. ; DC. Prod. iv. 67. Glabrous perennial 
sarmentose with erect branching shoots, more than 6 in. hich Leaves 
suborbicular, membranaceous, alternate, 9-lobed, divided at the base u 
to the insertion of the petiole; lobes rounded, divided to about down, 
crenate-serrate, 1}—2 in. broad; petioles erect, longer than the readth 
of the leaves; stipules rather wide, entire ; peduncle shorter than the 
