152 FLORA OF TASMANIA. [Umbettifera. 
a. Leaves not lobed. Mericarps with two to three ribs on each side. 
1. Hydrocotyle Asiatica (Linn. Sp. PI. 234); pubescens v. glabrata, foliis ovato-oblongis v. 
rotundato-cordatis sinuatis crenatis integerrimisve, pedunculis folio brevioribus, involucri foliolis 2 ovatis, 
umbellis 2-3-floris, mericarpiis utrinque 2-3-costatis planis reticulatisve. — DC. Prodr. iv. 62 ; Fl. N Zeal. 
i. 83. H. cordifolia, Nob. in Hook. Ic. PI. t. 303. {Gum, 876.) 
Hab. Marshes, Arthur's Lakes, Circular Head, and Launceston, Gunn.— (M. Jan.) (v. v.) 
Distrib. Throughout Australia, New Zealand, and the Tropics generally. 
A very distinct species, easily recognized by its robust habit, leaves fascicled at the rooting nodes of the 
creeping stem, petioles often very long, blade of the leaf cordate-crenate or entire, hlunt.— Peduncles short. Lnvo- 
btcral leaflets few, large. Flowers two to three. Mericarps large, with broad ribs. 
b. Leaves lobed {not partite to the base). Umbels many-flowered. Mericarps with one ridge. 
2. Hydrocotyle hirta (Br. in Rich. Hydr. n. 40) ; pubescenti-pilosa, caulibus vage repentibus, 
foliis utrinque hirtis gracile petiolatis reniformibus 7-9-lobis, lobis brevibus obtusis dentatis crenatisve, 
pedunculis petiolis brevioribus, floribus numerosis capitatis sessilibus, mericarpiis parvis utrinque 1-costatis. 
— DC. Prodr. iv. 60. H. densiflora, DC. Prodr. iv. 67. {Gunn, 553.) 
Hab. Abundant in wet places throughout the Colony. — (PL summer.) {v. v.) 
Distrib. South-eastern Australia and New South Wales. 
A slender, creeping species, always more or less hairy or veiy pubescent.— Leaves solitary, reniform, seven- to 
nine-lobed, lobes toothed or crenate. Umbels many-flowered, capitate. Flowers sessile. Mericarps small. 
c. Leaves lobed {not partite to the base). Umbels few {three- to six-flowered). Mericarps with one ridge. 
3. Hydrocotyle pedunctdaris (Br. in Rich. Hydr. p. 38. f. 26) j csespitosa, glaberrima v. pubes- 
cens, caulibus rigidiusculis, foliis minutis breve petiolatis reniformi-rotundatis 3-5-lobis, lobis grosse dentatis 
glabris v. subtus petiolisque hirtis, pedunculis petiolis sequilongis, umbellis sub-3-6-floris, floribus brevissime 
pedicellatis, mericarpiis utrinque 1-costatis.— DC. Prodr. iv. 66; Nob. in Land. Joum Bot vi 467 (Tab 
XXXII. B.) V 
"V ar. a ; foliis inciso-dentatis supra glabris. — Planta Brownii. 
Var. (3; foliis obtuse lobatis, lobis 3-crenatis glabriusculis, petiolis hirsutis. {Gunn, 878.) 
Var. 7; caule gracili, foliis obtuse lobatis utrinque hirtis, pedunculis petiolisque hirsutis. {Gunn, 
Var. 8; caule elongato, foliis profunde lobatis, lobis obtuse 3-fidis crenatisve utrinque petiolis pedun- 
culisque glabratis v. parce pilosis.— N. gracilenta, Nob. in Lond. Joum. Bot. vi. 467. {Gunn, 878 ? 554 ?) 
Hab. Marshes, Circular Head, summit of the Western Mountains and Hampshire Hills! Gunn.— (11. 
Dec.) (*. v.) 
Distrib. South-eastern Australia. 
A very variable plaut, often extremely minute.— Sterns tufted and matted, stout. Leaves very variable in size, 
from 1 line to | inch diameter, rounded and reniform, three- to five-lobed, generally glabrous above and pilose 
below ; lobes coarsely toothed. Peduncles about as long as the petioles. Umbels generally three-flowered. Fruit 
shortly pedicelled.-Coinpured to the size of the leaves, the stems of this plant are often remarkably robust, and 
?*™ "" ' ' Y f " li h tiu " ltll,ired remains of the old stipules and bases of the petioles.— Plate XXXII. B. Fig. 1, leaf; 
• . flower; 3, the same with the petals and stamens removed; 4, fruit ; 5, transverse section of ditto .—all magnified. 
4. Hydrocotyle Tasmanica (Nob. in Lond. Joum. Bot. vi. 467) ; caule graciliusculo glabro v. 
hirto, petiolis pedunculisque sequilongis hirtis. foliis reniformibus reniformi-rotundatisve obtuse 5-7-lobis 
