JHydrocotylece.] LXXX. UMBELLIFERJE, 873 
ralia in commissura latentia v. à commissura distantia prominula, rarius .cujusve carpelli 
in unum ad commissuram confluentia, secundaria rarius eónspicua, rarissime subreticulata ; 
vittze 0, v. intra juga tenuissims. Carpophorum indivisum v. 0, rarissime 2-fidum. Semen 
& latere compressum.— Herbs» nunc perennes, prostrate v. ad nodos radicantes, nunc 
erecti annus sepe pusille, nunc rarius suffrutices humiles. Folia integra palminervia v. 
palmatim dissecta, rarius angusta 1-nervia. Stipule parve, scariosse, szepe lacere, rarissime 
obsolete. Umbelle simplices v. rarius irregulariter subcompositze, v. pedunculus florum 
verticillis nonnullis infra umbellam terminalem auetus, Involueri bractesm paucs v. O. 
Flores albi v. rarius purpurascentes, interdum unisexuales. —— 
. Species ad 70, plurims uliginos? v. paludosm, nonnulle per regiones calidiores temperatasque 
utriusque orbis latissime disperse, plurims Australasiz, Africze australis v. Americse australis, pauci- 
ores Asise calidioris, Africe tropicm v. Ameries borealis propris. 4. Rich. Monogr. in Ann. Sc. Phys. 
Par.iv. cwm ic. oo. DO. Prod. iv. 69. Walp. Rep. ii. 881; v. 838: Amm. i. 839, 977 ; ii. 690; 
v. 58. | Harv. et Sond. Fl. Cap. ii. 526." Hook. f. Handb. N. Zeal. Fl. 86. .Benth. Fl. Austral. 
ii. 337. : Jedd. Chlor. And. ii. 188. 
Genus in sectiones v. subgenera 2 facile distinctas dividendum : 
1. Euhydrocotyle. Petala acuta, stricte valvata. Fructus juga secundaria O v. obseüra. Folia 
peltata v. basi cordata. Ruiz et Pav. Fl. Per. t. 246 ad 248. — Cav. Ic. 1. 488. f. 1... Link et Otto, 
Ic. Pl. Rar. t. 21. Hook. Erot. Fl.t. 29,80 : Ic. Pl. 1.812: Hook. f. Fl. Tasm.1.32,98.. Wig, 
Ic.t. 564, 1002, 1008. — Reich. f. Ic. Fl. Germ. 1. 1842. - ; 
2. Centella. Petela obtusa, latiuseula, imbricata. Fructus juga secundaria nonnunquam pro- 
minula, pericarpio ssepe duro. Folia basi cuneata v. angusta, rarius cordata. Species, preter H. asiati- 
cam per regiones calidiores utriusque orbis latissime dispersam, omnes Capenses v. Australians. 
Ruiz et Pav. Fl. Per. t. 245. WigM, Ic. t. 565. — Hook. Ic. Pl. 1. 303.  CENTELLA, Linn. Gen. n. 
1051. TursaAwTHUS, Lour. Fl. Cochinch. 175. GurcERIA, Nutt. Gen. N. Amer.i.177. OCnow- 
DROCARPUS, JVuff. Ll. c. in corrigend. : 
2. Micropleura, Lag. Obs. Aparasol. 16.—Calycis dentes obsoleti. Petala integra, 
latiuseule imbrieata. Discus planus, crassiusculus, stylis a basi filiformibus. Fructus a 
latere compressus, subplanus, commissura angusta, basi emarginato-2-lobus ; carpella a 
latere compressa; juga primaria dorsalia fructum marginantia, intermedia et lateralia 
prominula areuata, secundaria 2 utrinque juxta comimissuram nonnunquam tenuiter pro- 
minula, rectilinea ; vitte oo v. intra juga tenuissimz. —Carpophorum 0. Semen a latere 
compressum.—Herba glabra, eaulescens. Folia reniformia, crenata, palminervia, petiolo 
basi in stipulam scariosam integram abrupte dilatato. Umbelle longe pedunculatz, irre- 
gulariter composite. Involueri bractee 1-2, parve. Flores unisexuales, in umbellula 
sepius 1 9 subsessilis, 2 4 pedicellati. 
Species 1, in ins. Chiloe crescens (Lag. ex Herb. Pav.). DC. Prod.iv. 71. Specimina nostra, cum 
charactere Lagascano omnino convenientia (a Planchonio primum determinata), e montibus Mexi- 
canis provemunt (Galeotti, n. 2752 ; F. Mueller, n. 1097).—Genus ab Hydrocotylis sectione Centella 
vix nisi umbella composita differt. , ; 
3. Trachyínene, Rudge in Trans. Linn. Soc. x. 3900. t. 21, non DC. (Didiseus, DC. 
Prod.iv.72. Huegelia, Reichb. Consp. 144, et Iconog. Exot. t. 201.)— Calycis dentes mi- . 
nuti v. obsoleti, rarius 1-2 subulati.. Petala integra, obtusa, valde imbricata. "Discus 
planus marginibus prominulis v. obsoletus, stylis * basi filiformibus. Fructus a latere 
compressus, ssepius planus, basi emarginatus, commissura angusta ; carpella a latere com- 
pressa, altero nune abortiente; juga primaria dorsalia fructum marginantia, nunc acuta v. 
subalata, intermedia prominula areuata, lateralia in commissura latentia; vittze O, v. intra 
juga tenues. Carpophorum indivisum. Semen a latere plano-compressum.—He erbe pilis 
simplicibus hirsute v. rarius glabre. Folia ternatim dissecta v. rarius indivisa, dentata. 
Stipule 0. Umbelle simplices. Involueri bractes lineares, sepe connatee. Flores albi 
v. ezrulei. Fructus sepe hirsutus v. tuberculatus, earpello altero interdum glabriore 
ls&viore v. abortivo. . 
Species 14, una Novo-Caledonica, Brongn. ef Gris, in Ann. Sc. Nat. Ser. 5. iii. 235 (Didiscus), una 
Borneensis, ceterre omnes Australiang. Benth. Fl. Austral. iii. 847. Bot. Reg. t. 1225. Bot. Mag. 
t. 2875 (Didiscus). Hook. Ic. Pl. t. 304, 307 (Didiscus). 
