874 LXXX. UMBELLIFER.E. LZydrocotylea. 
Druzrorna, DC. Prod. iv. 71, PRITZELIA, JValp. Rep. i. 428, HEMICARPUS, F, Muell. in Hook. 
Kew Journ. ix. 18, genera proposita sunt ad species nonnullas quibus earpellum alterum glabrius 
levius v. abortivum, character minimi valoris, nec in eadem specie constans.  CksATIA, .Endl. in 
Ann. Wien Mus. ii. 200, non differt nisi indumento fructus densissime lanoso. 
4. Siebera, Reichb. Consp. 145. (Trachy mene, DC. Prod. iv. 72, non Rudge. Fischera, 
Spreng. Pl. Umb. Prod. 27, pro parte, non DD C.)—Calycis dentes minuti. Petala subval- 
vata v. leviter imbricata, acumine breviter inflexo, ob costam superne impressam margines- 
que recurvos retusa, alabastro 5-angulo. Discus planus crassus v. cum stylopodiis de- 
pressis confluens. Fructus a latere compressus, ad commissuram angustam constrietus v. 
complanatus, basi leviter emarginatus; carpella a latere compressa v. turgidula, dorso 
obtusa v. acuta; juga primaria dorsalia sepius prominula, intermedia obscura v. tenuia, 
arcuata, lateralia in commissura latentia v. ad commissuram parum prominula; vitte O0, 
v. intra juga tenuissima. Carpophorum indivisum. Semen plus minus a latere com- 
pressum.— Herb: perennes, rigide, virgate, v. frutices ericoidei glabri v. tenuissime glan- 
duloso-puberuli. . Folia integerrima v. inferiora dissecta, espius parva, v. omnia ad 
squamas minutas reducta. Stipule 0. Umbelle simplices v. szepius gosmon et pauci- 
radiate. Involueri bractez parvs. Flores albi. 
Species 14, omnes Australians. Benth. Fl. Austral.ii. 351. Labill. Pl. Nov. Holl. t. 99 ad 
101 (4dzorella). Cav. Ie. t. AS (Azorella). Bot. Mag. t. 8334 (Trachymene). 
PLaTYsACE, Bwnge in.Pl. Preiss. i. 285, et PLATYCARPIDIUM, F. Muell. in Hook. Kew Journ. ix. 
309, fructu planissimo, a genere nequaquam separanda videntur. 
5. Xanthosia, Fudge in Trans. Linn. Soc. x. 301. £. 22. (Leucolena, E. Br. App. 
Flind. Voy. 557.)— Calycis limbi segmenta orbiculata ovata v. lanceolata, peltata cor- 
data v. media basi affixa. Petala acumine induplieato, ob costam superne impressam 
retusa v. emarginata, leviter imbrieata v. subvalvata. Diseus subplanus, v. lobi 2 pone 
stylos prominentes. Fructus a latere compressus, commissura angusta, basi auriculis ro- 
tundatis emarginatus; carpella a latere compressa, dorso obtusa; juga primaria omnia 
prominula sub:equalia, basi curvata, additis interdum secundariis plus minus conspieuis ; 
vitte O (v. intra juga tenuissim: P). Carpophorum indivisum. Semen a latere leviter 
compressum.—Herb:s v. fruticuli, diffusi deeumbentes v. erecti, pilis longis mollibus 
tomento stellato immixtis vestiti v. glabri. Folia dentata lobata v. ternatim dissecta. Um- 
bell; ssepius irregulariter compositze, radiis floribusque paucis, bracteis totidem (interdum 
amplis coloratis) involueratzm, umbella tota tamen nonnunquam ad flores perpaucos v. 
ad florem unicum reducta. 
Speeies note 17, omnes Australianm. Benth. FL. Austral. iii. 357. Hook, Jc. PI. t. 45 (Leucolena), 
3802. Bot. Mag. t. 3582. 
ScHGNOLENA, Punge in Pl. Preiss. i. 289, et Patcdirl Junge, 1. c. 292, à Xanthosia distin- 
guuntur calycis limbi segmentis cordatis v. peltatis, plus minus tamen cordata sunt in aliis Xanthosie | 
speciebus. Juga secundaria in X. pilosa aliisque nec in Pen£apeltide sola conspicua sunt. 
6. Azorella, Lam. Dict. 1.344; Illustr. t. 189. (Chamitis, Banks in Gertn. Fruct. i. 
94. ;. 92. Fragosa, Ruiz et Pav. Prod. Fl. Per. 43. t. 34. Bolax, Commers. in Juss. Gen. 
226.) —Calycis dentes prominuli, nunc minuti, v.limbi segmenta conspicua rarius petaloidea.. 
Petala integra, obtusa v. acuta, imbricata. Discus planus crassus v. cum stylopodiis 
depressis v. subconieis confluens, Fructus a latere leviter v. vix compressus, ad commis- 
suram utrinque suleatus v. constrictus ; carpella transverse subteretia v. 5-gona, v. rarius 
a dorso subplano-compressa lateribus obtusis nec acutangulis; juga primaria subzqualiter 
plus minus prominula v. obseura, lateralia a commissura dissita ; vittz intra juga plus 
minus eonspicus, sub epicarpio sepe latentes. Carpophorum ind ina sepius breve. 
Semen rectum, subteres — Herbs perennes suffruticesye, nunc densissime pulvinato- 
ramogissimi, rarius stoloniferi, foliis imbricatis obteeti, nune ramis plus minus elongatis 
vaginis foliorum vestiti, nune herbs czspitosz foliis radicalibus. Folia integra dentata 
v. ternatim palmatimve dissecta. Stipule O, v. e ciliis scariosis ad basin petioli con- 
stantes, rarius scariosz lacerz.  Umbelle intra folia sessiles v. pedunculatee, simplices v.- 
