Monographie der Gattung DidiscL.s (DC). 39 



normal minuteness, as might be thought at first sight. The small- 

 ness of the fruitlets briugs our new plant in some contact with Hy- 

 drocotyle, especially as H. corynophora might be transferable to Di- 

 discus."' 



2. Macrocarpon. 



Sp. 7. D. Benthami Dom. n. sp. 



D. pilosus Bentham in Enum. PI. Nov. Holl. Austro-occid. 

 Hügel 54 (1837) in nota, pro parte maxima (nee D. pilosus (Sm.) Dom.). 



Dimetopia anisocarpa Türczaninow in Bull. Soc. Nat. Moscou 

 XXIL, IL 29 (1849). 



D. grandis Turcz. ibidem. 



Didiscus anisocarpus F. Mdeller in Proc. Roy. Soc. Tasm. III. 

 238 (1857). 



D. grandis F. Müeller ibidem. 



TracJiymene australis Bentham Fl. Austral, III. 349 (1866) p. 

 p. minori. 



Annuus (vel forte interdum biennis), caulibus erectis minus 

 robustis usque subgracilibus sat strictis c. 2 — 5 dm altis hie 

 inde pilis paucis subrigidius culis gl anduliferis munitis 

 usque fere exacte glabris remote paucifoliatis plerumque a 

 parte inferior! ramosis, ramis elongatis subdivaricatis 

 strictis, foliis radicalibus sub flore subuullis, caulinis minoribus 

 brevepedunculatis mediis superioribusque subsessilibus subglabris 

 usque exacte glabris, petiolis basi vix dilatatis aut cum minute am- 

 pliatis tunc lateraliter non vel parce ciliatis, laminis fere ad 

 basin 3partitis, segmentis cuneatis 3fidis velinciso- 

 lobatis, lobis linearibus acutis usque subacuminatis, um- 

 bellarum pedunculis singulis in ramis lateralibus et caulem terminan- 

 tibus sat longis, umbellis sub flore parvis diametro c. 1 cm 

 vel paulo plus latis multifloris, involucri foliolis basi breviter 

 connatis lineari-lanceolatis pedicellis sub flore interdum aequilongis 

 vel sublongioribus sub fructu brevioribus glaberrimis vel fere, 

 glabris, calyce indistincto, petalis parvis Jatis obtusis probabiliter 

 semper albis c. 1 mm longis, carpello uno semper abortive 

 altero sub fructu cordato-oblongo vel rotundato circa 3 mm longo et 

 3 mm lato obtuse tuberculato vel glochidiato-muricato, stylis elongatis, 

 carpophoro persistent! indivise. 



