294 Do min, Zwei neue Umbellifcrcn-Gattunyen. 



und schwer zuyänyliche Originaldia^nose ') aus Wings South 

 Science Rcc. 1. c. lassen wir nachstellend folgen: 



Annual, minute, except the fruit glabrous; stipules lacerated; 

 leaves in outline cordate- or renate-roundish, to the middle or less 

 decply cleft into three or five lobes, besides somewhot crenated; 

 umbels with several closely crowded very minute flovvers; stalk 

 as long as the umbel or extending to thrice its length; involu- 

 crating bracts linear-setaceous, as well as the flovver-stalklets very 

 short; styles extremely minute; fruits did\mous roundish, much 

 compressed ; vallecule between the carinal edge and the semi- 

 circular lateral nerve of each mericarp densely fringend ; their 

 lateral areole ample, dimidiate-orbicular, smooth or rarely papilli- 

 gerous, only slightly impressed; carpophore permanently adnate 

 and undivided. 



2. Homalosciadium Dom. nov. gen. 



(Tab. fig. 1—3.) 



Floribus longiuscule pedicellatis in umbellas multifloras sim- 

 plices conjunctis, involucri bracteis minutissimis vel inconspicuis, 

 calycis dentibus indistinctis, disco parvo, stylis brevissimis, sta- 

 minibus parvis brevibus, petaüs albis minutis latis obtusis in 

 gemma subimbricatis, fructu late oblongo sponte bipartibili a 

 lateribus plane compresso, mericarpiis glabris ad commissuram 

 angustissimam constrictis, faciebus enervosis latvibusque, opacis 

 quinquejugis, jugis omnibus primariis, lateralibus saepe subobso- 

 letis aut in commissura latentibus, intermediis dorsali valde ap- 

 proximatis faciemque dorsalem perangustam marginantibus et cum 

 jugo dorsali plus minusve transverse ruguloso-conjunctis, vittis nullis, 

 carpophoro libero persistenti ad tertiam partem usque supra 

 medium bifido. 



Planta annua glabra caulibus sympodice compositis, foliis 

 basi cuneata in petiolum sensim abeuntibus, stipulis vaginisquc nullis. 



Species unica, australiensis: 



H. verticillatum Dom. 



Synonyma: 



Hi/drorotyk verticillata Turcz. in Bull. Soc. Nat. Mose. XXII. 

 (1849)^11. 28. 



H. Iiomalocarpa F. Muell. Fragm. Phyt. Austr. II. 129 

 (1860—1861). 



Ceutella homulocatpa Drude in Englers Pflanzenfam. III. 8. 

 120 (1898j. 



Planta annua modo tantum 2-3 cm alta interdum altitudinem 

 20 cm superans, caulibus plerumque erectis rarius prostratis haud 

 raro maxime ramosis vix angulosis tenuibus glabris foliatis. Foliis 

 subaequaliter distantibus plerumque 3—4 verticillatis, uno majori, 

 2 — 3 minoribus umbellas fulcrantibus eo verticillatim appropinquatis, 

 Omnibus basi cuneata in petiolum iis aequilongum usque duplo 



^) Auch Diels und Pritzel, die besten Kenner der westaustralischen 

 Flora, sagen 1. c: ,,Cuius speciei fructu pulcherrime ciliato insignis de- 

 scriptionem nunquam ad lucem prodiisse putamus". 



