328 PLANTS OF CENTRAL AUSTRALIA 



PETALOSTYLIS. 



Csesalpineariun genus, Labichese proxirnum. 



Char. Gen. — Calyx 5-phyllas, sequalis. Petala 5 subse- 

 qualia, patentia. Stamina : Fllamenta quinque sepalis op- 

 posita, quorum tria antlienfera, antlieris basifixis lineari- 

 bus, duo reliqua castrata. Ovarium oligospermuiu. Sfi/lus 

 maximus, petaloideus, trilobus, lobo medio longiore axi in- 

 crassata desinente in stifjma obtusum simplex ! 



Prutex glahei\ erecfus. Folia alferna, pimiata cum im- 

 pari.foliolis alternis, Racemi axillares, paucifiori. Flores 

 flavi. 



80] 13. Petalostylis Lahicheoides. 



Log. *' In the bed of a creek along with Sturtia." D. 

 Sturt. 



Obs. Eadem omnino species exstat inter plantas in 

 Insulis Archipelagi Dampieri jnxta oram septentrio-occi- 

 dentalem Novae Hollandise in itinere navis Beagle dictge 

 lectas. 



Desc. Frutex facie fere Cassise et Labichese. Folia alterna, 

 cum imparl pinnata, foliolis alternis brevissime petiolatis 

 oblongo-lanceolatis cum mucronulo terminali paulo majore. 

 Stipulse parvae caducse. Racemi pauciflori, axillares, folio 

 breviores. Alabastrum ovali-oblongum acutinsculum. Calyx 

 viridis, sepalis subsequalibus oblongis acutis, sestivatione 

 imbricatis. Petala quinque subsequalia, oblonga, flava, astiva- 

 tione imbricata, sepahs sesquilongiora. Stamina 3 antherifera 

 sequalia, iilamentis abbreviatis, antheris acutis bilocularibus, 

 loculis sulco longitudinali insculptis ; 2 reliqua rudimenta 

 parva subfiliformia. Ovarium sessile, lineare, 3-4-spermum. 

 Stylus lobo medio triplo longiore, oblongo-lanceolato, lobis 

 lateralibus auric uliformibus semiovatis obtusis. Stigma 

 imberbe. . 



Obs. The structure of the style, which forms the only 

 important character of this genus, so far as the specimens 

 enable me to judge, is so remarkable and peculiar, as to 



