80 
Xanthostemon. 
Ferd. Muell. in Hook. Kew Misc. 1x. p. 17. 
Calycis tubus hemisphsricus v. patellaris cum germinis basi 
connatus, limbi lobi 5 diu persistentes. Petala 5 decidua annulo 
Staminifero extus inserta. Stamina numerosa uniseriata omnia 
fertilia libera exserta. Anthersw cordato-ovatz introrsz biloculares 
basifixe, loculis parallelis longitudinaliter dehiscentibus, dorso 
eonnectivo glandulaceo inerassats. Stylus filiformis. Stigma 
simplex. Capsula supera globosa chartaceo-crustacea haud lig- 
nescens, loculieide bi-vel trivalvis polysperma. | Endocarpium 
demum secedens, cujusque loculi bivalvatum. | Semina lata, com- 
pressa aptera v. pauca fertilia apice alata. 
Arbores Australie boreali-occidentalis, foliis chartaceis oppositis 
v. in apice ramulorum confertis ovatis integerrimis, umbellis 
axillaribus et terminalibus corymboso-confertis. 
Genus a Metrosidero differt capsula basi tantum cum calyce 
connata, endocarpio soluto, denique seminibus planis. 
XXanthostemon paradoxus. 
Ferd. Mueller, 1. c. : 
Ramulis teretiusculis, foliis in ramulorum apice confertis breviter 
petiolatis basi acutis, dentibus calycis deltoideis, petalis ovato- 
orbiculatis, filamentis elongatis setaceis rigidulis luteis, placentis 
horizontalibus. 
In montibus petrzis terree Arnhemicz juxta flumen Victori: non 
rarus.. 
, Arbor minor, rarius frutex. Cortex in trunco ramisque persistens 
rugosus et rimulosus, denique frustulose secedens.  Ramuli cica- 
trisati. Folia plana obtusa 2-4" longa, 1-2" lata, subtiliter pellucide 
punctata penninervia retieulato-venulosa, sive glabra sive velutina, 
subtus pallidiora. "Umbellulz 3-5-florz opposite glabrz v. preeter 
genitalia velutino-pubescentes. Pedunculi sepe compressi ecras- 
siusculi 2-5" longi basi bractea cymbeo-lanceolata decidua eis fere 
squilonga suffulti. Pedicelli ealyeis longitudinem subzquantes vix 
angulati, basi bracteolis duabus deciduis linearibus v. lineari- 
subulatis 13-3" longis sustensi. Calyces ecostati ; tubus 15" longus, 
limbi lobos zquans. Petala dilute flava membranea circiter 2" 
longa. Stamina pollice parum breviora. Anthere$"longs. Stylus 
luteus stamina paulo excedens. Capsula circiter 4" longa. Stratum 
epicarpii et mesocarpii fragile valvatum in commissuras endocarpii 
paulo penetrans. Endocarpium etiam lateribus septa formantibus 
separatis omnino liberum dorso et angulo interiore longitudinaliter 
dehiscens chartaceo-membranaceum v. subpergamenum. Placente 
tenui-clavatze e medio axeos divergentes. Axis supra placentas 
setuliformis, Semina circiter 1" longa, paulo minus lata, cano- 
fulva angulato-semiorbicularia subtilissime reticulata aptera. 
