EUPHORBIACE^. 251 



143. Petalostigma F. Muell.^ — Flo-vvers dioecious or more rarely 

 monœcious eglandular apetalous ; sepals 4-6, imbricated. Stamens 

 Qo , central ; filaments inserted on conical receptacle at apex and be- 

 tween the stamens villose-hirsute, otherwise £i-ee short erect ; anthers^ 

 extrorse penicillate at apex ; cells long adnate and rimose. Germen 

 sessile ; cells 3, alternating with interior petals, or 4, 2-ovulate ; 

 obturator above micropyle extrorsely much evolute ; style branches 

 3, 4, widely floshy-subpetaloid, cuneate-obovate or lanceolate undu- 

 late-crispate. Capsules drupaceous ; exocarp fleshy ;^ putamen bony, 

 3-4-coccous ; cocci 2-valved, dorsally rather prominent carinate 

 within ; seed thick arillate at micropyle ; cotyledons of cojDiously al- 

 buminous embryo tbliaceous subelliptical. — A silky tomentcUose 

 small tree ; leaves alternate petiolate ; stipules 2, persistent ; limb 

 ovate or suborbiculate entire penninerved ; male flowers in few flowered 

 cymes shortly pedicellate ; female solitary axillary ; peduncle at apex 

 few-bracteate. {Australia,:^) 



144. Hyaenanche Va.hl.^ — Flowers diœcious apetalous ; male 

 receptacle varied in form, sometimes irregular, depressed, undulate 

 or subplicate. Sepals 5-12, imbricated, unequal; exterior usually 

 smaller. Stamens 8-x , inserted round empty centre of receptacle ; 

 filaments free ; cells of oblong anthers longitudinally adnate, in- 

 trorsely or extrorsely, more rarely all laterally rimose. Receptacle 

 of female flowers conical ; sepals 3-8, deciduous. Germen 3-4- 

 locular ; ovules 2-nate ; style branches 3, 4, thick recurved dentate. 

 Capsule 3-4-coccate, 6-8-sulcate ; exocarp suberose solubile ; endo- 

 carp ligneous ; seeds in cocci 1, 2, arillate at micropyle; albiunine 

 scanty (coloured) ; cotyledons of straight embryo lateral foliaceous, 

 cordate ® at base much longer than superior radicle. — A small tree ; 

 branches suberose corticate ; leaves opjjosite or 3-4-nate, shortly 

 petiolate, entire coriaceous glabrous penninerved ; flowers axillary ; 



1 In Soolc. Journ. (1857), 16.- — H. Bn. Ek- — ? Hylococcus sericeus R. Br. in Baiter, Icon, 



phorb. 657 ; in Adansonia, vii. 352, t. 2. — M. iiied. (ex Benth.). 



Aro. Prodi: 273. * In Lamb. Descr. Ciiichon. et Hya-n. (1797), 



" Sometimes sterile. 62, t. 10. — A. Juss. Euphorb. 40. — Endl. Gen. 



3 Ked, bitter. n. 5876.— H. Bn. Euphorb. 565, t. 23, fig. 29, 30. 



* Spec. 1. P. australianum H. Bn. in Adaii- — M. Aug. Piodr. 479. — Toxicodendron Thunb. 



sotiia, vii. 356. — P. quadriloculare F. Muell. in Act. Holm. (1796), 190, t. 7 (not Ï., not 



foe. cit. — Benth. Fl. Austral, vi. 92. — P. trilocu- Gr.JERTN.). 



tare M. Aug. in Flora (1864), 471 ; Prodr. n. 2. " Greenish or whitish. 



