58 NATURAL HISTORY OF TLANTS. 



VI. GYROSTEMONE^E. 



10. Gyrostemon Desf. — Flowers dioecious. Male calyx small, 

 unequal 4-8-dentate ; teeth imbricate, finally not contiguous. 

 Stamens G-go , 1- or co -verticillate ; anthers subsessile, cuneiform, all 

 inserted on the convex receptacle or round processus of central 

 column, 2-celled, lateral 2-rimose ; connective produced beyond, 

 cells, short and obtuse. Female calyx as in male flower. Carpels 

 4-oo , verticillate round more or less long conical receptacle. Germens 

 1 -ovulate, produced in styles more or less incurved or reflexed at apex, 

 inwardly stigmatiferous ; ovule subbasilar, ascending ; micropyle 

 extrorse, inferior. Fruit subglobose or obconical {Codonocarpus), in 

 follicles 4-oo , constant, finally separating from columella (of variable 

 form, furnished with 4— go persistent apices of style), and among 

 themselves, dehiscing either dorsally and longitudinally {Gj/rostemo?i) 

 or by ventral clefts {Codonocarpus). Seed ovate, pseudo-cam pylo- 

 tropous, hippocrepiform, alternately ascending more or less 

 from the internal angle of the carpels ; testa transverse rugose, 

 arillate at micropyle and hilum ; embryo hippocrepiform ; cotyledons 

 narrow, incumbent ; radicle inferior, extrorse ; albumen thin, or more 

 or less copiously farinaceous. — Ramified shrubs (or herbs ?) glabrous; 

 leaves alternate sessile articulate ; stipules small, lateral ; limb linear- 

 subulate, or membranous-subcarneous ; flowers reduced to leaves 

 * sometimes {Codonocarpns) to bracts, axillary, solitary, pedunculate 

 {Australia). See p. 41. 



17? Tersonia Moq. — Flowers nearly of Gyrostemon; males 

 8-co -androus ; stamens round the base of processus of central recep- 

 tacle 1-seriate. Carpels co (15-30) in the fruit depresso-globose, 

 ligneous, transverse, rugose, connate, indehiscent; seeds and other 

 characters of Gyrostemon. — Shrubs ; leaves linear ; flowers axillary, 

 subsessile {Australia). See p. 43.^ . 



18. Didymotheca Hook. f. — Flowers dioecious, 4-merous. Calyx 

 short ; 2 lateral lobes longer and narrower. Stamens 8, 9 ; anthers 

 subsessile, erect, obpyramidal ; cells 2, lateral marginally rimose. 

 Germen free ; carpels 2, lateral 2-dymous, compressed ; style 2, 



