I 



XXXV. STACIvIIOUSIE.1:. 405 



5, perigynous, with elongated claws, usually free at the base, but united up- 

 wards in a tubular corolla, with spreading lobes, imbricate in the bud. Disk 

 thin, lining the calyx-tube. Stamens 5, inserted on the margin of the disk; 

 filaments free, slender; anthers oblong. Ovary free, 2- to 5-lobed, 2- to 5- 

 celled ; style single, vvith 2 to 5 lobes, stigmatic along the inner side. Ovules 

 solitary in each cell, erect, anatropous. Fruit of 2 to 5 globular, angular, or 

 winged indehiscent cocci, at length seceding from the axis. Seeds solitary, 

 erect ; testa membranous ; albumen fleshy ; embryo straight ; cotyledons 

 short ; radicle inferior. — Herbs, usually forming a perennial stock, with erect, 

 little branched, virgate stems, often assuming a yellowish colour, rarely dwarf 

 and tufted. Leaves alternate, narrow, entire, often somewhat fleshy. Stipules 

 none or very minute. Flowers in terminal spikes, rarely solitaiy, with 3 minute 

 or linear bracts (1 bract and 3 braeteoles) at their base. Stamens included 

 m the coroUa-tube, of very unequal lengths. Pistil almost always 3-mcrous. 



The Order is limited to a siugle genus, almost endemic in Australia, one species extend- 



nig to the Philippine Islands, and auother represented by a closely allied species in New 

 Zealand. 



1. STACKHOUSIA, Sm. 



(Tr3|)tcrococciis, EndL\ PMiostigma, Schuch) 



Characters and distribution those of the Order, 



Corolla-lohes oblong, obtuse. 

 Flowers solitary, terminal, sessile among the leaves of dwarf tufted 



stems . ■ 1. tS. pulvinaris. 



Stems elongated. Spikes temiinaL 

 Cocci acutely angled or winged. Leaves obovate or obovatc-oblong 2. S, spatkulata. 

 Cocci obovoid or globular, reticulate. Leaves lanceolate, linear or 

 filiform. 

 Spikes dense at the top, usually interrupted as the flowering ad- 

 vances. Flowers 4 to C lines long. 

 Leaves flat, lanceolate or linear or rarely terete. Bracts small 3. S. monog^/na. 

 Leaves very narrow or terete. Bracts filiform. 



Spikes or the whole plant pubescent ♦ , 4. 5. ^ulescens. 



Glabrous except sometimes the cocci 5. ^. liuegehi. 



Spikes short, dense. Flowers about 3 lines long ..... 6. S.fiava. 

 Spikes filiform. Flowers distant, not 3 lines long. Leaves nar- 

 row, often very few 7. 5. muricata. 



Corolla lobes acute or acuminate. 



Cocci obovoid or globular, reticulate. Corolla 3 Unes or less. 



Spikes shortj dense. Leaves linear . 6. S.Jfava, 



Spikes long and slender. Flowers or clusters of flowers distant. 



Leaves oblong or linear, sometimes few or very small .... 8. 5. viniinea. 

 Flowers few, soHtary along the broom-like braaches. Leaves all 



reduced to minute scales 9. iS. sco^ana. 



Cocci broadly winged. Corolla more than 4 lines, with filiform points 

 to tie lobes 10. 5. Brunonu. 



. 1. S. pulvinaris, F. MuelL in Trans. Thil. Soc. Vict. i. 101 ; Fragm 

 11. 359, iii. 88 ; and PL VicL iL t. II. A chvnrf, glabrous, much branched, 

 'ind densely tufted or prostrate herb. Leaves crowded, linear-obloug, obtuse, 

 rather thick, usually 3 or 4 lines long. Flowers solitary and almost sessile 

 amongst the last leaves, and but little exceeding them. Bracts very small, 

 obtuse. Calyx-lobes ovate. Corolla about 3 lines long, with oblong obtuse 





