22 FLORA OF SOUTH AUSTRALIA. 
Elatine. 
A small tender glabrous annual prostrate or creeping over 
mud; leaves ovate to broadly oblong ; flowers solitary, 
axillary; seeds curved, wrinkled sid oor ... Americana 
Bergia. 
Stamens as many as the petals or sepals; flowers clustered, 
axillary; small pubescent or hairy annual ... ... ammannioides 
Stamens twice as many as the petals or sepals; flowers 
solitary, stalked ; a glabrous or slightly hairy perennial 
with woody prostrate branches; leaves ovate ...  perennis 
ORDER HYPERICINEAE. 
Hypericum. 
Small erect glabrous herb; leaves from oval to lanceolate- 
elliptical; sepals lanceolate; fruit oval-ellipsoid, 1-celled, 
3-valved ... sa ae mts a 2: be ... Jdaponicunr 
ORDER RUTACEAE. 
1. Leaves opposite; petals 4, united or free. 
Petals 4, united into a cylindrical corolla; calyx cup- 
shaped and undivided, or cleft; undershrubs with 
simple stalked leaves and large showy pendulous 
flowers... se a #. mS a .. Correa 
Petals’ 4, free, spreading; calyx 4-cleft. 
Stamens 4, inserted on the outside of distinct gland- 
like bodies, alternating with the petals... oe era 
Stamens 8; disk without glands; leaves simple or 
compound; undershrubs or almost herbaceous ... Boronia 
11. Leaves alternate, simple; petals 5, free. 
~ 
Stamens usually 10; fruitlets usually 5, pointed; shrubs. Eriostemon 
Stamens 5; fruitlets 5, blunt; small trees or shrubs... Geijera 
Correa. 
Calyx cleft, the lanceolate teeth as long as the tube. 
Petals separating after the flower is expanded, green 
or purple; filaments dilated at the base, anthers 
yellow... ae sats we 
Calyx truncate, with four minute teeth. 
Petals separating after the flower is expanded, white 
or pink; filaments filiform, anthers red... .. alba 
aemula 
