86 FLORA OF SOUTH AUSTRALIA. 
Styles persistent, calyx-lobes imbricate ... Geum 
Styles deciduous, calyx-lobes valvate Potentilla 
Shrubby ; fruitlets succulent ; no bracts Rubus 
Petals absent, stamens not exceeding 10, carpels 1 to 4, 
enclosed in the calyx-tube. 
Leaves pinnate ; ovules pendulous, style terminal ; 
fruit-calyx armed with prickles. Perennial herbs Acaena. 
Leaves simple ; carpel 1 with 2 erect ovules; stamens 
10, hypogynous ; style basal. Shrub : Stylobasium 
Geum. 
Erect perennial ; radical leaves pinnate of 3 to 5 leaflets 
on long stalks ; flowers a eh terminal in a loose 
panicle ; urbanum 
Potentilla. 
Creeping ; leaves pinnate of several pairs, silvery-white 
underneath ; flowers yellow, solitary on long stalks anserina 
Rubus. 
Erect, lax, prickly stems; leaves pinnate of 3 to 5 leaf- 
lets, white-tomentose underneath ; flowers reddish, 
few, in short terminal panicles; fruit red, globular... paruifolius 
Acaena. 
Flowers in cylindrical interrupted spikes, from among 
almost basal leaves; stamens 5 to 10; fruit-calyx 
armed with many short barbed prickles ... oUuina 
Flowers in globular heads ; stems prostrate ; stamens 2 ; 
fruit-calyx armed w ith 4 long equal barbed prickles Sanguisorbae 
Stylobasium. 
Erect, leaves cuneate-oblong ; drupe nearly dry, globular spathulatum 
ORDER FICOIDEAE. 
Calyx-tube adnate to the ovary. . 
Petals numerous linear. Succulent herbs... Mesembrianthemum 
Petals none. Herbs or shrubs Tetragonia 
Sepals free from the ovary, but with a cHGENG 
tube bearing stamens; petals 0. . 
Capsule opening in valves ; stamens 4 Gunnia 
Stamens indefinite; leaves fleshy Aizoon 
Capsule bursting by a circular rupture. , 
Ovary 1-celled, one style Trianthema 
Ovary 2-celled; two styles Zaleya 
Calyx of distinct sepals; petals 0. Herbs Mollugo 
