6 FLORA OF SOUTH AUSTRALIA. 
albumen; leaves alternate; (ovary half-inferior 
in Portulaca). it cal uy ... Portulaceae 
Calyx 5-cleft or of 5 cepale: pee 5, rarely 0; 
stamens 5 or 10; seeds albuminous, embryo 
curved around the albumen; leaves opposite ... Caryophylleae 
b. Seed one in each fruit; petals usually absent (also Pseudanthus). 
Calyx lobed or of distinct sepals; stamens inserted 
at the base of the calyx; leaves opposite ... Illecebraceae 
Sepals 5 or 6, herbaceous or succulent; styles usually 
3; embryo lateral in the albumen ; pane united 
in a tube we : 5 Kae . Polygonaceae 
Calyx usually 5- par’ fie. heen or eiecalente 
stamens ee 55 ; stigmas? 2or3; embr ue annular 4 
or coiled £3 ; Chenopodiaceae 
Calyx 5-partite, es fad oe oy ; ae ] te 3 Amarantaceae 
Corolla tubular; calyx tubular, 5- lobed ; stamens 5, 
hypogynous, opposite the corolla-lobes ; styles 5; : 
ovule pendulous; embryo straight in the albumen Plumbagineae 
Calyx 5-lobed, petaloid, adherent to the fruit; style 
simple; albumen scanty, cotyledons folded .. Nyetagineae 
Calyx 4- to 5-cleft; flowers unisexual ; stamens 4 or 5; 
seed pendent, albumen scanty or wanting P. VWELIcCacese 
Trees or shrubs with the ultimate branchlets cylin- 
drical and jointed at the nodes; leaves reduced to 
very small scales in whorls at the nodes ; flowers 
unisexual in separate plants; male flowers in 
catkins ; stamen 1; calyx of one or two segments ; 
female flowers without calyx; fruits seed-like, 
winged at the apex; the whole fruiting mass 
resembling a pine-cone (strobile) ... te ... Casuarineae 
Sub-Class II.—Choripetaleae Perigynae. 
1. Ovary superior, quite free from the calyx. (Also Santalaceae 
partly, Ficoideae partly, Illecebraceae). 
Ovary 1-celled, formed of 1 carpel. 
Fruit a /egume ; stamens 10, rarely less, or numerous; 
petals present, regular or irregular, partially united 
or rarely wholly united ; stipules usually present ; 
leaves simple, pinnate, or absent; seeds exalbu- 
minous ... 3 ss 18 ahs .. Leguminosae 
Ovary with a Ap Phinve ide: ett not bursting; 
petals 0; calyx petaloid, tubular, requar, 4-lobed ; 
stamens 2, alternate ; flowers uni- or bi-sexual; 
albumen scanty or copious... st oe .. Thymeleae 
