PORTULACACEAE 493 
9. TETRAGONIA L. Annual or perennial fleshy herbs or partially 
woody posit Leaves opposite or alternate: blades broad. Sepals mostly 4, 
somewhat 
eshy. any 
grouped. Se short. Ovules solitary in 
each cavit 
1. T. expansa Murr. Stem or branches 
spreading or procumbent, 3-14 dm. long: 
leaf-blades ovate to deltoid, 2-6 E long, 
uncat 
uneate at bas 
es pes | green, ovate to hele Mr 
al abou long: nut-like fruit 8—12 
lon pu" horned. — (NEW-ZEALAND 
ERU )? Waste places and fields, Fla. 
and ia Nat. of Asia and Australia.— 
Spr.—fall. 
FaAwiLY 12. PORTULACACEAE — PURSLANE FAMILY 
Herbs, mostly fleshy or succulent, or pal eda woody. Leaves alter- 
nate or opposite: blades entire. Flow perfect, regular. Calyx 
sepals. Corolla of 4 or 5, or rarely more, bis petals, Androecium 
of as many stamens as there are Bs or fewer or Gynoecium of 
3 or more united carpels. Ovary superior or MR, u celled. Fruit a 
capsule or pyxis.—About 40 species, mostly Ameri 
Ovary and capsule superior: capsule 3-valved. 
RO oe stamens more numerous than the sepals, or petals: capsules 
eeded. 1. TALINUM. 
Sepals persicae stamens as many as the sepals, or petals: 
capsules few-seede CLAYTONIA. 
Ovary and capsule wholly or partly inferior: capsule circumscissile. A PORTULACA. 
1. TALINUM Adans. Perennial succulent and sometimes en 
woody herbs, or shrubs, the stem and branches often terminatin g i iry 
peduncles. Leaves terete or flat. Flowers erect. Sepals 2, deciduous. phe 
9 or more, Stamens few or many. Style elongate. Ovules many on a stalked 
placenta.—About 35 species, mostly American. 
Plant herbaceous: leaves crowded on a caudex; blades terete or 
rly so. I. lTERETIFOLIA. 
Plant partly woody: leaves not crowded on a caudex; blades 
broad but succulent. II. LATIFOLIA. 
I. TERETIFOLIA 
Stamens 20 or fewer: style scarcely, if at all exserted beyond 
the stamens: corolla less than 2 em. wide. 1. T. teretifolium. 
Stamens 40 or more: style much exceeding the stamens: corolla 
over 2 cm. wide. . T. Mengesii. 
II. LATIFOLIA 
Plant simple below the inflorescence or nearly so, leafy to about 
the middle, the upper part a naked elongate dichotomously 
compound inflorescence : peduncles terete 3. T. paniculatum. 
Plant much- branched, leafy throughout, he branches and branch- 
lets terminating in corymbiform cymes: peduncles 3-angled. 4. T. triangulare. 
1. T. teretifolium Pursh. Plant 1-3 dm. tall, the stems often tufted, some- 
times branched, copiously leafy: leaves 2-6 cm. long: peduncles slender- -wiry : 
