LIX. NYCTAGIN EjE. 
229 
1. PISONIA, Linn. 
Trees or shrubs. Leaves opposite alternate or whorled, exstipulate. 
Flowers in tenninal cymes or corymbs, green or reddish, usually small. — 
FlowerS hermaphrodite or unisexual, with minute bracts at the base. Pe- 
rianth cylindrical-campanulate ; lobes 5, small, plaited. Stamens 6-10, in- 
cluded or exserted, unequal. Ovary elongate ; style lateral or terminal, 
stigma entire lobed or. plumose. Utricle enclosed within the thickened, smooth 
or costate, glabrous aculeate or glandular perianth. 
A considerable genus, of chiefly littoral plants, found in tropical and subtropical parts of 
the world. 
1. P. Brunoniana, Endl. Prodr. Flor. Ins. Norf. 43. — P. Sinclairii, 
FI. N. Z. i. 209. t. 50.. A small tree, 12-15 ft high, glabrous. Leaves 
opposite or 3 in a whorl, 4-12 in. long, broadly oblong, obtuse or acute, 
quite entire, flaccid. Cymes compound, pubescent, 2-4 in. broad. Pe- 
rianth pedicelled, pubescent, A in. long. Stamens 7, included. Style 
terminal, stigma cordate. Perianth of the fruit ribbed, viscid, 1-ly in. 
long. 
Northern Island: east coast, near Ngunguru, Colenso ; Wangarei harbour, Sinclair. 
This, which is also a native of Norfolk Island and Eastern Australia (P. Moorei, Muell.), 
is very near the Pacific island and Javanese P. inermis, Eorst. (P. Forsteriana , Endl. ; P. 
exce/sa, Blume), but the perianth is longer, with shorter lobes, and the stamens are included. 
In De Candolle’s ‘ Prodromus ’ these species and their synonyms are in confusion. 
Order LX. CHENOPODIACEiE. 
Herbs, rarely shrubby, usually flaccid or fleshy. Leaves alternate or 0 ; 
stipules 0. Flowers small, regular, often in small clusters, but very va- 
riously disposed, not rarely unisexual. — Perianth 2- or 4- or 5-lobed or -cleft, 
imbricate, herbaceous, persistent. Stamens 1-5, perigynous, opposite the 
lobes, free or united at the base. Ovary free, 1 -celled ; styles 2-5, stigma 
acute; ovule 1, usually pendent from a basilar cord. Nut or utricle small, 
1-seeded, enclosed in the perianth. Seed orbicular or reniform, flattened, erect 
or horizontal ; embryo terete, coiled round mealy albumen, or spiral and 
without albumen. 
A very large Order, including many saline plants, very difficult of determination. 
Stems leafy, not jointed. 
Perianth ebracteate, 3-5-parted, not altered in fruit. Embryo 
annular 1. Chenopodium. 
Perianth bracteolate, 5-parted, fleshy in fruit. Embryo spiral . . 2. Su/F.da. 
Female fl. enclosed in 2 bracts, which are much enlarged in fruit . 3. Atriplex. 
Perianth bracteate, 5-parted, winged or keeled in fruit. Embryo 
spiral 4. Salsola. 
Stems leafless, cylindrical, jointed. Flowers sunk in the joints . . . 5. Salicornia. 
1. CHENOPODIUM, Linn. 
Herbs, often powdery or glandular. Leaves alternate, rarely opposite, en- 
tire toothed or lobulate. Flowers very small, greenish, in small subglobose 
