230 
LX. CHENOPODIACE7E. 
[Chenopodium. 
fascicles, often subspieate. — Flowers without bracts, hermaphrodite or uni- 
sexual. Perianth 3-5 -parted, not enlarged in fruit. Stamens 1-5. Ovary 
globose or depressed; styles 2 or 3. Utricle depressed or erect. Seed hori- 
zontal or erect ; embryo surrounding mealy albumen. 
A very large, ubiquitous genus, comprising many weeds of waysides, dunghills, and culti- 
vated grounds, several of which are no doubt introduced into New Zealand. 
§ 1. Seed horizontal, rarely vertical in C. glaucum. 
Leaves -J— f in., quite entire, glaucous and pulverulent 1. C. triandrum. 
Leaves 1-li in-, triangular, toothed, not glaucous 2 . C. urbicum. 
Leaves 1-1 in., oblong or deltoid, mealy below 3. C. glaucum. 
Leaves 1-2 in., glandular, aromatic, not glaucous 4. C. ambrosioides, 
§ 2. Seed vertical. ( See glaucum in § 1.) 
Tall, erect. Perianth-segments mnch thickened 5. C. carinatum. 
Small, much-brauched, very slender. Perianth membranous . . . 6. C. pusillum. 
1. C. triandrum. Ford. — FI. N. Z. i. 212. A small, much-branched, 
pulverulent herb, 6-12 in. high; branches very slender. Leaves opposite 
and alternate, -5 — | in. long, with slender petioles, oblong-hastate, truncate cor- 
date or cuneate at the base, rounded at the tip, quite entire. Flowers very 
minute, in axillary spikelets, and fascicled towards the ends of the branches. 
Fruiting perianth open. Stamens 2-4. Seed punctate, adhering to the 
utricle. 
Northern and Middle Islands, from Auckland to Otago, frequent, Banks and Solander , 
etc. Apparently confined to New Zealand. (The plant bearing this name in A. Cunning- 
ham’s Herbarium is Euxolus viridis.) 
2. C. urbicum, Linn.; — FI. N. Z. i. 213. A tall, erect or prostrate, 
coarse, branching, green herb, 2-3 ft. high, quite glabrous, not glaucous nor 
pulverulent ; stems angled. Leaves 1-1|- in. long, with slender petioles, tri- 
angular or subeordate-hastate, margin irregularly notched, crumpled, lobulate. 
Flowers in dense axillary and terminal spikes. Seed punctate ; margins obtuse. 
Northern Island: Tanenuiarangi, Colenso. Middle Island: New River, Hb. A. 
Richard ; Ashburton river and Rangitata range, Haast. A common weed and wayside 
plant in many parts of the world, perhaps not indigenous to New Zealand. 
3. C. glaucum, Linn., var. ambiguum ; — FI. N. Z. i. 213. Pro- 
strate, much-branched, succulent; stems and branches 4-18 in. long, flaccid, 
glabrous. Leaves |-1 in. long, lower petioled, upper sessile, ovate-oblong 
trapezoid or subhastate, quite entire lobulate or coarsely unequally toothed, 
obtuse, pulverulent below. Spikes short, glomerate, axillary. Perianth 3-5- 
parted. Seed erect or horizontal, punctate. — C. ambiguum, Br. 
Northern and Middle Islands: not uncommon on muddy flats, shingle, etc., near th& 
sea, Banks and Solander, etc. A common extratropical plant in the southern and also 
abundant in the northern hemisphere. 
4. C. ambrosioides, Linn. ; — FI. N. Z. i. 213. Tall, erect, branched, 
herbaceous, 1-3 ft. high, glabrous or pubescent, everywhere glandular, very 
aromatic ; stems and branches terete. Leaves 1-2 in. long, ovate- or oblong- 
lanceolate or lanceolate, acuminate, cuneate at the base, shortly petioled, 
coarsely obtusely or acutely toothed and cut. Flowers on short, axillary, spi- 
ciform, leafy branches. Stamens usually 5. Seed horizontal. 
Northern Island : cultivated ground, Colenso, perhaps introduced. Middle Island : 
