270 
CHENOFODIACEiE. 
Order LXXX * CHENOPODIACE.®. 
Flowers hermaphrodite or unisexual. Perianth inferior, calyx-like ; 
segments green, equal, free to the base, usually 5. Stamens 1-5, 
hypogynous or perigynous ; anthers 2-celled, dehiscing longitudinally. 
Ovary 1-celled; ovule solitary ; styles 2-4. Fruit an indehiscent 1- 
seeded utricle. Seeds with an embryo coiled round a mass of albumen 
or spiral. — Herbs or shrubs with alternate exstipulate leaves and 
abundant minute green flowers, variously arranged. Distrib. Tem- 
perate regions, both north and south. Species 450. 
* CHEN OPODIUM, Linn. 
Flowers hermaphrodite. Perianth- segments 5, sometimes reduced 
to 3 in some of the flowers of the cluster. Stamens hypogynous or 
nearly so ; filaments subulate. Disk none. Fruit a depresso-globose 
utricle, with a very thin pericarp, enclosed in the closed globose 
perianth. Seed with an embryo forming a ring on the outside of a 
round mass of flowery albumen. — Annual weeds, with alternate leaves, 
stems usually striped green and white, and abundant minute flowers 
in dense clusters. Distrib. Cosmopolitan. Species 50. 
Scent aromatic ; clusters of flowers forming leafy spikes . * C. ambrosioides. 
Scent not aromatic ; clusters of flowers forming leafless cymes. 
Upper leaves lanceolate entire * C. album. 
All the leaves rhomboid and sinuated *0. murale. 
# C. ambrosioides , Linn. ; Moq. in DC. Prod. xiii. 2, 72, a cosmo- 
politan weed, probably of Tropical American origin, is now frequent in 
Mauritius and was gathered by Dr. Balfour in Bodriguez. It is 
covered with minute glandular pubescence and has a strong aromatic 
scent. It has much-branched slender stems 1-3 feet high, lanceolate 
usually sinuated green leaves narrowed to both ends, and the globose 
clusters of flowers are placed on long branchlets and each is bracteated 
by a minute entire oblanceolate leaf. Herbe Pipi. The du Mexique. 
# C. album , Linn.; Moq. in DC. Prod. xiii. 2, 70, the most abundant of 
all the species, originating in the temperate regions of the Old World, 
but now cosmopolitan, is frequent in Mauritius. It has stout much- 
branched erect stems 2 to 5 feet high, rhomboid slightly sinuated more 
or less mealy lower leaves and entire lanceolate upper ones, the clusters 
of flowers forming copious thyrsoid panicles above the leafy part of 
the stem. Ppinard sauvage. 
# C. murale , Linn. ; Moq. in DC. Prod. xiii. 2 69, of north tem- 
perate Old World origin, has been gathered in Mauritius by Belanger, 
Dr. Ayres, and others. It resembles 0 \ album , but differs by its larger 
green leaves, all rhomboid and copiously sinuated, cymes laxer and 
more corymbose and not forming an ample panicle above the leaves. 
